1. Under the Mobile Phone standby page, click "Application".
2. Slide the phone screen and click "Set".
3. Click "General".
4. Click "Application Manager".
5. Slide the mobile screen to the left and click "All".
6. Click on the flash-back application, for example, "Love Games".
Please back up the phone data (contact, SMS, pictures, etc.), and then restore the factory settings. Since the phone's return to factory settings will erase all the data in the phone's internal storage device, including short messages, contacts, downloaded applications, and so on. Therefore, before you make the phone restore factory settings, please back up the useful data in the phone to avoid loss. To restore the factory settings, follow these steps:
1. Under the Mobile Phone standby page, click "Application".
2. Slide the phone screen and click "Set".
3. Click "General".
4. Click "Reset".
5. Click "Restore Factory Setting".
6. Click "Reset Device".
7. Click "Delete All".
After the completion of the above operation, the phone will be automatically restarted after the successful restoration of the factory settings.
Step 3. Connect the network and upgrade your phone to the latest version.
1. Under the Mobile Phone standby page, click "Application".
2. Slide the phone screen and click "Set".
4. Slide up the phone screen and click on the device.
5. Click on "System Update".
6. Click "Update".
Note: Mobile upgrades will erase data from your phone's internal storage devices, including SMS, contacts, downloaded applications, and so on. Therefore, before you do the mobile phone upgrade, please back up the useful data in the phone to avoid loss. After reading the disclaimer, click OK to complete the update.