No sound from my phone.

1. Find and tap [Settings] → [Support].
2. Tap (Tests icon), and then choose a [Microphone and speakers] from the list.
3. Follow the instructions to carry out the test.

1. While the device is turned on, long press the power key.
2. In the dialog that appears, touch and hold [Power off], then tap [OK] if prompted.
3. Wait for the device to restart in Safe mode.

Note

To exit Safe mode, restart the device.

Note

Only downloaded apps can be fully uninstalled.

1. Touch and hold the app icon until the device vibrates.
2. In the menu that opens, tap [App info] → [UNINSTALL].

Note

Only downloaded apps can be fully uninstalled.

1. Touch and hold the app icon until the device vibrates.
2. In the menu that opens, tap (Uninstall app icon) → OK.

1. Unlock the screen of your device and connect your device to the computer using a USB cable.
2. On the computer, select which files to back up, then copy and paste or drag and drop the files to a location on your PC.

1. Find and tap Settings → System → Backup. You may find the item under Advanced.
2. Tap the switch to enable the function. Your app data, device settings, and call history will be backed up automatically.

Note

You can also enable backup from the settings menu in Google Drive. You can synchronize your app data, device settings, and call history automatically by logging in to the Google account used to synchronize data on your old device. When you power on your new device for the first time, log in to the Google account during the setup wizard.

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 options]. You may find the item under [Advanced].
3. Tap [Erase all data (factory reset)] → [Erase all data].
4. If required, draw your screen unlock pattern or enter your screen unlock password or PIN to continue.
5. To confirm, tap [Erase all data].

Hint

Your device does not revert to an earlier software version of Android when you 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 options]. You may find the item under [Advanced].
3. Tap [Erase all data (factory 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].

Hint

Your device does not revert to an earlier software version of Android when you 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].

Hint

Your device does not revert to an earlier software version of Android when you perform a factory data reset.