The first time you use an app, and sometimes when you install or update it, you are asked to grant the app permission to access certain data and phone features.

You can adjust these permissions any time.

To adjust permissions by app:

1. Touch & hold the app icon, then touch .
2. Touch Permissions.

3. Turn each permission on or off as needed.

   TipTo see how the app uses each permission, touch > All permissions.

You can also review each feature and adjust which apps have permission.

Performance Optimization boosts the app you’re using by restricting other apps from running in the background, which may cause some notifications to be postponed or not delivered.

To allow apps to run in the background, you can turn on exceptions:

1. Go to Settings > Performance Optimization.
2. For apps you want to run in the background, turn it on .

Issues such as apps crashing, unexpected reboots, or fast battery drain could be caused by an app you intalled. Use safe mode to start your phone with only the original software and apps. If the issues go away in safe mode, the problem is probably from an app you downloaded.

To restart in safe mode:

1. Press & hold the Power button.

2. Touch & hold Power off. Then touch OK to restart in safe mode.

   When it restarts, you'll see Safe mode across the bottom of the home screen, and all widgets and third-party apps will be disabled.

3. Use your phone and see if the problem has gone away. Remember, you won’t be able to use any downloaded apps.

If the problem goes away:

1. To exit safe mode, restart your phone.
2. One by one, uninstall recently downloaded apps. After each removal, restart your phone. See whether removing that app solved the problem.
3. Once you delete the problematic app, you can restore the other apps you removed during testing.

If the problem doesn't go away: Try these troubleshooting steps for phone performance issues.

Press & hold the Power button, then touch Restart .

Or, hold the Power button for about 30 seconds, or until your phone restarts.

Clearing the cache and data can free up phone memory, improve performance, and fix some problems with apps and web pages.

1. Touch & hold the app icon, then touch .

2. Do one of the following:

   • To free up space by removing temporary files, touch Storage > Clear cache. Over time, the cache builds up again, so repeat if a problem occurs.
   • If problems still occur, then delete all data saved in the app by touching Storage > Clear storage. Be careful - there’s no way to undo this.

Force stop an app only if it seems to be causing a problem. To completely shut down an app, including any background services:

1. Touch & hold the app icon, then touch .
2. Touch Force stop.

You can delete (uninstall) apps that you downloaded. For many preloaded apps, you can disable but not delete them.

1. Touch & hold the app's icon.

2. Do one of the following:

   • Drag the icon up and drop it on . This deletes the app and frees storage space.
   • If you don't see a delete option, touch & hold the app icon, then touch > Disable.

If you are the owner of the phone and shared it with users or guests, you can uninstall apps they installed. Although their apps don’t appear in your app tray or on your home screen, they do reduce available storage space.

1. Go to Settings > Apps & notifications > App info.

   Apps installed by others show the message Not installed for this user.

2. Touch the app name.
3. Touch > Uninstall for all users.

You can automatically back up the following items to your Google account:

• Apps and app data
• Call history
• Contacts
• Phone settings (including Wi-Fi passwords and permissions)
• Photos and videos (synced to your Google Photos library, not to Google Drive)
• SMS text messages (if using Messages)

Not all apps back up data automatically. Check with the app developer.

To automatically back up to Google Drive:

1. Go to Settings > System.
2. Touch Backup.
3. Check that Back up to Google Drive is on . If needed, turn it on.
4. If you have multiple Google accounts, touch Account to select an account.
5. Follow the onscreen instructions.

To back up other files that aren't automatically backed up, like attachments or downloads:

1. Open the Drive app.
2. Touch .
3. Touch Upload, then choose the files or folder to upload.