diff --git a/src/com/android/settings/network/telephony/AbstractMobileNetworkSettings.java b/src/com/android/settings/network/telephony/AbstractMobileNetworkSettings.java
index 889fbae..e92cdfc 100644
--- a/src/com/android/settings/network/telephony/AbstractMobileNetworkSettings.java
+++ b/src/com/android/settings/network/telephony/AbstractMobileNetworkSettings.java
@@ -16,6 +16,11 @@
 
 package com.android.settings.network.telephony;
 
+import android.text.TextUtils;
+
+import androidx.preference.Preference;
+import androidx.preference.PreferenceScreen;
+
 import com.android.settings.dashboard.RestrictedDashboardFragment;
 import com.android.settingslib.core.AbstractPreferenceController;
 
@@ -27,6 +32,9 @@
 
     private static final String LOG_TAG = "AbsNetworkSettings";
 
+    private List<AbstractPreferenceController> mHiddenControllerList =
+            new ArrayList<AbstractPreferenceController>();
+
     /**
      * @param restrictionKey The restriction key to check before pin protecting
      *            this settings page. Pass in {@link RESTRICT_IF_OVERRIDABLE} if it should
@@ -50,4 +58,46 @@
                 .build();
     }
 
+    @Override
+    public void onExpandButtonClick() {
+        final PreferenceScreen screen = getPreferenceScreen();
+        mHiddenControllerList.stream()
+                .filter(controller -> controller.isAvailable())
+                .forEach(controller -> {
+                    final String key = controller.getPreferenceKey();
+                    final Preference preference = screen.findPreference(key);
+                    controller.updateState(preference);
+                });
+        super.onExpandButtonClick();
+    }
+
+    /*
+     * Replace design within {@link DashboardFragment#updatePreferenceStates()}
+     */
+    @Override
+    protected void updatePreferenceStates() {
+        mHiddenControllerList.clear();
+
+        final PreferenceScreen screen = getPreferenceScreen();
+        getPreferenceControllersAsList().forEach(controller -> {
+            final String key = controller.getPreferenceKey();
+            if (TextUtils.isEmpty(key)) {
+                return;
+            }
+            final Preference preference = screen.findPreference(key);
+            if (preference == null) {
+                return;
+            }
+            if (!isPreferenceExpanded(preference)) {
+                mHiddenControllerList.add(controller);
+                return;
+            }
+            if (!controller.isAvailable()) {
+                return;
+            }
+            controller.updateState(preference);
+        });
+    }
+
+
 }
diff --git a/src/com/android/settings/network/telephony/MobileNetworkSettings.java b/src/com/android/settings/network/telephony/MobileNetworkSettings.java
index a9148dd..7c1c8dd 100644
--- a/src/com/android/settings/network/telephony/MobileNetworkSettings.java
+++ b/src/com/android/settings/network/telephony/MobileNetworkSettings.java
@@ -34,7 +34,6 @@
 
 import androidx.annotation.VisibleForTesting;
 import androidx.preference.Preference;
-import androidx.preference.PreferenceScreen;
 
 import com.android.internal.telephony.TelephonyIntents;
 import com.android.settings.R;
@@ -56,7 +55,6 @@
 
 import java.util.ArrayList;
 import java.util.Arrays;
-import java.util.Collection;
 import java.util.List;
 import java.util.concurrent.ExecutionException;
 import java.util.concurrent.Future;
@@ -86,8 +84,6 @@
     private UserManager mUserManager;
     private String mClickedPrefKey;
 
-    private List<AbstractPreferenceController> mHiddenControllerList;
-
     public MobileNetworkSettings() {
         super(UserManager.DISALLOW_CONFIG_MOBILE_NETWORKS);
     }
@@ -210,50 +206,6 @@
         onRestoreInstance(icicle);
     }
 
-    @Override
-    public void onExpandButtonClick() {
-        final PreferenceScreen screen = getPreferenceScreen();
-        mHiddenControllerList.stream()
-                .filter(controller -> controller.isAvailable())
-                .forEach(controller -> {
-                    final String key = controller.getPreferenceKey();
-                    final Preference preference = screen.findPreference(key);
-                    controller.updateState(preference);
-                });
-        super.onExpandButtonClick();
-    }
-
-    /*
-     * Replace design within {@link DashboardFragment#updatePreferenceStates()}
-     */
-    @Override
-    protected void updatePreferenceStates() {
-        mHiddenControllerList = new ArrayList<AbstractPreferenceController>();
-
-        final PreferenceScreen screen = getPreferenceScreen();
-        final Collection<List<AbstractPreferenceController>> controllerLists =
-                getPreferenceControllers();
-        controllerLists.stream().flatMap(Collection::stream)
-                .forEach(controller -> {
-                    final String key = controller.getPreferenceKey();
-                    if (TextUtils.isEmpty(key)) {
-                        return;
-                    }
-                    final Preference preference = screen.findPreference(key);
-                    if (preference == null) {
-                        return;
-                    }
-                    if (!isPreferenceExpanded(preference)) {
-                        mHiddenControllerList.add(controller);
-                        return;
-                    }
-                    if (!controller.isAvailable()) {
-                        return;
-                    }
-                    controller.updateState(preference);
-                });
-    }
-
     @VisibleForTesting
     void onRestoreInstance(Bundle icicle) {
         if (icicle != null) {