How to solve the black screen of nut Pro mobile phone

Mobile phones have black screen, flash screen, flower screen and white screen. Suggestion:

1. Click the Back key to try to exit the software. Exit and re-enter if possible.

2. If you can't quit the software, it is recommended to restart the machine: press and hold the power button and turn down the volume button for more than 7 seconds at the same time to restart the equipment;

3. If the screen still appears after opening the software again, this situation may be related to the software used. If you download the software yourself, it is recommended to uninstall the software before downloading.

4. If you have your own system software, it is recommended to try to update the version of the mobile phone system: Please go to Settings-About the mobile phone (about the device)-Software update (system update)-Update (please back up the data in the device before upgrading).

5. If it is the latest version, please back up the data (contacts, information, pictures, etc. ) and then try to restore the factory settings.

If the problem still exists, it is recommended to take the purchase invoice, maintenance card and mobile phone to the local mobile phone purchase office for maintenance or spend money nearby for maintenance.