diff --git a/src/com/android/settings/AllInOneTetherSettings.java b/src/com/android/settings/AllInOneTetherSettings.java
index 1c7ea1d..098e6fb 100644
--- a/src/com/android/settings/AllInOneTetherSettings.java
+++ b/src/com/android/settings/AllInOneTetherSettings.java
@@ -36,12 +36,14 @@
 import android.os.Bundle;
 import android.os.UserManager;
 import android.text.TextUtils;
+import android.util.FeatureFlagUtils;
 import android.util.Log;
 
 import androidx.annotation.VisibleForTesting;
 import androidx.preference.Preference;
 import androidx.preference.PreferenceGroup;
 
+import com.android.settings.core.FeatureFlags;
 import com.android.settings.dashboard.RestrictedDashboardFragment;
 import com.android.settings.datausage.DataSaverBackend;
 import com.android.settings.network.TetherEnabler;
@@ -72,19 +74,24 @@
         WifiTetherBasePreferenceController.OnTetherConfigUpdateListener,
         SharedPreferences.OnSharedPreferenceChangeListener {
 
-    @VisibleForTesting
-    static final String KEY_TETHER_PREFS_SCREEN = "tether_prefs_screen";
-    @VisibleForTesting
-    static final String KEY_WIFI_TETHER_NETWORK_NAME = "wifi_tether_network_name";
-    @VisibleForTesting
-    static final String KEY_WIFI_TETHER_NETWORK_PASSWORD = "wifi_tether_network_password";
-    @VisibleForTesting
-    static final String KEY_WIFI_TETHER_AUTO_OFF = "wifi_tether_auto_turn_off";
-    @VisibleForTesting
-    static final String KEY_WIFI_TETHER_NETWORK_AP_BAND = "wifi_tether_network_ap_band";
+    // TODO(b/148622133): Should clean up the postfix once this fragment replaced TetherSettings.
+    public static final String DEDUP_POSTFIX = "_2";
 
+    @VisibleForTesting
+    static final String KEY_WIFI_TETHER_NETWORK_NAME = "wifi_tether_network_name" + DEDUP_POSTFIX;
+    @VisibleForTesting
+    static final String KEY_WIFI_TETHER_NETWORK_PASSWORD =
+            "wifi_tether_network_password" + DEDUP_POSTFIX;
+    @VisibleForTesting
+    static final String KEY_WIFI_TETHER_AUTO_OFF = "wifi_tether_auto_turn_off" + DEDUP_POSTFIX;
+    @VisibleForTesting
+    static final String KEY_WIFI_TETHER_NETWORK_AP_BAND =
+            "wifi_tether_network_ap_band" + DEDUP_POSTFIX;
+    @VisibleForTesting
+    static final String KEY_WIFI_TETHER_SECURITY = "wifi_tether_security" + DEDUP_POSTFIX;
+
+    private static final String KEY_DATA_SAVER_FOOTER = "disabled_on_data_saver" + DEDUP_POSTFIX;
     private static final String KEY_WIFI_TETHER_GROUP = "wifi_tether_settings_group";
-    private static final String KEY_DATA_SAVER_FOOTER = "disabled_on_data_saver";
     private static final int EXPANDED_CHILD_COUNT_WITH_SECURITY_NON = 2;
     private static final int EXPANDED_CHILD_COUNT_DEFAULT = 3;
     private static final String TAG = "AllInOneTetherSettings";
@@ -394,20 +401,18 @@
                     final List<String> keys = super.getNonIndexableKeys(context);
 
                     if (!TetherUtil.isTetherAvailable(context)) {
-                        keys.add(KEY_TETHER_PREFS_SCREEN);
                         keys.add(KEY_WIFI_TETHER_NETWORK_NAME);
                         keys.add(KEY_WIFI_TETHER_NETWORK_PASSWORD);
                         keys.add(KEY_WIFI_TETHER_AUTO_OFF);
                         keys.add(KEY_WIFI_TETHER_NETWORK_AP_BAND);
+                        keys.add(KEY_WIFI_TETHER_SECURITY);
                     }
-
                     return keys;
                 }
 
                 @Override
                 protected boolean isPageSearchEnabled(Context context) {
-                    return context.getResources().getBoolean(
-                            R.bool.config_show_all_in_one_tether_settings);
+                    return FeatureFlagUtils.isEnabled(context, FeatureFlags.TETHER_ALL_IN_ONE);
                 }
 
                 @Override
diff --git a/src/com/android/settings/TetherSettings.java b/src/com/android/settings/TetherSettings.java
index da86cbf..a29ec95 100644
--- a/src/com/android/settings/TetherSettings.java
+++ b/src/com/android/settings/TetherSettings.java
@@ -36,11 +36,13 @@
 import android.os.Handler;
 import android.os.UserManager;
 import android.provider.SearchIndexableResource;
+import android.util.FeatureFlagUtils;
 
 import androidx.annotation.VisibleForTesting;
 import androidx.preference.Preference;
 import androidx.preference.SwitchPreference;
 
+import com.android.settings.core.FeatureFlags;
 import com.android.settings.datausage.DataSaverBackend;
 import com.android.settings.search.BaseSearchIndexProvider;
 import com.android.settings.wifi.tether.WifiTetherPreferenceController;
@@ -452,8 +454,7 @@
 
                 @Override
                 protected boolean isPageSearchEnabled(Context context) {
-                    return !context.getResources().getBoolean(
-                            R.bool.config_show_all_in_one_tether_settings);
+                    return !FeatureFlagUtils.isEnabled(context, FeatureFlags.TETHER_ALL_IN_ONE);
                 }
 
                 @Override
diff --git a/src/com/android/settings/network/TetherPreferenceController.java b/src/com/android/settings/network/TetherPreferenceController.java
index 5e52692..8fc05aa 100644
--- a/src/com/android/settings/network/TetherPreferenceController.java
+++ b/src/com/android/settings/network/TetherPreferenceController.java
@@ -33,13 +33,16 @@
 import android.os.Handler;
 import android.os.UserHandle;
 import android.provider.Settings;
+import android.util.FeatureFlagUtils;
 
 import androidx.annotation.VisibleForTesting;
 import androidx.preference.Preference;
 import androidx.preference.PreferenceScreen;
 
+import com.android.settings.AllInOneTetherSettings;
 import com.android.settings.R;
 import com.android.settings.TetherSettings;
+import com.android.settings.core.FeatureFlags;
 import com.android.settings.core.PreferenceControllerMixin;
 import com.android.settingslib.TetherUtil;
 import com.android.settingslib.core.AbstractPreferenceController;
@@ -110,8 +113,8 @@
             // Grey out if provisioning is not available.
             mPreference.setEnabled(!TetherSettings.isProvisioningNeededButUnavailable(mContext));
 
-            if (mContext.getResources().getBoolean(R.bool.config_show_all_in_one_tether_settings)) {
-                mPreference.setFragment("com.android.settings.AllInOneTetherSettings");
+            if (FeatureFlagUtils.isEnabled(mContext, FeatureFlags.TETHER_ALL_IN_ONE)) {
+                mPreference.setFragment(AllInOneTetherSettings.class.getName());
             }
         }
     }
diff --git a/src/com/android/settings/wifi/tether/WifiTetherApBandPreferenceController.java b/src/com/android/settings/wifi/tether/WifiTetherApBandPreferenceController.java
index b9b0d64..add40b0 100644
--- a/src/com/android/settings/wifi/tether/WifiTetherApBandPreferenceController.java
+++ b/src/com/android/settings/wifi/tether/WifiTetherApBandPreferenceController.java
@@ -16,9 +16,12 @@
 
 package com.android.settings.wifi.tether;
 
+import static com.android.settings.AllInOneTetherSettings.DEDUP_POSTFIX;
+
 import android.content.Context;
 import android.content.res.Resources;
 import android.net.wifi.SoftApConfiguration;
+import android.util.FeatureFlagUtils;
 import android.util.Log;
 
 import androidx.annotation.VisibleForTesting;
@@ -26,6 +29,7 @@
 import androidx.preference.Preference;
 
 import com.android.settings.R;
+import com.android.settings.core.FeatureFlags;
 
 public class WifiTetherApBandPreferenceController extends WifiTetherBasePreferenceController {
 
@@ -87,7 +91,8 @@
 
     @Override
     public String getPreferenceKey() {
-        return PREF_KEY;
+        return FeatureFlagUtils.isEnabled(mContext, FeatureFlags.TETHER_ALL_IN_ONE)
+                ? PREF_KEY + DEDUP_POSTFIX : PREF_KEY;
     }
 
     @Override
diff --git a/src/com/android/settings/wifi/tether/WifiTetherPasswordPreferenceController.java b/src/com/android/settings/wifi/tether/WifiTetherPasswordPreferenceController.java
index 1563e61..03ea121 100644
--- a/src/com/android/settings/wifi/tether/WifiTetherPasswordPreferenceController.java
+++ b/src/com/android/settings/wifi/tether/WifiTetherPasswordPreferenceController.java
@@ -16,14 +16,18 @@
 
 package com.android.settings.wifi.tether;
 
+import static com.android.settings.AllInOneTetherSettings.DEDUP_POSTFIX;
+
 import android.content.Context;
 import android.net.wifi.SoftApConfiguration;
 import android.text.TextUtils;
+import android.util.FeatureFlagUtils;
 
 import androidx.preference.EditTextPreference;
 import androidx.preference.Preference;
 
 import com.android.settings.R;
+import com.android.settings.core.FeatureFlags;
 import com.android.settings.widget.ValidatedEditTextPreference;
 import com.android.settings.wifi.WifiUtils;
 
@@ -43,7 +47,8 @@
 
     @Override
     public String getPreferenceKey() {
-        return PREF_KEY;
+        return FeatureFlagUtils.isEnabled(mContext, FeatureFlags.TETHER_ALL_IN_ONE)
+                ? PREF_KEY + DEDUP_POSTFIX : PREF_KEY;
     }
 
     @Override
diff --git a/src/com/android/settings/wifi/tether/WifiTetherSSIDPreferenceController.java b/src/com/android/settings/wifi/tether/WifiTetherSSIDPreferenceController.java
index 0283b0f..a4289a6 100644
--- a/src/com/android/settings/wifi/tether/WifiTetherSSIDPreferenceController.java
+++ b/src/com/android/settings/wifi/tether/WifiTetherSSIDPreferenceController.java
@@ -16,16 +16,20 @@
 
 package com.android.settings.wifi.tether;
 
+import static com.android.settings.AllInOneTetherSettings.DEDUP_POSTFIX;
+
 import android.app.settings.SettingsEnums;
 import android.content.Context;
 import android.content.Intent;
 import android.net.wifi.SoftApConfiguration;
+import android.util.FeatureFlagUtils;
 import android.util.Log;
 
 import androidx.annotation.VisibleForTesting;
 import androidx.preference.EditTextPreference;
 import androidx.preference.Preference;
 
+import com.android.settings.core.FeatureFlags;
 import com.android.settings.overlay.FeatureFactory;
 import com.android.settings.widget.ValidatedEditTextPreference;
 import com.android.settings.wifi.dpp.WifiDppUtils;
@@ -54,7 +58,8 @@
 
     @Override
     public String getPreferenceKey() {
-        return PREF_KEY;
+        return FeatureFlagUtils.isEnabled(mContext, FeatureFlags.TETHER_ALL_IN_ONE)
+                ? PREF_KEY + DEDUP_POSTFIX : PREF_KEY;
     }
 
     @Override
diff --git a/src/com/android/settings/wifi/tether/WifiTetherSecurityPreferenceController.java b/src/com/android/settings/wifi/tether/WifiTetherSecurityPreferenceController.java
index 9b9617a..56b5031 100644
--- a/src/com/android/settings/wifi/tether/WifiTetherSecurityPreferenceController.java
+++ b/src/com/android/settings/wifi/tether/WifiTetherSecurityPreferenceController.java
@@ -1,12 +1,16 @@
 package com.android.settings.wifi.tether;
 
+import static com.android.settings.AllInOneTetherSettings.DEDUP_POSTFIX;
+
 import android.content.Context;
 import android.net.wifi.SoftApConfiguration;
+import android.util.FeatureFlagUtils;
 
 import androidx.preference.ListPreference;
 import androidx.preference.Preference;
 
 import com.android.settings.R;
+import com.android.settings.core.FeatureFlags;
 
 public class WifiTetherSecurityPreferenceController extends WifiTetherBasePreferenceController {
 
@@ -23,7 +27,8 @@
 
     @Override
     public String getPreferenceKey() {
-        return PREF_KEY;
+        return FeatureFlagUtils.isEnabled(mContext, FeatureFlags.TETHER_ALL_IN_ONE)
+                ? PREF_KEY + DEDUP_POSTFIX : PREF_KEY;
     }
 
     @Override
diff --git a/src/com/android/settings/wifi/tether/WifiTetherSettings.java b/src/com/android/settings/wifi/tether/WifiTetherSettings.java
index 4665515..66d017a 100644
--- a/src/com/android/settings/wifi/tether/WifiTetherSettings.java
+++ b/src/com/android/settings/wifi/tether/WifiTetherSettings.java
@@ -28,6 +28,7 @@
 import android.net.wifi.WifiManager;
 import android.os.Bundle;
 import android.os.UserManager;
+import android.util.FeatureFlagUtils;
 import android.util.Log;
 
 import androidx.annotation.VisibleForTesting;
@@ -35,6 +36,7 @@
 
 import com.android.settings.R;
 import com.android.settings.SettingsActivity;
+import com.android.settings.core.FeatureFlags;
 import com.android.settings.dashboard.RestrictedDashboardFragment;
 import com.android.settings.search.BaseSearchIndexProvider;
 import com.android.settings.widget.SwitchBar;
@@ -259,8 +261,7 @@
 
                 @Override
                 protected boolean isPageSearchEnabled(Context context) {
-                    return !context.getResources().getBoolean(
-                            R.bool.config_show_all_in_one_tether_settings);
+                    return !FeatureFlagUtils.isEnabled(context, FeatureFlags.TETHER_ALL_IN_ONE);
                 }
 
                 @Override