There are lines on the display, what can I do?

Android 9 or higher

To disable Developer options

1. Find and tap Settings → System → (Advanced) → Developer options.
2. Drag the slider beside On to the left.

Android 8.x

To disable Developer options

1. Find and tap Settings → System → Developer options.
2. Drag the slider beside On to the left.

To check if any downloaded applications are causing the problem. Downloaded applications can cause your device to behave unexpectedly or affect its performance. In safe mode, your device only starts with software and applications that were already installed when you purchased your device. If the device’s performance improves in safe mode, it’s likely that one or more of your post-purchase downloaded applications are affecting the device negatively.

You can exit safe mode and restart the device to uninstall the application or applications that you suspect are causing the problem. If the problem is recent and you're not sure which application is causing the problem, you can start by uninstalling the most recently downloaded application.

Enabling safe mode

To enable Safe mode

1. The steps will depend on your menu options:
   • While the device is powered on, press and hold down the power button.
   • While the device is powered on, press the power button and volume up button at the same time.
2. In the pop-up menu, touch Power → Power Off or touch and hold Power off until the Reboot to Safe mode message appears.
3. Tap OK to restart in Safe mode.

Tip: To watch a video of how to enable and exit Safe mode, tap or click here.

Exiting safe mode

To exit safe mode

• When in safe mode, restart the phone.

Always back up all personal data before performing a factory data reset. All data in the internal memory is overwritten during a factory data reset. Content on an external SD card is kept.

Android 10 or higher

To perform a factory data reset

1. Find and tap Settings → System → (Advanced) → Reset options → Erase all data (factory reset) → Delete all data.
2. If required, draw your screen unlock pattern or enter your screen unlock password or PIN to continue.
3. Tap Delete all data.

Android 9

To perform a factory data reset

1. Find and tap Settings → System → Advanced → Reset options → Erase all data (factory reset) → RESET PHONE.
2. If required, draw your screen unlock pattern or enter your screen unlock password or PIN to continue.
3. Tap ERASE EVERYTHING.

Android 8.x

To perform a factory data reset

Note! To avoid permanent damage to your device, do not interrupt a factory data reset procedure.

1. Back up any important data that is saved on the internal memory of your device to a memory card or other non-internal memory. If you have any encrypted files stored on an SD card, you should also remove the encryption to ensure you can still access them after the reset.
2. Find and tap Settings → System → Reset.
3. Tap Factory data reset → Reset phone.
4. If required, draw your screen unlock pattern or enter your screen unlock password or PIN to continue.
5. To confirm, tap Erase everything.

Tip: To watch a video of how to do a factory data reset, tap or click here.