diff --git a/res/layout-land/confirm_lock_password.xml b/res/layout-land/confirm_lock_password.xml
index 8d742fa..d140bad 100644
--- a/res/layout-land/confirm_lock_password.xml
+++ b/res/layout-land/confirm_lock_password.xml
@@ -28,7 +28,7 @@
         android:layout_height="match_parent">
 
         <TextView
-            style="@android:style/TextAppearance.Material.Title"
+            style="@*android:style/TextAppearance.DeviceDefault.Title"
             android:id="@+id/headerText"
             android:layout_marginStart="24dp"
             android:layout_marginEnd="24dp"
@@ -38,7 +38,7 @@
             android:textColor="?android:attr/colorAccent"/>
 
         <TextView
-            style="@android:style/TextAppearance.Material.Body1"
+            style="@*android:style/TextAppearance.DeviceDefault.Body1"
             android:id="@+id/detailsText"
             android:layout_marginStart="24dp"
             android:layout_marginEnd="24dp"
diff --git a/res/layout-land/confirm_lock_pattern.xml b/res/layout-land/confirm_lock_pattern.xml
index 0449e59..bcfd907 100644
--- a/res/layout-land/confirm_lock_pattern.xml
+++ b/res/layout-land/confirm_lock_pattern.xml
@@ -37,7 +37,7 @@
             android:orientation="vertical">
 
             <TextView
-                style="@android:style/TextAppearance.Material.Headline"
+                style="@*android:style/TextAppearance.DeviceDefault.Headline"
                 android:id="@+id/headerText"
                 android:layout_marginStart="32dp"
                 android:layout_marginEnd="32dp"
@@ -46,7 +46,7 @@
                 android:textColor="?android:attr/colorAccent"/>
 
             <TextView
-                style="@android:style/TextAppearance.Material.Body1"
+                style="@*android:style/TextAppearance.DeviceDefault.Body1"
                 android:id="@+id/detailsText"
                 android:layout_marginStart="32dp"
                 android:layout_marginEnd="32dp"
@@ -111,4 +111,4 @@
         </LinearLayout>
 
     </com.android.internal.widget.LinearLayoutWithDefaultTouchRecepient>
-</FrameLayout>
\ No newline at end of file
+</FrameLayout>
diff --git a/res/layout-land/storage_summary_donut.xml b/res/layout-land/storage_summary_donut.xml
index 5fe4cc8..f43737a 100644
--- a/res/layout-land/storage_summary_donut.xml
+++ b/res/layout-land/storage_summary_donut.xml
@@ -42,7 +42,7 @@
             android:fontFamily="@*android:string/config_headlineFontFamily"
             android:singleLine="true"
             android:textAlignment="viewStart"
-            android:textAppearance="@android:style/TextAppearance.Material.Display1"
+            android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Display1"
             android:textSize="36sp" />
 
         <TextView
@@ -54,7 +54,7 @@
             android:maxLines="10"
             android:paddingBottom="20dp"
             android:textAlignment="viewStart"
-            android:textAppearance="@android:style/TextAppearance.Material.Body1" />
+            android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Body1" />
 
         <Button
             android:id="@+id/deletion_helper_button"
diff --git a/res/layout-sw300dp-land/font_size_activity.xml b/res/layout-sw300dp-land/font_size_activity.xml
index 69abac1..6664704 100644
--- a/res/layout-sw300dp-land/font_size_activity.xml
+++ b/res/layout-sw300dp-land/font_size_activity.xml
@@ -56,7 +56,7 @@
                 android:layout_height="wrap_content"
                 android:layout_gravity="center_horizontal"
                 android:padding="6dp"
-                android:textAppearance="@android:style/TextAppearance.Material.Widget.TextView"
+                android:textAppearance="@android:style/TextAppearance.DeviceDefault.Widget.TextView"
                 android:elevation="2dp" />
 
             <com.android.settings.widget.LabeledSeekBar
@@ -102,7 +102,7 @@
                 android:layout_height="wrap_content"
                 android:text="@string/font_size_summary"
                 android:layout_marginBottom="16dp"
-                android:textAppearance="@android:style/TextAppearance.Material.Subhead" />
+                android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Subhead" />
         </LinearLayout>
     </ScrollView>
 </LinearLayout>
diff --git a/res/layout-sw300dp-land/screen_zoom_activity.xml b/res/layout-sw300dp-land/screen_zoom_activity.xml
index 8d6e735..cd7c67c 100644
--- a/res/layout-sw300dp-land/screen_zoom_activity.xml
+++ b/res/layout-sw300dp-land/screen_zoom_activity.xml
@@ -56,7 +56,7 @@
                 android:layout_height="wrap_content"
                 android:layout_gravity="center_horizontal"
                 android:padding="6dp"
-                android:textAppearance="@android:style/TextAppearance.Material.Widget.TextView"
+                android:textAppearance="@android:style/TextAppearance.DeviceDefault.Widget.TextView"
                 android:elevation="2dp" />
 
             <com.android.settings.widget.LabeledSeekBar
@@ -102,7 +102,7 @@
                 android:layout_height="wrap_content"
                 android:text="@string/screen_zoom_summary"
                 android:layout_marginBottom="16dp"
-                android:textAppearance="@android:style/TextAppearance.Material.Subhead" />
+                android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Subhead" />
         </LinearLayout>
     </ScrollView>
 </LinearLayout>
diff --git a/res/layout-sw360dp/storage_summary_donut.xml b/res/layout-sw360dp/storage_summary_donut.xml
index 5fe4cc8..f43737a 100644
--- a/res/layout-sw360dp/storage_summary_donut.xml
+++ b/res/layout-sw360dp/storage_summary_donut.xml
@@ -42,7 +42,7 @@
             android:fontFamily="@*android:string/config_headlineFontFamily"
             android:singleLine="true"
             android:textAlignment="viewStart"
-            android:textAppearance="@android:style/TextAppearance.Material.Display1"
+            android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Display1"
             android:textSize="36sp" />
 
         <TextView
@@ -54,7 +54,7 @@
             android:maxLines="10"
             android:paddingBottom="20dp"
             android:textAlignment="viewStart"
-            android:textAppearance="@android:style/TextAppearance.Material.Body1" />
+            android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Body1" />
 
         <Button
             android:id="@+id/deletion_helper_button"
diff --git a/res/layout/admin_support_details_dialog.xml b/res/layout/admin_support_details_dialog.xml
index 922451f..66eaf0d 100644
--- a/res/layout/admin_support_details_dialog.xml
+++ b/res/layout/admin_support_details_dialog.xml
@@ -34,7 +34,7 @@
                 android:layout_height="wrap_content"
                 android:paddingStart="@dimen/admin_details_dialog_padding"
                 android:text="@string/disabled_by_policy_title"
-                android:textAppearance="@android:style/TextAppearance.Material.Title" />
+                android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Title" />
     </LinearLayout>
 
     <ScrollView
@@ -48,7 +48,7 @@
             <TextView android:id="@+id/admin_support_msg"
                       android:layout_width="match_parent"
                       android:layout_height="wrap_content"
-                      android:textAppearance="@android:style/TextAppearance.Material.Subhead"
+                      android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Subhead"
                       android:text="@string/default_admin_support_msg"
                       android:maxLength="200"
                       android:autoLink="email|phone|web"
diff --git a/res/layout/battery_header.xml b/res/layout/battery_header.xml
index 9f5bde9..d6ecafa 100644
--- a/res/layout/battery_header.xml
+++ b/res/layout/battery_header.xml
@@ -40,7 +40,7 @@
             android:layout_height="wrap_content"
             android:layout_marginTop="12dp"
             android:fontFamily="@*android:string/config_headlineFontFamily"
-            android:textAppearance="@android:style/TextAppearance.Material.Display1"/>
+            android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Display1"/>
 
         <TextView
             android:id="@+id/summary1"
@@ -48,13 +48,13 @@
             android:layout_height="wrap_content"
             android:layout_marginTop="8dp"
             android:minLines="2"
-            android:textAppearance="@android:style/TextAppearance.Material.Small"/>
+            android:textAppearance="@android:style/TextAppearance.DeviceDefault.Small"/>
 
         <TextView
             android:id="@+id/summary2"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:textAppearance="@android:style/TextAppearance.Material.Small"/>
+            android:textAppearance="@android:style/TextAppearance.DeviceDefault.Small"/>
 
     </LinearLayout>
 
diff --git a/res/layout/bluetooth_pin_confirm.xml b/res/layout/bluetooth_pin_confirm.xml
index 33140d9..c55c9ff 100644
--- a/res/layout/bluetooth_pin_confirm.xml
+++ b/res/layout/bluetooth_pin_confirm.xml
@@ -40,7 +40,7 @@
             android:gravity="center_vertical"
             android:text="@string/bluetooth_pairing_key_msg"
             android:visibility="gone"
-            android:textAppearance="@android:style/TextAppearance.Material.Body1"
+            android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Body1"
             android:textColor="@color/bluetooth_dialog_text_color"  />
 
         <TextView
@@ -52,7 +52,7 @@
             android:layout_marginBottom="@dimen/bluetooth_dialog_padding"
             android:gravity="center_vertical"
             android:visibility="gone"
-            android:textAppearance="@android:style/TextAppearance.Material.Headline" />
+            android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Headline" />
 
         <TextView
             android:id="@+id/pairing_code_message"
@@ -63,7 +63,7 @@
             android:layout_marginBottom="@dimen/bluetooth_dialog_padding"
             android:gravity="center_vertical"
             android:text="@string/bluetooth_enter_passkey_msg"
-            android:textAppearance="@android:style/TextAppearance.Material.Subhead"
+            android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Subhead"
             android:textColor="@color/bluetooth_dialog_text_color"
             android:visibility="gone" />
 
@@ -73,7 +73,7 @@
             android:layout_height="wrap_content"
             android:layout_marginStart="@dimen/bluetooth_dialog_padding"
             android:layout_marginEnd="@dimen/bluetooth_dialog_padding"
-            android:textAppearance="@android:style/TextAppearance.Material.Body1"
+            android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Body1"
             android:textColor="@color/bluetooth_dialog_text_color"  />
 
     </LinearLayout>
diff --git a/res/layout/bluetooth_pin_entry.xml b/res/layout/bluetooth_pin_entry.xml
index c309a24..0c6861c 100644
--- a/res/layout/bluetooth_pin_entry.xml
+++ b/res/layout/bluetooth_pin_entry.xml
@@ -60,7 +60,7 @@
             android:layout_marginBottom="16dp"
             android:gravity="center"
             android:paddingStart="@dimen/bluetooth_checkbox_padding"
-            android:textAppearance="@android:style/TextAppearance.Material.Body1"
+            android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Body1"
             android:textColor="?android:attr/textColorSecondary"/>
 
         <TextView
@@ -71,7 +71,7 @@
             android:layout_marginEnd="@dimen/bluetooth_pairing_padding"
             android:layout_marginBottom="12dp"
             android:gravity="center_vertical"
-            android:textAppearance="@android:style/TextAppearance.Material.Subhead"
+            android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Subhead"
             android:textColor="?android:attr/textColorSecondary"/>
 
         <CheckBox
@@ -84,7 +84,7 @@
             android:gravity="center_vertical"
             android:paddingStart="@dimen/bluetooth_checkbox_padding"
             android:text="@string/bluetooth_pairing_shares_phonebook"
-            android:textAppearance="@android:style/TextAppearance.Material.Body1"
+            android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Body1"
             android:textColor="?android:attr/textColorSecondary"/>
 
     </LinearLayout>
diff --git a/res/layout/choose_lock_dialog_item.xml b/res/layout/choose_lock_dialog_item.xml
index 46ad539..f87b7c4 100644
--- a/res/layout/choose_lock_dialog_item.xml
+++ b/res/layout/choose_lock_dialog_item.xml
@@ -26,5 +26,5 @@
     android:paddingEnd="?android:attr/listPreferredItemPaddingEnd"
     android:paddingStart="?android:attr/listPreferredItemPaddingStart"
     android:textAlignment="viewStart"
-    android:textAppearance="@android:style/TextAppearance.Material.Subhead"
+    android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Subhead"
     android:textColor="?android:attr/textColorAlertDialogListItem" />
diff --git a/res/layout/confirm_lock_password_base.xml b/res/layout/confirm_lock_password_base.xml
index edc8e25..22934ba 100644
--- a/res/layout/confirm_lock_password_base.xml
+++ b/res/layout/confirm_lock_password_base.xml
@@ -31,7 +31,7 @@
         android:paddingTop="@dimen/confirm_credentials_top_padding">
 
         <TextView
-            style="@android:style/TextAppearance.Material.Headline"
+            style="@*android:style/TextAppearance.DeviceDefault.Headline"
             android:id="@+id/headerText"
             android:layout_marginStart="?attr/confirmDeviceCredentialsSideMargin"
             android:layout_marginEnd="?attr/confirmDeviceCredentialsSideMargin"
@@ -41,7 +41,7 @@
             android:textColor="?android:attr/colorAccent"/>
 
         <TextView
-            style="@android:style/TextAppearance.Material.Body1"
+            style="@*android:style/TextAppearance.DeviceDefault.Body1"
             android:id="@+id/detailsText"
             android:layout_marginStart="?attr/confirmDeviceCredentialsSideMargin"
             android:layout_marginEnd="?attr/confirmDeviceCredentialsSideMargin"
diff --git a/res/layout/confirm_lock_pattern_base.xml b/res/layout/confirm_lock_pattern_base.xml
index 46e2516..25fa08f 100644
--- a/res/layout/confirm_lock_pattern_base.xml
+++ b/res/layout/confirm_lock_pattern_base.xml
@@ -40,7 +40,7 @@
                 android:orientation="vertical">
 
                 <TextView
-                    style="@android:style/TextAppearance.Material.Headline"
+                    style="@*android:style/TextAppearance.DeviceDefault.Headline"
                     android:id="@+id/headerText"
                     android:layout_marginStart="?attr/confirmDeviceCredentialsSideMargin"
                     android:layout_marginEnd="?attr/confirmDeviceCredentialsSideMargin"
@@ -50,7 +50,7 @@
                     android:textColor="?android:attr/colorAccent"/>
 
                 <TextView
-                    style="@android:style/TextAppearance.Material.Body1"
+                    style="@*android:style/TextAppearance.DeviceDefault.Body1"
                     android:id="@+id/detailsText"
                     android:layout_marginStart="?attr/confirmDeviceCredentialsSideMargin"
                     android:layout_marginEnd="?attr/confirmDeviceCredentialsSideMargin"
diff --git a/res/layout/data_usage_detail.xml b/res/layout/data_usage_detail.xml
index 5113139..8079fe1 100644
--- a/res/layout/data_usage_detail.xml
+++ b/res/layout/data_usage_detail.xml
@@ -64,14 +64,14 @@
                     android:singleLine="true"
                     android:ellipsize="marquee"
                     android:text="@string/data_usage_label_foreground"
-                    android:textAppearance="@android:style/TextAppearance.Material.Body1"
+                    android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Body1"
                     android:textColor="?android:attr/textColorSecondary"
                     android:textAlignment="viewStart" />
                 <TextView
                     android:id="@+id/app_foreground"
                     android:layout_width="wrap_content"
                     android:layout_height="wrap_content"
-                    android:textAppearance="@android:style/TextAppearance.Material.Body1"
+                    android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Body1"
                     android:textColor="?android:attr/textColorSecondary"
                     android:textAlignment="viewEnd" />
             </LinearLayout>
@@ -87,14 +87,14 @@
                     android:singleLine="true"
                     android:ellipsize="marquee"
                     android:text="@string/data_usage_label_background"
-                    android:textAppearance="@android:style/TextAppearance.Material.Body1"
+                    android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Body1"
                     android:textColor="?android:attr/textColorSecondary"
                     android:textAlignment="viewStart" />
                 <TextView
                     android:id="@+id/app_background"
                     android:layout_width="wrap_content"
                     android:layout_height="wrap_content"
-                    android:textAppearance="@android:style/TextAppearance.Material.Body1"
+                    android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Body1"
                     android:textColor="?android:attr/textColorSecondary"
                     android:textAlignment="viewEnd" />
             </LinearLayout>
diff --git a/res/layout/font_size_activity.xml b/res/layout/font_size_activity.xml
index aa3930c..3e84336 100644
--- a/res/layout/font_size_activity.xml
+++ b/res/layout/font_size_activity.xml
@@ -48,7 +48,7 @@
                 android:layout_height="wrap_content"
                 android:layout_gravity="center_horizontal"
                 android:padding="6dp"
-                android:textAppearance="@android:style/TextAppearance.Material.Widget.TextView"
+                android:textAppearance="@android:style/TextAppearance.DeviceDefault.Widget.TextView"
                 android:elevation="2dp" />
 
             <LinearLayout
@@ -94,7 +94,7 @@
                 android:layout_height="wrap_content"
                 android:text="@string/font_size_summary"
                 android:layout_marginBottom="16dp"
-                android:textAppearance="@android:style/TextAppearance.Material.Subhead" />
+                android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Subhead" />
         </LinearLayout>
     </LinearLayout>
 </ScrollView>
diff --git a/res/layout/font_size_preview.xml b/res/layout/font_size_preview.xml
index d84bb39..669ece0 100644
--- a/res/layout/font_size_preview.xml
+++ b/res/layout/font_size_preview.xml
@@ -36,25 +36,25 @@
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
                 android:text="@string/font_size_preview_text_headline"
-                android:textAppearance="@android:style/TextAppearance.Material.Headline"/>
+                android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Headline"/>
 
             <TextView
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
                 android:text="@string/font_size_preview_text_title"
-                android:textAppearance="@android:style/TextAppearance.Material.Title"/>
+                android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Title"/>
 
             <TextView
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
                 android:text="@string/font_size_preview_text_subtitle"
-                android:textAppearance="@android:style/TextAppearance.Material.Subhead"/>
+                android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Subhead"/>
 
             <TextView
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
                 android:text="@string/font_size_preview_text_body"
-                android:textAppearance="@android:style/TextAppearance.Material.Body1"/>
+                android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Body1"/>
         </LinearLayout>
     </view>
 </ScrollView>
diff --git a/res/layout/preference.xml b/res/layout/preference.xml
index cf85e5d..195671b 100644
--- a/res/layout/preference.xml
+++ b/res/layout/preference.xml
@@ -35,7 +35,7 @@
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:singleLine="true"
-            android:textAppearance="@android:style/TextAppearance.Material.Subhead"
+            android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Subhead"
             android:textColor="?android:attr/textColorPrimary"
             android:ellipsize="marquee"
             android:fadingEdge="horizontal" />
@@ -48,7 +48,7 @@
             android:layout_alignStart="@android:id/title"
             android:visibility="gone"
             android:textAlignment="viewStart"
-            android:textAppearance="@android:style/TextAppearance.Material.Body1"
+            android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Body1"
             android:textColor="?android:attr/textColorSecondary"
             android:maxLines="10" />
 
diff --git a/res/layout/preference_multiline_title.xml b/res/layout/preference_multiline_title.xml
index 16c25d5..ae93ead 100644
--- a/res/layout/preference_multiline_title.xml
+++ b/res/layout/preference_multiline_title.xml
@@ -34,7 +34,7 @@
             android:id="@android:id/title"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:textAppearance="@android:style/TextAppearance.Material.Subhead"
+            android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Subhead"
             android:textColor="?android:attr/textColorPrimary"
             android:ellipsize="marquee"
             android:fadingEdge="horizontal" />
@@ -47,7 +47,7 @@
             android:layout_alignStart="@android:id/title"
             android:visibility="gone"
             android:textAlignment="viewStart"
-            android:textAppearance="@android:style/TextAppearance.Material.Body1"
+            android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Body1"
             android:textColor="?android:attr/textColorSecondary"
             android:maxLines="10" />
 
diff --git a/res/layout/preference_progress_category.xml b/res/layout/preference_progress_category.xml
index 2ac3dc1..91a0312 100644
--- a/res/layout/preference_progress_category.xml
+++ b/res/layout/preference_progress_category.xml
@@ -46,7 +46,7 @@
         android:layout_height="wrap_content"
         android:layout_weight="1"
         android:layout_gravity="start|center"
-        android:textAppearance="@android:style/TextAppearance.Material.Body2"
+        android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Body2"
         android:textColor="?android:attr/colorAccent"/>
 
     <ProgressBar
diff --git a/res/layout/preference_volume_slider.xml b/res/layout/preference_volume_slider.xml
index da3a028..34c732d 100644
--- a/res/layout/preference_volume_slider.xml
+++ b/res/layout/preference_volume_slider.xml
@@ -58,7 +58,7 @@
                 android:layout_weight="1"
                 android:paddingStart="12dp"
                 android:singleLine="true"
-                android:textAppearance="@android:style/TextAppearance.Material.Subhead"
+                android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Subhead"
                 android:textColor="?android:attr/textColorPrimary"
                 android:ellipsize="marquee"
                 android:fadingEdge="horizontal"/>
@@ -94,7 +94,7 @@
                 android:singleLine="true"
                 android:ellipsize="end"
                 android:visibility="gone"
-                android:textAppearance="@android:style/TextAppearance.Material.Body1"
+                android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Body1"
                 android:textColor="?android:attr/textColorSecondary"/>
 
         </LinearLayout>
diff --git a/res/layout/preference_widget_seekbar_settings.xml b/res/layout/preference_widget_seekbar_settings.xml
index fb1e9c8..9893a1b 100644
--- a/res/layout/preference_widget_seekbar_settings.xml
+++ b/res/layout/preference_widget_seekbar_settings.xml
@@ -35,7 +35,7 @@
         android:paddingStart="56dp"
         android:paddingEnd="8dp"
         android:singleLine="true"
-        android:textAppearance="@android:style/TextAppearance.Material.Subhead"
+        android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Subhead"
         android:textColor="?android:attr/textColorPrimary" />
 
     <TextView
diff --git a/res/layout/preset_picker_item.xml b/res/layout/preset_picker_item.xml
index 405b735..47887e1 100644
--- a/res/layout/preset_picker_item.xml
+++ b/res/layout/preset_picker_item.xml
@@ -44,6 +44,6 @@
         android:maxLines="2"
         android:minLines="2"
         android:gravity="top|center_horizontal"
-        android:textAppearance="@android:style/TextAppearance.Material.Body1" />
+        android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Body1" />
 
 </LinearLayout>
diff --git a/res/layout/preview_seek_bar_view_pager.xml b/res/layout/preview_seek_bar_view_pager.xml
index 264991a..12f2611 100644
--- a/res/layout/preview_seek_bar_view_pager.xml
+++ b/res/layout/preview_seek_bar_view_pager.xml
@@ -36,7 +36,7 @@
         android:paddingStart="32dp"
         android:gravity="start|center"
         android:text="@string/screen_zoom_preview_title"
-        android:textAppearance="@android:style/TextAppearance.Material.Widget.ActionBar.Title"
+        android:textAppearance="@android:style/TextAppearance.DeviceDefault.Widget.ActionBar.Title"
         android:importantForAccessibility="no" />
 </LinearLayout>
 
diff --git a/res/layout/running_processes_header.xml b/res/layout/running_processes_header.xml
index a696b38..b2db025 100644
--- a/res/layout/running_processes_header.xml
+++ b/res/layout/running_processes_header.xml
@@ -30,7 +30,7 @@
         android:layout_height="48dp"
         android:singleLine="true"
         android:ellipsize="marquee"
-        android:textAppearance="@android:style/TextAppearance.Material.Body2"
+        android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Body2"
         android:textColor="?android:attr/textColorPrimary"
         android:textAlignment="viewStart"
         android:gravity="left|center_vertical"
@@ -63,7 +63,7 @@
             <TextView
                 android:id="@+id/systemSizePrefix"
                 android:text="@string/running_processes_header_system_prefix"
-                android:textAppearance="@android:style/TextAppearance.Material.Body1"
+                android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Body1"
                 android:textColor="?android:attr/textColorSecondary"
                 android:layout_height="wrap_content"
                 android:layout_width="wrap_content"
@@ -81,7 +81,7 @@
                 android:contentDescription="@null" />
             <TextView
                 android:id="@+id/systemSize"
-                android:textAppearance="@android:style/TextAppearance.Material.Body1"
+                android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Body1"
                 android:textColor="?android:attr/textColorSecondary"
                 android:layout_height="wrap_content"
                 android:layout_width="wrap_content"
@@ -108,7 +108,7 @@
             <TextView
                 android:id="@+id/appsSizePrefix"
                 android:text="@string/running_processes_header_apps_prefix"
-                android:textAppearance="@android:style/TextAppearance.Material.Body1"
+                android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Body1"
                 android:textColor="?android:attr/textColorSecondary"
                 android:layout_height="wrap_content"
                 android:layout_width="wrap_content"
@@ -126,7 +126,7 @@
                 android:contentDescription="@null" />
             <TextView
                 android:id="@+id/appsSize"
-                android:textAppearance="@android:style/TextAppearance.Material.Body1"
+                android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Body1"
                 android:textColor="?android:attr/textColorSecondary"
                 android:layout_height="wrap_content"
                 android:layout_width="wrap_content"
@@ -153,7 +153,7 @@
             <TextView
                 android:id="@+id/freeSizePrefix"
                 android:text="@string/running_processes_header_free_prefix"
-                android:textAppearance="@android:style/TextAppearance.Material.Body1"
+                android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Body1"
                 android:textColor="?android:attr/textColorSecondary"
                 android:layout_height="wrap_content"
                 android:layout_width="wrap_content"
@@ -171,7 +171,7 @@
                 android:contentDescription="@null" />
             <TextView
                 android:id="@+id/freeSize"
-                android:textAppearance="@android:style/TextAppearance.Material.Body1"
+                android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Body1"
                 android:textColor="?android:attr/textColorSecondary"
                 android:layout_height="wrap_content"
                 android:layout_width="wrap_content"
@@ -186,7 +186,7 @@
         android:layout_marginTop="8dp"
         android:singleLine="true"
         android:ellipsize="marquee"
-        android:textAppearance="@android:style/TextAppearance.Material.Body2"
+        android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Body2"
         android:textColor="?android:attr/textColorPrimary"
         android:textAlignment="viewStart"
         android:gravity="left|center_vertical"
diff --git a/res/layout/running_processes_item.xml b/res/layout/running_processes_item.xml
index 036a90e..45121eb 100644
--- a/res/layout/running_processes_item.xml
+++ b/res/layout/running_processes_item.xml
@@ -48,7 +48,7 @@
             android:layout_weight="1"
             android:singleLine="true"
             android:ellipsize="marquee"
-            android:textAppearance="@android:style/TextAppearance.Material.Subhead"
+            android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Subhead"
             android:textAlignment="viewStart" />
 
         <TextView
@@ -56,7 +56,7 @@
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_marginStart="8dip"
-            android:textAppearance="@android:style/TextAppearance.Material.Body1"
+            android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Body1"
             android:textColor="?android:attr/textColorSecondary" />
 
     </LinearLayout>
@@ -70,7 +70,7 @@
             android:layout_width="0dip"
             android:layout_height="wrap_content"
             android:layout_weight="1"
-            android:textAppearance="@android:style/TextAppearance.Material.Body1"
+            android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Body1"
             android:textColor="?android:attr/textColorSecondary"
             android:textAlignment="viewStart" />
 
@@ -79,7 +79,7 @@
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_marginStart="8dip"
-            android:textAppearance="@android:style/TextAppearance.Material.Body1"
+            android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Body1"
             android:textColor="?android:attr/textColorSecondary" />
 
     </LinearLayout>
diff --git a/res/layout/screen_zoom_activity.xml b/res/layout/screen_zoom_activity.xml
index 0141019..4cfa7b6 100644
--- a/res/layout/screen_zoom_activity.xml
+++ b/res/layout/screen_zoom_activity.xml
@@ -48,7 +48,7 @@
                 android:layout_height="wrap_content"
                 android:layout_gravity="center_horizontal"
                 android:padding="6dp"
-                android:textAppearance="@android:style/TextAppearance.Material.Widget.TextView"
+                android:textAppearance="@android:style/TextAppearance.DeviceDefault.Widget.TextView"
                 android:elevation="2dp" />
 
             <LinearLayout
@@ -93,7 +93,7 @@
                 android:layout_height="wrap_content"
                 android:text="@string/screen_zoom_summary"
                 android:layout_marginBottom="16dp"
-                android:textAppearance="@android:style/TextAppearance.Material.Subhead" />
+                android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Subhead" />
         </LinearLayout>
     </LinearLayout>
 </ScrollView>
diff --git a/res/layout/screen_zoom_preview_app_icon.xml b/res/layout/screen_zoom_preview_app_icon.xml
index 087afb8..1d56410 100644
--- a/res/layout/screen_zoom_preview_app_icon.xml
+++ b/res/layout/screen_zoom_preview_app_icon.xml
@@ -37,5 +37,5 @@
         android:ellipsize="end"
         android:gravity="center_horizontal|top"
         android:singleLine="true"
-        android:textAppearance="@android:style/TextAppearance.Material.Caption" />
-</LinearLayout>
\ No newline at end of file
+        android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Caption" />
+</LinearLayout>
diff --git a/res/layout/screen_zoom_preview_settings.xml b/res/layout/screen_zoom_preview_settings.xml
index 9a0cc59..3401fcf 100644
--- a/res/layout/screen_zoom_preview_settings.xml
+++ b/res/layout/screen_zoom_preview_settings.xml
@@ -57,7 +57,7 @@
                         android:layout_width="wrap_content"
                         android:layout_height="wrap_content"
                         android:text="@string/wifi_settings"
-                        android:textAppearance="@android:style/TextAppearance.Material.Subhead"
+                        android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Subhead"
                         android:textColor="?android:attr/textColorPrimary" />
 
 
@@ -65,7 +65,7 @@
                         android:layout_width="wrap_content"
                         android:layout_height="wrap_content"
                         android:text="@string/wifi_display_status_not_available"
-                        android:textAppearance="@android:style/TextAppearance.Material.Body1"
+                        android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Body1"
                         android:textColor="?android:attr/textColorSecondary" />
                 </LinearLayout>
             </LinearLayout>
@@ -96,14 +96,14 @@
                         android:layout_width="wrap_content"
                         android:layout_height="wrap_content"
                         android:text="@string/data_usage_summary_title"
-                        android:textAppearance="@android:style/TextAppearance.Material.Subhead"
+                        android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Subhead"
                         android:textColor="?android:attr/textColorPrimary" />
 
                     <TextView
                         android:layout_width="wrap_content"
                         android:layout_height="wrap_content"
                         android:text="@string/no_data_usage"
-                        android:textAppearance="@android:style/TextAppearance.Material.Body1"
+                        android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Body1"
                         android:textColor="?android:attr/textColorSecondary" />
                 </LinearLayout>
             </LinearLayout>
@@ -134,14 +134,14 @@
                         android:layout_width="wrap_content"
                         android:layout_height="wrap_content"
                         android:text="@string/display_settings_title"
-                        android:textAppearance="@android:style/TextAppearance.Material.Subhead"
+                        android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Subhead"
                         android:textColor="?android:attr/textColorPrimary" />
 
                     <TextView
                         android:layout_width="wrap_content"
                         android:layout_height="wrap_content"
                         android:text="@string/display_summary_example"
-                        android:textAppearance="@android:style/TextAppearance.Material.Body1"
+                        android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Body1"
                         android:textColor="?android:attr/textColorSecondary" />
                 </LinearLayout>
             </LinearLayout>
@@ -172,14 +172,14 @@
                         android:layout_width="wrap_content"
                         android:layout_height="wrap_content"
                         android:text="@string/sound_settings"
-                        android:textAppearance="@android:style/TextAppearance.Material.Subhead"
+                        android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Subhead"
                         android:textColor="?android:attr/textColorPrimary" />
 
                     <TextView
                         android:layout_width="wrap_content"
                         android:layout_height="wrap_content"
                         android:text="@string/sound_settings_example_summary"
-                        android:textAppearance="@android:style/TextAppearance.Material.Body1"
+                        android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Body1"
                         android:textColor="?android:attr/textColorSecondary" />
                 </LinearLayout>
             </LinearLayout>
@@ -210,14 +210,14 @@
                         android:layout_width="wrap_content"
                         android:layout_height="wrap_content"
                         android:text="@string/applications_settings"
-                        android:textAppearance="@android:style/TextAppearance.Material.Subhead"
+                        android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Subhead"
                         android:textColor="?android:attr/textColorPrimary" />
 
                     <TextView
                         android:layout_width="wrap_content"
                         android:layout_height="wrap_content"
                         android:text="@string/apps_summary_example"
-                        android:textAppearance="@android:style/TextAppearance.Material.Body1"
+                        android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Body1"
                         android:textColor="?android:attr/textColorSecondary" />
                 </LinearLayout>
             </LinearLayout>
diff --git a/res/layout/settings_summary_preference.xml b/res/layout/settings_summary_preference.xml
index ae3b70d..e76190f 100644
--- a/res/layout/settings_summary_preference.xml
+++ b/res/layout/settings_summary_preference.xml
@@ -31,7 +31,7 @@
         android:fontFamily="@*android:string/config_headlineFontFamily"
         android:paddingTop="0dp"
         android:textColor="?android:attr/colorAccent"
-        android:textAppearance="@android:style/TextAppearance.Material.Display1"
+        android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Display1"
         />
 
     <TextView android:id="@android:id/summary"
diff --git a/res/layout/storage_internal_forget.xml b/res/layout/storage_internal_forget.xml
index cb47d3b..5ff232a 100644
--- a/res/layout/storage_internal_forget.xml
+++ b/res/layout/storage_internal_forget.xml
@@ -33,7 +33,7 @@
             android:paddingStart="@dimen/suw_layout_margin_sides"
             android:paddingEnd="@dimen/suw_layout_margin_sides"
             android:lineSpacingExtra="@dimen/suw_description_line_spacing_extra"
-            android:textAppearance="@android:style/TextAppearance.Material.Body1"
+            android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Body1"
             android:textColor="?android:attr/textColorPrimary" />
     </ScrollView>
 
diff --git a/res/layout/storage_internal_format.xml b/res/layout/storage_internal_format.xml
index 8aec28f..500592f 100644
--- a/res/layout/storage_internal_format.xml
+++ b/res/layout/storage_internal_format.xml
@@ -33,7 +33,7 @@
             android:paddingStart="@dimen/suw_layout_margin_sides"
             android:paddingEnd="@dimen/suw_layout_margin_sides"
             android:lineSpacingExtra="@dimen/suw_description_line_spacing_extra"
-            android:textAppearance="@android:style/TextAppearance.Material.Body1"
+            android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Body1"
             android:textColor="?android:attr/textColorPrimary" />
     </ScrollView>
 
diff --git a/res/layout/storage_internal_unmount.xml b/res/layout/storage_internal_unmount.xml
index 7e728c8..2e394df 100644
--- a/res/layout/storage_internal_unmount.xml
+++ b/res/layout/storage_internal_unmount.xml
@@ -33,7 +33,7 @@
             android:paddingStart="@dimen/suw_layout_margin_sides"
             android:paddingEnd="@dimen/suw_layout_margin_sides"
             android:lineSpacingExtra="@dimen/suw_description_line_spacing_extra"
-            android:textAppearance="@android:style/TextAppearance.Material.Body1"
+            android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Body1"
             android:textColor="?android:attr/textColorPrimary" />
     </ScrollView>
 
diff --git a/res/layout/storage_item.xml b/res/layout/storage_item.xml
index aa2b4f8..cefb399 100644
--- a/res/layout/storage_item.xml
+++ b/res/layout/storage_item.xml
@@ -61,7 +61,7 @@
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
                 android:singleLine="true"
-                android:textAppearance="@android:style/TextAppearance.Material.Subhead"
+                android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Subhead"
                 android:textAlignment="viewStart"
                 android:ellipsize="marquee"
                 android:fadingEdge="horizontal" />
@@ -71,7 +71,7 @@
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
                 android:textAlignment="viewStart"
-                android:textAppearance="@android:style/TextAppearance.Material.Body1"
+                android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Body1"
                 android:textColor="?android:attr/textColorSecondary"
                 android:maxLines="10"
                 android:layout_alignParentEnd="true"/>
diff --git a/res/layout/storage_summary.xml b/res/layout/storage_summary.xml
index d48d62d..ce03b54 100644
--- a/res/layout/storage_summary.xml
+++ b/res/layout/storage_summary.xml
@@ -35,7 +35,7 @@
         android:fontFamily="@*android:string/config_headlineFontFamily"
         android:singleLine="true"
         android:textAlignment="viewStart"
-        android:textAppearance="@android:style/TextAppearance.Material.Subhead"
+        android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Subhead"
         android:textColor="?android:attr/colorAccent"
         android:textSize="36sp"/>
 
@@ -44,7 +44,7 @@
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:textAlignment="viewStart"
-        android:textAppearance="@android:style/TextAppearance.Material.Body1"
+        android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Body1"
         android:maxLines="10" />
 
     <ProgressBar
diff --git a/res/layout/storage_summary_donut.xml b/res/layout/storage_summary_donut.xml
index 7a10fe7..1637189 100644
--- a/res/layout/storage_summary_donut.xml
+++ b/res/layout/storage_summary_donut.xml
@@ -32,7 +32,7 @@
         android:fontFamily="@*android:string/config_headlineFontFamily"
         android:singleLine="true"
         android:textAlignment="center"
-        android:textAppearance="@android:style/TextAppearance.Material.Display1"
+        android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Display1"
         android:textSize="36sp" />
 
     <TextView
@@ -43,7 +43,7 @@
         android:layout_marginEnd="4dp"
         android:maxLines="10"
         android:textAlignment="center"
-        android:textAppearance="@android:style/TextAppearance.Material.Body1" />
+        android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Body1" />
 
     <com.android.settings.widget.DonutView
         android:id="@+id/donut"
diff --git a/res/layout/storage_wizard_init.xml b/res/layout/storage_wizard_init.xml
index 73af8da..bca2676 100644
--- a/res/layout/storage_wizard_init.xml
+++ b/res/layout/storage_wizard_init.xml
@@ -48,7 +48,7 @@
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content"
                     android:layout_marginBottom="@dimen/suw_description_margin_bottom"
-                    android:textAppearance="@android:style/TextAppearance.Material.Subhead"
+                    android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Subhead"
                     android:text="@string/storage_wizard_init_v2_internal_title" />
                 <TextView
                     android:layout_width="match_parent"
@@ -115,7 +115,7 @@
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content"
                     android:layout_marginBottom="@dimen/suw_description_margin_bottom"
-                    android:textAppearance="@android:style/TextAppearance.Material.Subhead"
+                    android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Subhead"
                     android:text="@string/storage_wizard_init_v2_external_title" />
                 <TextView
                     android:layout_width="match_parent"
diff --git a/res/layout/tall_preference_category.xml b/res/layout/tall_preference_category.xml
index f0630f8..7eefdab 100644
--- a/res/layout/tall_preference_category.xml
+++ b/res/layout/tall_preference_category.xml
@@ -21,7 +21,7 @@
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
     android:layout_marginBottom="16dip"
-    android:textAppearance="@android:style/TextAppearance.Material.Body2"
+    android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Body2"
     android:textColor="?android:attr/colorAccent"
     android:paddingStart="?android:attr/listPreferredItemPaddingStart"
     android:paddingEnd="?android:attr/listPreferredItemPaddingEnd"
diff --git a/res/layout/text_description_preference.xml b/res/layout/text_description_preference.xml
index 6b8594b..70385aa 100644
--- a/res/layout/text_description_preference.xml
+++ b/res/layout/text_description_preference.xml
@@ -18,5 +18,5 @@
     android:id="@android:id/summary"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
-    android:textAppearance="@android:style/TextAppearance.Material.Body1"
+    android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Body1"
     android:padding="16dip" />
diff --git a/res/layout/widget_text_views.xml b/res/layout/widget_text_views.xml
index d95599d..9f0506e 100644
--- a/res/layout/widget_text_views.xml
+++ b/res/layout/widget_text_views.xml
@@ -26,7 +26,7 @@
         android:layout_height="wrap_content"
         android:layout_weight="1"
         android:layout_gravity="fill_horizontal|top"
-        android:textAppearance="@android:style/TextAppearance.Material.Body1"
+        android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Body1"
         android:textColor="?android:attr/textColorSecondary"
         android:textAlignment="viewStart"
         android:singleLine="true"
@@ -40,7 +40,7 @@
         android:layout_weight="1"
         android:layout_marginStart="8dip"
         android:layout_gravity="fill_horizontal|top"
-        android:textAppearance="@android:style/TextAppearance.Material.Body1"
+        android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Body1"
         android:textColor="?android:attr/textColorSecondary"
         android:textAlignment="viewEnd"
         android:singleLine="true"
diff --git a/res/layout/zen_onboarding.xml b/res/layout/zen_onboarding.xml
index 35b992d..27922c6 100644
--- a/res/layout/zen_onboarding.xml
+++ b/res/layout/zen_onboarding.xml
@@ -32,7 +32,7 @@
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:text="@string/zen_onboarding_dnd_visual_disturbances_header"
-            android:textAppearance="@android:style/TextAppearance.Material.DialogWindowTitle" />
+            android:textAppearance="@android:style/TextAppearance.DeviceDefault.DialogWindowTitle" />
 
         <LinearLayout
             android:id="@+id/zen_onboarding_new_setting"
diff --git a/res/layout/zen_rule_type.xml b/res/layout/zen_rule_type.xml
index dea39ed..bd50273 100644
--- a/res/layout/zen_rule_type.xml
+++ b/res/layout/zen_rule_type.xml
@@ -42,7 +42,7 @@
                   android:singleLine="true"
                   android:textSize="16sp"
                   android:ellipsize="marquee"
-                  android:textAppearance="@android:style/TextAppearance.Material.Body1"
+                  android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Body1"
                   android:fadingEdge="horizontal" />
 
         <TextView android:id="@+id/subtitle"
@@ -52,7 +52,7 @@
                   android:layout_alignStart="@id/title"
                   android:textSize="14sp"
                   android:textColor="?android:attr/textColorSecondary"
-                  android:textAppearance="@android:style/TextAppearance.Material.Subhead"
+                  android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Subhead"
                   android:maxLines="2"
                   android:visibility="gone" />
 
diff --git a/res/layout/zen_rule_widget.xml b/res/layout/zen_rule_widget.xml
index c6214e7..3d75469 100644
--- a/res/layout/zen_rule_widget.xml
+++ b/res/layout/zen_rule_widget.xml
@@ -19,14 +19,7 @@
         android:layout_width="wrap_content"
         android:layout_height="match_parent"
         android:orientation="horizontal">
-    <ImageView
-            android:id="@+id/zen_automatic_rule_widget"
-            android:layout_width="wrap_content"
-            android:layout_height="fill_parent"
-            android:paddingStart="16dip"
-            android:paddingEnd="16dip"
-            android:src="@drawable/ic_settings"
-            android:contentDescription="zen_mode_rule_settings"
-            android:layout_gravity="center"
-            android:background="?android:attr/selectableItemBackground" />
+
+    <include layout="@layout/preference_widget_gear"
+             android:id="@+id/zen_automatic_rule_widget" />
 </LinearLayout>
diff --git a/res/values/styles.xml b/res/values/styles.xml
index 9a72ff5..98b6283 100644
--- a/res/values/styles.xml
+++ b/res/values/styles.xml
@@ -121,7 +121,7 @@
         <item name="android:paddingStart">8dip</item>
         <item name="android:textSize">14sp</item>
         <item name="android:textAlignment">viewStart</item>
-        <item name="android:textAppearance">@android:style/TextAppearance.Material.Body1</item>
+        <item name="android:textAppearance">@*android:style/TextAppearance.DeviceDefault.Body1</item>
         <item name="android:textColor">?android:attr/textColorSecondary</item>
     </style>
 
@@ -129,13 +129,13 @@
         <item name="android:paddingStart">8dip</item>
         <item name="android:textSize">12sp</item>
         <item name="android:textAlignment">viewStart</item>
-        <item name="android:textAppearance">@android:style/TextAppearance.Material.Body1</item>
+        <item name="android:textAppearance">@*android:style/TextAppearance.DeviceDefault.Body1</item>
         <item name="android:textColor">?android:attr/colorError</item>
     </style>
 
     <style name="wifi_item_content">
         <item name="android:textAlignment">viewStart</item>
-        <item name="android:textAppearance">@android:style/TextAppearance.Material.Subhead</item>
+        <item name="android:textAppearance">@*android:style/TextAppearance.DeviceDefault.Subhead</item>
         <item name="android:textColor">?android:attr/textColorPrimary</item>
         <item name="android:minHeight">@dimen/min_tap_target_size</item>
     </style>
@@ -189,13 +189,13 @@
     <style name="vpn_label">
         <item name="android:layout_width">match_parent</item>
         <item name="android:layout_height">wrap_content</item>
-        <item name="android:textAppearance">?android:attr/textAppearanceSmall</item>
+        <item name="android:textAppearance">@android:style/TextAppearance.DeviceDefault.Small</item>
     </style>
 
     <style name="vpn_value">
         <item name="android:layout_width">match_parent</item>
         <item name="android:layout_height">wrap_content</item>
-        <item name="android:textAppearance">?android:attr/textAppearanceMedium</item>
+        <item name="android:textAppearance">@android:style/TextAppearance.DeviceDefault.Medium</item>
         <item name="android:singleLine">true</item>
         <item name="android:textAlignment">viewStart</item>
         <item name="android:minHeight">@dimen/min_tap_target_size</item>
@@ -205,10 +205,10 @@
         <item name="android:layout_width">match_parent</item>
         <item name="android:layout_height">wrap_content</item>
         <item name="android:paddingStart">8dip</item>
-        <item name="android:textAppearance">?android:attr/textAppearanceSmall</item>
+        <item name="android:textAppearance">@android:style/TextAppearance.DeviceDefault.Small</item>
     </style>
 
-    <style name="TextAppearance" parent="android:TextAppearance.Material"/>
+    <style name="TextAppearance" parent="android:TextAppearance.DeviceDefault"/>
 
     <style name="TextAppearance.info_label">
         <item name="android:textSize">14sp</item>
@@ -225,14 +225,14 @@
         <item name="android:textStyle">normal</item>
     </style>
 
-    <style name="TextAppearance.PasswordEntry" parent="android:TextAppearance.Material">
+    <style name="TextAppearance.PasswordEntry" parent="android:TextAppearance.DeviceDefault">
         <item name="android:gravity">center</item>
         <item name="android:singleLine">true</item>
         <item name="android:textColor">?android:attr/textColorPrimary</item>
         <item name="android:textSize">24sp</item>
     </style>
 
-    <style name="TextAppearance.CryptKeeper_PasswordEntry" parent="android:TextAppearance.Material">
+    <style name="TextAppearance.CryptKeeper_PasswordEntry" parent="android:TextAppearance.DeviceDefault">
         <item name="android:gravity">center_horizontal</item>
         <item name="android:background">@null</item>
         <item name="android:textCursorDrawable">@null</item>
@@ -240,22 +240,22 @@
         <item name="android:imeOptions">flagForceAscii|actionDone</item>
     </style>
 
-    <style name="TextAppearance.Medium" parent="@android:style/TextAppearance.Material.Medium"/>
-    <style name="TextAppearance.Small" parent="@android:style/TextAppearance.Material.Small"/>
+    <style name="TextAppearance.Medium" parent="@android:style/TextAppearance.DeviceDefault.Medium"/>
+    <style name="TextAppearance.Small" parent="@android:style/TextAppearance.DeviceDefault.Small"/>
     <style name="TextAppearance.Switch"
            parent="@android:style/TextAppearance.DeviceDefault.Widget.ActionBar.Title">
         <item name="android:textSize">16sp</item>
     </style>
 
     <style name="TextAppearance.CategoryTitle"
-           parent="@android:style/TextAppearance.Material.Body2">
+           parent="@*android:style/TextAppearance.DeviceDefault.Body2">
         <item name="android:textColor">?android:attr/textColorSecondary</item>
     </style>
 
-    <style name="TextAppearance.TileTitle" parent="@android:style/TextAppearance.Material.Subhead"/>
+    <style name="TextAppearance.TileTitle" parent="@*android:style/TextAppearance.DeviceDefault.Subhead"/>
 
     <style name="TextAppearance.SuggestionTitle"
-           parent="@android:style/TextAppearance.Material.Subhead">
+           parent="@*android:style/TextAppearance.DeviceDefault.Subhead">
         <item name="android:textSize">16sp</item>
     </style>
 
@@ -264,7 +264,7 @@
     </style>
 
     <style name="TextAppearance.ErrorText"
-           parent="android:TextAppearance.Material.Body1">
+           parent="@*android:TextAppearance.DeviceDefault.Body1">
         <item name="android:textColor">?android:attr/colorError</item>
     </style>
 
@@ -274,29 +274,29 @@
     </style>
 
     <style name="TextAppearance.RemoveDialogContent"
-           parent="@android:style/TextAppearance.Material">
+           parent="@android:style/TextAppearance.DeviceDefault">
         <item name="android:textSize">16sp</item>
         <item name="android:textColor">?android:attr/textColorPrimary</item>
     </style>
 
     <style name="TextAppearance.SearchBar"
-           parent="@android:style/TextAppearance.Material.Widget.Toolbar.Subtitle">
+           parent="@*android:style/TextAppearance.DeviceDefault.Widget.Toolbar.Subtitle">
         <item name="android:textSize">@dimen/search_bar_text_size</item>
     </style>
 
     <style name="TextAppearance.SuggestionHeader"
-           parent="@android:style/TextAppearance.Material.Subhead">
+           parent="@*android:style/TextAppearance.DeviceDefault.Subhead">
         <item name="android:textSize">14sp</item>
         <item name="android:textColor">?android:attr/colorAccent</item>
     </style>
 
     <style name="TextAppearance.ConditionCardTitle"
-           parent="@android:style/TextAppearance.Material.Body2">
+           parent="@*android:style/TextAppearance.DeviceDefault.Body2">
         <item name="android:textSize">16sp</item>
     </style>
 
     <style name="TextAppearance.ConditionCardSummary"
-           parent="@android:style/TextAppearance.Material.Body1">
+           parent="@*android:style/TextAppearance.DeviceDefault.Body1">
         <item name="android:textColor">?android:attr/textColorSecondary</item>
     </style>
 
@@ -311,7 +311,7 @@
     </style>
 
     <style name="TextAppearance.ContextualCardDismissalText"
-           parent="@android:style/TextAppearance.Material.Body1">
+           parent="@*android:style/TextAppearance.DeviceDefault.Body1">
         <item name="android:fontFamily">@*android:string/config_headlineFontFamilyMedium</item>
         <item name="android:textSize">16sp</item>
     </style>
@@ -350,13 +350,13 @@
         <item name="android:gravity">center_vertical</item>
     </style>
 
-    <style name="FingerprintHeaderStyle" parent="android:style/TextAppearance.Material.Subhead">
+    <style name="FingerprintHeaderStyle" parent="@*android:style/TextAppearance.DeviceDefault.Subhead">
         <item name="android:paddingTop">16dp</item>
         <item name="android:textColor">@color/primary_dark_material_light</item>
         <item name="android:lineSpacingMultiplier">1.2</item>
     </style>
 
-    <style name="FaceHeaderStyle" parent="android:style/TextAppearance.Material.Subhead">
+    <style name="FaceHeaderStyle" parent="@*android:style/TextAppearance.DeviceDefault.Subhead">
         <item name="android:paddingTop">16dp</item>
         <item name="android:textColor">@color/primary_dark_material_light</item>
         <item name="android:lineSpacingMultiplier">1.2</item>
@@ -411,13 +411,13 @@
 
     <style name="device_info_dialog_label">
         <item name="android:textAlignment">viewStart</item>
-        <item name="android:textAppearance">@android:style/TextAppearance.Material.Body1</item>
+        <item name="android:textAppearance">@*android:style/TextAppearance.DeviceDefault.Body1</item>
         <item name="android:textColor">?android:attr/textColorSecondary</item>
     </style>
 
     <style name="device_info_dialog_value">
         <item name="android:textAlignment">viewStart</item>
-        <item name="android:textAppearance">@android:style/TextAppearance.Material.Body2</item>
+        <item name="android:textAppearance">@*android:style/TextAppearance.DeviceDefault.Body2</item>
         <item name="android:paddingBottom">24dp</item>
     </style>
 
diff --git a/res/values/themes.xml b/res/values/themes.xml
index 6b05a7c..6041ef8 100644
--- a/res/values/themes.xml
+++ b/res/values/themes.xml
@@ -180,7 +180,7 @@
         <item name="android:windowNoTitle">true</item>
     </style>
 
-    <style name="Theme.Settings.HomeBase" parent="Theme.AppCompat.DayNight.NoActionBar">
+    <style name="Theme.Settings.HomeBase" parent="Theme.Settings.NoActionBar">
         <item name="colorPrimary">@*android:color/primary_device_default_settings_light</item>
         <item name="colorAccent">@*android:color/accent_device_default_light</item>
         <item name="preferenceTheme">@style/PreferenceTheme</item>
diff --git a/src/com/android/settings/location/TopLevelLocationPreferenceController.java b/src/com/android/settings/location/TopLevelLocationPreferenceController.java
index d0bd9a9..455af21 100644
--- a/src/com/android/settings/location/TopLevelLocationPreferenceController.java
+++ b/src/com/android/settings/location/TopLevelLocationPreferenceController.java
@@ -1,6 +1,5 @@
 package com.android.settings.location;
 
-import static android.Manifest.permission.ACCESS_BACKGROUND_LOCATION;
 import static android.Manifest.permission.ACCESS_COARSE_LOCATION;
 import static android.Manifest.permission.ACCESS_FINE_LOCATION;
 
@@ -11,6 +10,7 @@
 import android.location.LocationManager;
 import android.permission.RuntimePermissionPresenter;
 
+import androidx.annotation.VisibleForTesting;
 import androidx.preference.Preference;
 
 import com.android.settings.R;
@@ -20,7 +20,6 @@
 import com.android.settingslib.core.lifecycle.events.OnStop;
 
 import java.util.Arrays;
-import java.util.Collections;
 
 public class TopLevelLocationPreferenceController extends BasePreferenceController implements
         LifecycleObserver, OnStart, OnStop {
@@ -56,6 +55,12 @@
         }
     }
 
+    @VisibleForTesting
+    void setLocationAppCount(int numApps) {
+        mNumTotal = numApps;
+        refreshSummary(mPreference);
+    }
+
     @Override
     public void updateState(Preference preference) {
         super.updateState(preference);
@@ -68,8 +73,7 @@
         RuntimePermissionPresenter.getInstance(mContext).countPermissionApps(
                 Arrays.asList(ACCESS_FINE_LOCATION, ACCESS_COARSE_LOCATION), false, false,
                 (numApps) -> {
-                    mNumTotal = numApps;
-                    refreshSummary(preference);
+                    setLocationAppCount(numApps);
                 }, null);
     }
 
diff --git a/tests/robotests/res/layout/preference.xml b/tests/robotests/res/layout/preference.xml
index 3f73161..7ac733f 100644
--- a/tests/robotests/res/layout/preference.xml
+++ b/tests/robotests/res/layout/preference.xml
@@ -30,7 +30,7 @@
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:singleLine="true"
-        android:textAppearance="@android:style/TextAppearance.Material.Subhead"
+        android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Subhead"
         android:textColor="?android:attr/textColorPrimary"
         android:ellipsize="marquee"
         android:fadingEdge="horizontal" />
@@ -43,7 +43,7 @@
         android:layout_alignStart="@android:id/title"
         android:visibility="gone"
         android:textAlignment="viewStart"
-        android:textAppearance="@android:style/TextAppearance.Material.Body1"
+        android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Body1"
         android:textColor="?android:attr/textColorSecondary"
         android:maxLines="10" />
 
diff --git a/tests/robotests/src/com/android/settings/location/TopLevelLocationPreferenceControllerTest.java b/tests/robotests/src/com/android/settings/location/TopLevelLocationPreferenceControllerTest.java
new file mode 100644
index 0000000..68e7f88
--- /dev/null
+++ b/tests/robotests/src/com/android/settings/location/TopLevelLocationPreferenceControllerTest.java
@@ -0,0 +1,86 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.location;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import android.content.Context;
+import android.location.LocationManager;
+
+import com.android.settings.R;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.RobolectricTestRunner;
+import org.robolectric.RuntimeEnvironment;
+
+@RunWith(RobolectricTestRunner.class)
+public class TopLevelLocationPreferenceControllerTest {
+    private static final String PREFERENCE_KEY = "top_level_location";
+    private Context mContext;
+    private TopLevelLocationPreferenceController mController;
+    private LocationManager mLocationManager;
+
+    @Before
+    public void setUp() {
+        mContext = RuntimeEnvironment.application;
+        mController = new TopLevelLocationPreferenceController(mContext, PREFERENCE_KEY);
+        mLocationManager = (LocationManager) mContext.getSystemService(Context.LOCATION_SERVICE);
+    }
+
+    @Test
+    public void isAvailable_byDefault_shouldReturnTrue() {
+        assertThat(mController.isAvailable()).isTrue();
+    }
+
+    @Test
+    public void getSummary_whenLocationIsOff_shouldReturnStringForOff() {
+        mLocationManager.setLocationEnabledForUser(false, android.os.Process.myUserHandle());
+        assertThat(mController.getSummary()).isEqualTo(
+                mContext.getString(R.string.location_settings_summary_location_off));
+    }
+
+    @Test
+    public void getSummary_whenLocationIsOn_shouldShowLoadingString() {
+        mLocationManager.setLocationEnabledForUser(true, android.os.Process.myUserHandle());
+        assertThat(mController.getSummary()).isEqualTo(
+                mContext.getString(R.string.location_settings_loading_app_permission_stats));
+    }
+
+    @Test
+    public void getSummary_whenLocationAppCountIsOne_shouldShowSingularString() {
+        final int LOCATION_APP_COUNT = 1;
+        mLocationManager.setLocationEnabledForUser(true, android.os.Process.myUserHandle());
+        mController.setLocationAppCount(LOCATION_APP_COUNT);
+        assertThat(mController.getSummary()).isEqualTo(
+                mContext.getResources().getQuantityString(
+                        R.plurals.location_settings_summary_location_on,
+                        LOCATION_APP_COUNT, LOCATION_APP_COUNT));
+    }
+
+    @Test
+    public void getSummary_whenLocationAppCountIsGreaterThanOne_shouldShowPluralString() {
+        final int LOCATION_APP_COUNT = 5;
+        mLocationManager.setLocationEnabledForUser(true, android.os.Process.myUserHandle());
+        mController.setLocationAppCount(LOCATION_APP_COUNT);
+        assertThat(mController.getSummary()).isEqualTo(
+                mContext.getResources().getQuantityString(
+                        R.plurals.location_settings_summary_location_on,
+                        LOCATION_APP_COUNT, LOCATION_APP_COUNT));
+    }
+}
\ No newline at end of file