diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 2325408..c3c5012 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -231,6 +231,28 @@
             </intent-filter>
         </receiver>
 
+        <receiver
+            android:name=".development.Enable16KBootReceiver"
+            android:enabled="true"
+            android:exported="false">
+            <intent-filter>
+                <action android:name="android.intent.action.BOOT_COMPLETED" />
+            </intent-filter>
+        </receiver>
+
+        <service
+            android:name=".development.PageAgnosticNotificationService"
+            android:enabled="true"
+            android:exported="false"
+            android:permission="android.permission.POST_NOTIFICATIONS"/>
+
+        <activity android:name=".development.PageAgnosticWarningActivity"
+                  android:enabled="true"
+                  android:launchMode="singleTask"
+                  android:taskAffinity=""
+                  android:excludeFromRecents="true"
+                  android:theme="@*android:style/Theme.DeviceDefault.Dialog.Alert.DayNight"/>
+
         <activity android:name=".SubSettings"
                   android:exported="false"
                   android:theme="@style/Theme.SubSettings"
diff --git a/src/com/android/settings/development/Enable16KBootReceiver.java b/src/com/android/settings/development/Enable16KBootReceiver.java
new file mode 100644
index 0000000..007a67b
--- /dev/null
+++ b/src/com/android/settings/development/Enable16KBootReceiver.java
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2024 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.development;
+
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.os.UserHandle;
+
+import androidx.annotation.NonNull;
+
+public class Enable16KBootReceiver extends BroadcastReceiver {
+
+    @Override
+    public void onReceive(@NonNull Context context, @NonNull Intent intent) {
+        String action = intent.getAction();
+        if (!Intent.ACTION_BOOT_COMPLETED.equals(action)) {
+            return;
+        }
+
+        // Do nothing if device is not in page-agnostic mode
+        if (!Enable16kUtils.isPageAgnosticModeOn(context)) {
+            return;
+        }
+
+        // start a service to post persistent notification
+        Intent startNotificationIntent = new Intent(context, PageAgnosticNotificationService.class);
+        context.startServiceAsUser(startNotificationIntent, UserHandle.SYSTEM);
+    }
+}
diff --git a/src/com/android/settings/development/Enable16kPagesPreferenceController.java b/src/com/android/settings/development/Enable16kPagesPreferenceController.java
index 7156f0b..23a6a22 100644
--- a/src/com/android/settings/development/Enable16kPagesPreferenceController.java
+++ b/src/com/android/settings/development/Enable16kPagesPreferenceController.java
@@ -23,17 +23,11 @@
 import android.os.PersistableBundle;
 import android.os.PowerManager;
 import android.os.RecoverySystem;
-import android.os.SystemProperties;
 import android.os.SystemUpdateManager;
 import android.os.UpdateEngine;
 import android.os.UpdateEngineStable;
 import android.os.UpdateEngineStableCallback;
-import android.os.UserHandle;
-import android.os.UserManager;
 import android.provider.Settings;
-import android.service.oemlock.OemLockManager;
-import android.system.Os;
-import android.system.OsConstants;
 import android.util.Log;
 import android.widget.LinearLayout;
 import android.widget.ProgressBar;
@@ -59,7 +53,6 @@
 import java.io.BufferedReader;
 import java.io.File;
 import java.io.FileNotFoundException;
-import java.io.FileReader;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;
@@ -80,10 +73,6 @@
     private static final String TAG = "Enable16kPages";
     private static final String REBOOT_REASON = "toggle16k";
     private static final String ENABLE_16K_PAGES = "enable_16k_pages";
-
-    @VisibleForTesting
-    static final String DEV_OPTION_PROPERTY = "ro.product.build.16k_page.enabled";
-
     private static final int ENABLE_4K_PAGE_SIZE = 0;
     private static final int ENABLE_16K_PAGE_SIZE = 1;
 
@@ -97,9 +86,6 @@
     private static final int OFFSET_TO_FILE_NAME = 30;
     public static final String EXPERIMENTAL_UPDATE_TITLE = "Android 16K Kernel Experimental Update";
 
-    private static final long PAGE_SIZE = Os.sysconf(OsConstants._SC_PAGESIZE);
-    private static final int PAGE_SIZE_16KB = 16 * 1024;
-
     private @NonNull DevelopmentSettingsDashboardFragment mFragment;
     private boolean mEnable16k;
 
@@ -112,12 +98,12 @@
             @NonNull Context context, @NonNull DevelopmentSettingsDashboardFragment fragment) {
         super(context);
         this.mFragment = fragment;
-        mEnable16k = (PAGE_SIZE == PAGE_SIZE_16KB);
+        mEnable16k = Enable16kUtils.isUsing16kbPages();
     }
 
     @Override
     public boolean isAvailable() {
-        return SystemProperties.getBoolean(DEV_OPTION_PROPERTY, false);
+        return Enable16kUtils.is16KbToggleAvailable();
     }
 
     @Override
@@ -129,12 +115,12 @@
     public boolean onPreferenceChange(Preference preference, Object newValue) {
         mEnable16k = (Boolean) newValue;
         // Prompt user to do oem unlock first
-        if (!isDeviceOEMUnlocked()) {
+        if (!Enable16kUtils.isDeviceOEMUnlocked(mContext)) {
             Enable16KOemUnlockDialog.show(mFragment);
             return false;
         }
 
-        if (isDataf2fs()) {
+        if (!Enable16kUtils.isDataExt4()) {
             EnableExt4WarningDialog.show(mFragment, this);
             return false;
         }
@@ -145,7 +131,7 @@
     @Override
     public void updateState(Preference preference) {
         int defaultOptionValue =
-                PAGE_SIZE == PAGE_SIZE_16KB ? ENABLE_16K_PAGE_SIZE : ENABLE_4K_PAGE_SIZE;
+                Enable16kUtils.isUsing16kbPages() ? ENABLE_16K_PAGE_SIZE : ENABLE_4K_PAGE_SIZE;
         final int optionValue =
                 Settings.Global.getInt(
                         mContext.getContentResolver(),
@@ -169,7 +155,7 @@
     @Override
     protected void onDeveloperOptionsSwitchEnabled() {
         int currentStatus =
-                PAGE_SIZE == PAGE_SIZE_16KB ? ENABLE_16K_PAGE_SIZE : ENABLE_4K_PAGE_SIZE;
+                Enable16kUtils.isUsing16kbPages() ? ENABLE_16K_PAGE_SIZE : ENABLE_4K_PAGE_SIZE;
         Settings.Global.putInt(
                 mContext.getContentResolver(), Settings.Global.ENABLE_16K_PAGES, currentStatus);
     }
@@ -432,51 +418,6 @@
         return infoBundle;
     }
 
-    private boolean isDataf2fs() {
-        try (BufferedReader br = new BufferedReader(new FileReader("/proc/mounts"))) {
-            String line;
-            while ((line = br.readLine()) != null) {
-                final String[] fields = line.split(" ");
-                final String partition = fields[1];
-                final String fsType = fields[2];
-                if (partition.equals("/data") && fsType.equals("f2fs")) {
-                    return true;
-                }
-            }
-        } catch (IOException e) {
-            Log.e(TAG, "Failed to read /proc/mounts");
-            displayToast(mContext.getString(R.string.format_ext4_failure_toast));
-        }
-
-        return false;
-    }
-
-    private boolean isDeviceOEMUnlocked() {
-        // OEM unlock is checked for bootloader, carrier and user. Check all three to ensure
-        // that device is unlocked and it is also allowed by user as well as carrier
-        final OemLockManager oemLockManager = mContext.getSystemService(OemLockManager.class);
-        final UserManager userManager = mContext.getSystemService(UserManager.class);
-        if (oemLockManager == null || userManager == null) {
-            Log.e(TAG, "Required services not found on device to check for OEM unlock state.");
-            return false;
-        }
-
-        // If either of device or carrier is not allowed to unlock, return false
-        if (!oemLockManager.isDeviceOemUnlocked()
-                || !oemLockManager.isOemUnlockAllowedByCarrier()) {
-            Log.e(TAG, "Device is not OEM unlocked or it is not allowed by carrier");
-            return false;
-        }
-
-        final UserHandle userHandle = UserHandle.of(UserHandle.myUserId());
-        if (userManager.hasBaseUserRestriction(UserManager.DISALLOW_FACTORY_RESET, userHandle)) {
-            Log.e(TAG, "Factory reset is not allowed for user.");
-            return false;
-        }
-
-        return true;
-    }
-
     // if BOARD_16K_OTA_MOVE_VENDOR, OTAs will be present on the /vendor partition
     private File getOtaFile() throws FileNotFoundException {
         String otaPath = mEnable16k ? OTA_16K_PATH : OTA_4K_PATH;
diff --git a/src/com/android/settings/development/Enable16kUtils.java b/src/com/android/settings/development/Enable16kUtils.java
new file mode 100644
index 0000000..7b6ab68
--- /dev/null
+++ b/src/com/android/settings/development/Enable16kUtils.java
@@ -0,0 +1,119 @@
+/*
+ * Copyright (C) 2024 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.development;
+
+import android.content.Context;
+import android.os.SystemProperties;
+import android.os.UserHandle;
+import android.os.UserManager;
+import android.service.oemlock.OemLockManager;
+import android.system.Os;
+import android.system.OsConstants;
+import android.util.Log;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.VisibleForTesting;
+
+import java.io.BufferedReader;
+import java.io.FileReader;
+import java.io.IOException;
+
+public class Enable16kUtils {
+    private static final long PAGE_SIZE = Os.sysconf(OsConstants._SC_PAGESIZE);
+    private static final int PAGE_SIZE_16KB = 16 * 1024;
+
+    @VisibleForTesting
+    static final String DEV_OPTION_PROPERTY = "ro.product.build.16k_page.enabled";
+
+    private static final String TAG = "Enable16kUtils";
+
+    /**
+     * @param context uses context to retrieve OEM unlock info
+     * @return true if device is OEM unlocked and factory reset is allowed for user.
+     */
+    public static boolean isDeviceOEMUnlocked(@NonNull Context context) {
+        // OEM unlock is checked for bootloader, carrier and user. Check all three to ensure
+        // that device is unlocked and it is also allowed by user as well as carrier
+        final OemLockManager oemLockManager = context.getSystemService(OemLockManager.class);
+        final UserManager userManager = context.getSystemService(UserManager.class);
+        if (oemLockManager == null || userManager == null) {
+            Log.e(TAG, "Required services not found on device to check for OEM unlock state.");
+            return false;
+        }
+
+        // If either of device or carrier is not allowed to unlock, return false
+        if (!oemLockManager.isDeviceOemUnlocked()) {
+            Log.e(TAG, "Device is not OEM unlocked");
+            return false;
+        }
+
+        final UserHandle userHandle = UserHandle.of(UserHandle.myUserId());
+        if (userManager.hasBaseUserRestriction(UserManager.DISALLOW_FACTORY_RESET, userHandle)) {
+            Log.e(TAG, "Factory reset is not allowed for user.");
+            return false;
+        }
+
+        return true;
+    }
+
+    /**
+     * @return true if /data partition is ext4
+     */
+    public static boolean isDataExt4() {
+        try (BufferedReader br = new BufferedReader(new FileReader("/proc/mounts"))) {
+            String line;
+            while ((line = br.readLine()) != null) {
+                Log.i(TAG, line);
+                final String[] fields = line.split(" ");
+                final String partition = fields[1];
+                final String fsType = fields[2];
+                if (partition.equals("/data") && fsType.equals("ext4")) {
+                    return true;
+                }
+            }
+        } catch (IOException e) {
+            Log.e(TAG, "Failed to read /proc/mounts");
+        }
+
+        return false;
+    }
+
+    /**
+     * @return returns true if 16KB developer option is available for the device.
+     */
+    public static boolean is16KbToggleAvailable() {
+        return SystemProperties.getBoolean(DEV_OPTION_PROPERTY, false);
+    }
+
+    /**
+     * 16kB page-agnostic mode requires /data to be ext4, ro.product.build.16k_page.enabled for
+     * device and Device OEM unlocked.
+     *
+     * @param context is needed to query OEM unlock state
+     * @return true if device is in page-agnostic mode.
+     */
+    public static boolean isPageAgnosticModeOn(@NonNull Context context) {
+        return is16KbToggleAvailable() && isDeviceOEMUnlocked(context) && isDataExt4();
+    }
+
+    /**
+     * @return returns true if current page size is 16KB
+     */
+    public static boolean isUsing16kbPages() {
+        return PAGE_SIZE == PAGE_SIZE_16KB;
+    }
+}
diff --git a/src/com/android/settings/development/PageAgnosticNotificationService.java b/src/com/android/settings/development/PageAgnosticNotificationService.java
new file mode 100644
index 0000000..29bc776
--- /dev/null
+++ b/src/com/android/settings/development/PageAgnosticNotificationService.java
@@ -0,0 +1,119 @@
+/*
+ * Copyright (C) 2024 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.development;
+
+import android.app.Notification;
+import android.app.NotificationChannel;
+import android.app.NotificationManager;
+import android.app.PendingIntent;
+import android.app.Service;
+import android.content.Intent;
+import android.os.IBinder;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+
+import com.android.settings.R;
+
+public class PageAgnosticNotificationService extends Service {
+
+    private static final String NOTIFICATION_CHANNEL_ID =
+            "com.android.settings.development.PageAgnosticNotificationService";
+    private static final int NOTIFICATION_ID = 1;
+
+    private NotificationManager mNotificationManager;
+
+    @Nullable
+    @Override
+    public IBinder onBind(@NonNull Intent intent) {
+        return null;
+    }
+
+    // create a notification channel to post persistent notification
+    private void createNotificationChannel() {
+        NotificationChannel channel =
+                new NotificationChannel(
+                        NOTIFICATION_CHANNEL_ID,
+                        getString(R.string.page_agnostic_notification_channel_name),
+                        NotificationManager.IMPORTANCE_HIGH);
+        mNotificationManager = getSystemService(NotificationManager.class);
+        if (mNotificationManager != null) {
+            mNotificationManager.createNotificationChannel(channel);
+        }
+    }
+
+    @Override
+    public void onCreate() {
+        super.onCreate();
+        createNotificationChannel();
+    }
+
+    private Notification buildNotification() {
+        // Get the title and text according to page size
+        boolean isIn16kbMode = Enable16kUtils.isUsing16kbPages();
+        String title =
+                isIn16kbMode
+                        ? getString(R.string.page_agnostic_16k_pages_title)
+                        : getString(R.string.page_agnostic_4k_pages_title);
+        String text =
+                isIn16kbMode
+                        ? getString(R.string.page_agnostic_16k_pages_text_short)
+                        : getString(R.string.page_agnostic_4k_pages_text_short);
+
+        Intent notifyIntent = new Intent(this, PageAgnosticWarningActivity.class);
+        // Set the Activity to start in a new, empty task.
+        notifyIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
+
+        // Create the PendingIntent.
+        PendingIntent notifyPendingIntent =
+                PendingIntent.getActivity(
+                        this,
+                        0,
+                        notifyIntent,
+                        PendingIntent.FLAG_UPDATE_CURRENT | PendingIntent.FLAG_IMMUTABLE);
+
+        Notification.Action action =
+                new Notification.Action.Builder(
+                                R.drawable.empty_icon,
+                                getString(R.string.page_agnostic_notification_action),
+                                notifyPendingIntent)
+                        .build();
+
+        Notification.Builder builder =
+                new Notification.Builder(this, NOTIFICATION_CHANNEL_ID)
+                        .setContentTitle(title)
+                        .setContentText(text)
+                        .setOngoing(true)
+                        .setSmallIcon(R.drawable.ic_settings_24dp)
+                        .setStyle(new Notification.BigTextStyle().bigText(text))
+                        .setContentIntent(notifyPendingIntent)
+                        .addAction(action);
+
+        return builder.build();
+    }
+
+    @Override
+    public int onStartCommand(@Nullable Intent intent, int flags, int startId) {
+        Notification notification = buildNotification();
+        if (mNotificationManager != null) {
+            mNotificationManager.notify(NOTIFICATION_ID, notification);
+        }
+
+        // When clicked on notification, show dialog with full text
+        return Service.START_NOT_STICKY;
+    }
+}
diff --git a/src/com/android/settings/development/PageAgnosticWarningActivity.java b/src/com/android/settings/development/PageAgnosticWarningActivity.java
new file mode 100644
index 0000000..8fd6074
--- /dev/null
+++ b/src/com/android/settings/development/PageAgnosticWarningActivity.java
@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2024 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.development;
+
+import android.app.Activity;
+import android.app.AlertDialog;
+import android.content.DialogInterface;
+import android.os.Bundle;
+import android.text.Html;
+import android.text.method.LinkMovementMethod;
+import android.widget.TextView;
+
+import androidx.annotation.NonNull;
+
+import com.android.settings.R;
+
+public class PageAgnosticWarningActivity extends Activity {
+
+    @Override
+    protected void onCreate(Bundle bundle) {
+        super.onCreate(bundle);
+
+        String title =
+                Enable16kUtils.isUsing16kbPages()
+                        ? getString(R.string.page_agnostic_16k_pages_title)
+                        : getString(R.string.page_agnostic_4k_pages_title);
+
+        String warningText =
+                Enable16kUtils.isUsing16kbPages()
+                        ? getString(R.string.page_agnostic_16k_pages_text)
+                        : getString(R.string.page_agnostic_4k_pages_text);
+        showWarningDialog(title, warningText);
+    }
+
+    // Create warning dialog and make links clickable
+    private void showWarningDialog(String title, String warningText) {
+
+        AlertDialog dialog =
+                new AlertDialog.Builder(this)
+                        .setTitle(title)
+                        .setMessage(Html.fromHtml(warningText, Html.FROM_HTML_MODE_COMPACT))
+                        .setCancelable(false)
+                        .setPositiveButton(
+                                android.R.string.ok,
+                                new DialogInterface.OnClickListener() {
+                                    public void onClick(
+                                            @NonNull DialogInterface dialog, int which) {
+                                        dialog.cancel();
+                                        finish();
+                                    }
+                                })
+                        .create();
+        dialog.show();
+
+        ((TextView) dialog.findViewById(android.R.id.message))
+                .setMovementMethod(LinkMovementMethod.getInstance());
+    }
+}
diff --git a/tests/robotests/src/com/android/settings/development/Enable16kPagesPreferenceControllerTest.java b/tests/robotests/src/com/android/settings/development/Enable16kPagesPreferenceControllerTest.java
index 0c9906c..e27e3a2 100644
--- a/tests/robotests/src/com/android/settings/development/Enable16kPagesPreferenceControllerTest.java
+++ b/tests/robotests/src/com/android/settings/development/Enable16kPagesPreferenceControllerTest.java
@@ -62,13 +62,13 @@
 
     @Test
     public void onSystemPropertyDisabled_shouldDisablePreference() {
-        SystemProperties.set(Enable16kPagesPreferenceController.DEV_OPTION_PROPERTY, "false");
+        SystemProperties.set(Enable16kUtils.DEV_OPTION_PROPERTY, "false");
         assertThat(mController.isAvailable()).isEqualTo(false);
     }
 
     @Test
     public void onSystemPropertyEnabled_shouldEnablePreference() {
-        SystemProperties.set(Enable16kPagesPreferenceController.DEV_OPTION_PROPERTY, "true");
+        SystemProperties.set(Enable16kUtils.DEV_OPTION_PROPERTY, "true");
         assertThat(mController.isAvailable()).isEqualTo(true);
     }