diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index cd988b0..b09826d 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -209,7 +209,7 @@
 
         <activity android:name="AirplaneModeVoiceActivity"
                 android:label="@string/wireless_networks_settings_title"
-                android:theme="@android:style/Theme.Material.Light.Voice"
+                android:theme="@*android:style/Theme.DeviceDefault.Light.Voice"
                 android:exported="true">
             <intent-filter>
                 <action android:name="android.settings.VOICE_CONTROL_AIRPLANE_MODE" />
@@ -379,7 +379,7 @@
                   android:exported="true"
                   android:permission="android.permission.CONNECTIVITY_INTERNAL"
                   android:taskAffinity=""
-                  android:theme="@*android:style/Theme.Material.Light.Dialog.Alert">
+                  android:theme="@*android:style/Theme.DeviceDefault.Light.Dialog.Alert">
             <intent-filter>
                 <action android:name="android.net.conn.PROMPT_UNVALIDATED" />
                 <category android:name="android.intent.category.DEFAULT" />
@@ -560,7 +560,7 @@
 
         <activity android:name="DateTimeSettingsSetupWizard"
                   android:label="@string/date_and_time"
-                  android:theme="@android:style/Theme.Material.Light.NoActionBar"
+                  android:theme="@android:style/Theme.DeviceDefault.Light.NoActionBar"
                   android:screenOrientation="behind">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
@@ -729,7 +729,7 @@
 
         <activity android:name=".inputmethod.UserDictionaryAddWordActivity"
                   android:label="@string/user_dict_settings_title"
-                  android:theme="@android:style/Theme.Material.Light.Dialog.NoActionBar"
+                  android:theme="@android:style/Theme.DeviceDefault.Light.Dialog.NoActionBar"
                   android:windowSoftInputMode="stateVisible"
                   android:noHistory="true"
                   android:excludeFromRecents="true">
@@ -988,7 +988,7 @@
 
         <activity android:name="SettingsLicenseActivity"
                 android:label="@string/settings_license_activity_title"
-                android:theme="@android:style/Theme.Material.Light.Panel"
+                android:theme="@android:style/Theme.DeviceDefault.Light.Panel"
                 android:configChanges="orientation|screenSize">
             <intent-filter android:priority="1">
                 <action android:name="android.settings.LICENSE" />
@@ -1093,7 +1093,7 @@
         <activity android:name=".fuelgauge.RequestIgnoreBatteryOptimizations"
                 android:label="@string/high_power_apps"
                 android:taskAffinity=""
-                android:theme="@*android:style/Theme.Material.Light.Dialog.Alert">
+                android:theme="@*android:style/Theme.DeviceDefault.Light.Dialog.Alert">
             <intent-filter android:priority="1">
                 <action android:name="android.settings.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS" />
                 <category android:name="android.intent.category.DEFAULT" />
@@ -1211,7 +1211,7 @@
         </activity>
 
         <activity android:name=".notification.ZenModeVoiceActivity"
-                android:theme="@android:style/Theme.Material.Light.Dialog.NoActionBar"
+                android:theme="@android:style/Theme.DeviceDefault.Light.Dialog.NoActionBar"
                 android:label="@string/zen_mode_settings_title">
             <intent-filter>
                 <action android:name="android.settings.VOICE_CONTROL_DO_NOT_DISTURB_MODE" />
@@ -1973,7 +1973,7 @@
         </activity-alias>
 
         <activity android:name=".AppPicker" android:label="@string/select_application"
-                android:theme="@android:style/Theme.Material.Light.Dialog" />
+                android:theme="@android:style/Theme.DeviceDefault.Light.Dialog" />
 
         <!-- Keep compatibility with old shortcuts. -->
         <activity-alias android:name="UsbSettings"
@@ -2023,7 +2023,7 @@
                   android:label="@string/bluetooth_permission_request"
                   android:excludeFromRecents="true"
                   android:permission="android.permission.BLUETOOTH"
-                  android:theme="@*android:style/Theme.Material.Light.Dialog.Alert">
+                  android:theme="@*android:style/Theme.DeviceDefault.Light.Dialog.Alert">
             <intent-filter android:priority="1">
                 <action android:name="android.bluetooth.adapter.action.REQUEST_DISCOVERABLE" />
                 <action android:name="android.bluetooth.adapter.action.REQUEST_ENABLE" />
@@ -2044,14 +2044,14 @@
                   android:excludeFromRecents="true"
                   android:exported="true"
                   android:permission="android.permission.MANAGE_USB"
-                  android:theme="@android:style/Theme.Material.Light.Dialog.NoActionBar">
+                  android:theme="@android:style/Theme.DeviceDefault.Light.Dialog.NoActionBar">
         </activity>
 
         <activity android:name=".RemoteBugreportActivity"
                   android:excludeFromRecents="true"
                   android:exported="true"
                   android:permission="android.permission.DUMP"
-                  android:theme="@android:style/Theme.Material.Light.Dialog.NoActionBar">
+                  android:theme="@android:style/Theme.DeviceDefault.Light.Dialog.NoActionBar">
             <intent-filter>
                 <action android:name="android.settings.SHOW_REMOTE_BUGREPORT_DIALOG" />
                 <category android:name="android.intent.category.DEFAULT" />
@@ -2062,7 +2062,7 @@
                   android:label="@string/bluetooth_pairing_request"
                   android:excludeFromRecents="true"
                   android:permission="android.permission.BLUETOOTH"
-                  android:theme="@*android:style/Theme.Material.Light.Dialog.Alert">
+                  android:theme="@*android:style/Theme.DeviceDefault.Light.Dialog.Alert">
         </activity>
 
         <receiver android:name=".bluetooth.BluetoothPairingRequest">
@@ -2085,7 +2085,7 @@
                   android:label="@string/bluetooth_connection_permission_request"
                   android:excludeFromRecents="true"
                   android:permission="android.permission.BLUETOOTH_ADMIN"
-                  android:theme="@*android:style/Theme.Material.Light.Dialog.Alert">
+                  android:theme="@android:style/Theme.DeviceDefault.Light.Dialog.Alert">
             <intent-filter android:priority="1">
                 <action android:name="android.bluetooth.device.action.CONNECTION_ACCESS_REQUEST" />
                 <action android:name="android.bluetooth.device.action.CONNECTION_ACCESS_CANCEL" />
@@ -2095,7 +2095,7 @@
 
         <activity android:name="ActivityPicker"
                 android:label="@string/activity_picker_label"
-                android:theme="@*android:style/Theme.Material.Light.Dialog.Alert"
+                android:theme="@*android:style/Theme.DeviceDefault.Light.Dialog.Alert"
                 android:finishOnCloseSystemDialogs="true">
             <intent-filter android:priority="1">
                 <action android:name="android.intent.action.PICK_ACTIVITY" />
@@ -2158,7 +2158,7 @@
 
         <!-- TODO: Is this needed? -->
         <activity android:name="BandMode"
-                  android:theme="@android:style/Theme.Material.Light.Dialog.Alert"
+                  android:theme="@android:style/Theme.DeviceDefault.Light.Dialog.Alert"
                   android:process="com.android.phone">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
@@ -2186,7 +2186,7 @@
         <!-- Standard picker for widgets -->
         <activity android:name="AppWidgetPickActivity"
                 android:label="@string/widget_picker_title"
-                android:theme="@*android:style/Theme.Material.Light.Dialog.Alert"
+                android:theme="@*android:style/Theme.DeviceDefault.Light.Dialog.Alert"
                 android:finishOnCloseSystemDialogs="true">
             <intent-filter android:priority="1">
                 <action android:name="android.appwidget.action.APPWIDGET_PICK" />
@@ -2195,7 +2195,7 @@
         </activity>
 
         <activity android:name="AllowBindAppWidgetActivity"
-                android:theme="@*android:style/Theme.Material.Light.Dialog.Alert"
+                android:theme="@*android:style/Theme.DeviceDefault.Light.Dialog.Alert"
                 android:finishOnCloseSystemDialogs="true"
                 android:excludeFromRecents="true">
             <intent-filter android:priority="1">
@@ -2265,7 +2265,7 @@
 
         <activity android:name=".fuelgauge.BatterySaverModeVoiceActivity"
                 android:label="@string/power_usage_summary_title"
-                android:theme="@android:style/Theme.Material.Light.Voice"
+                android:theme="@*android:style/Theme.DeviceDefault.Light.Voice"
                 android:exported="true">
             <intent-filter>
                 <action android:name="android.settings.VOICE_CONTROL_BATTERY_SAVER_MODE" />
@@ -2483,7 +2483,7 @@
         <activity android:name=".nfc.PaymentDefaultDialog"
                   android:label="@string/nfc_payment_set_default_label"
                   android:excludeFromRecents="true"
-                  android:theme="@*android:style/Theme.Material.Light.Dialog.Alert">
+                  android:theme="@android:style/Theme.DeviceDefault.Light.Dialog.Alert">
             <intent-filter android:priority="1">
                 <action android:name="android.nfc.cardemulation.action.ACTION_CHANGE_DEFAULT" />
                 <category android:name="android.intent.category.DEFAULT" />
@@ -2501,7 +2501,7 @@
         <activity android:name=".SmsDefaultDialog"
                   android:label="@string/sms_application_title"
                   android:excludeFromRecents="true"
-                  android:theme="@*android:style/Theme.Material.Light.Dialog.Alert">
+                  android:theme="@android:style/Theme.DeviceDefault.Light.Dialog.Alert">
             <intent-filter android:priority="1">
                 <action android:name="android.provider.Telephony.ACTION_CHANGE_DEFAULT" />
                 <category android:name="android.intent.category.DEFAULT" />
@@ -2511,7 +2511,7 @@
         <activity android:name=".ActiveNetworkScorerDialog"
                   android:label="@string/wifi_assistant_title"
                   android:excludeFromRecents="true"
-                  android:theme="@*android:style/Theme.Material.Light.Dialog.Alert">
+                  android:theme="@android:style/Theme.DeviceDefault.Light.Dialog.Alert">
             <intent-filter android:priority="1">
                 <action android:name="android.net.scoring.CHANGE_ACTIVE" />
                 <category android:name="android.intent.category.DEFAULT" />
@@ -2764,7 +2764,7 @@
         </activity>
 
         <activity android:name=".sim.SimPreferenceDialog"
-            android:theme="@android:style/Theme.Material.Light.Dialog.NoActionBar"
+            android:theme="@android:style/Theme.DeviceDefault.Light.Dialog.NoActionBar"
             android:excludeFromRecents="true">
         </activity>
 
@@ -2782,7 +2782,7 @@
         </activity>
 
         <activity android:name=".sim.SimDialogActivity"
-                android:theme="@android:style/Theme.Material.Light.Dialog.NoActionBar"
+                android:theme="@android:style/Theme.DeviceDefault.Light.Dialog.NoActionBar"
                 android:label="@string/sim_settings_title"
                 android:excludeFromRecents="true">
             <intent-filter>
@@ -2908,7 +2908,7 @@
         <activity android:name=".WebViewImplementation"
                   android:exported="true"
                   android:excludeFromRecents="true"
-                  android:theme="@*android:style/Theme.Material.Light.Dialog.Alert">
+                  android:theme="@*android:style/Theme.DeviceDefault.Light.Dialog.Alert">
             <intent-filter>
                 <action android:name="android.settings.WEBVIEW_SETTINGS" />
                 <category android:name="android.intent.category.DEFAULT" />