1. If the screen display of your mobile phone suddenly flashes.
It may be that human static electricity interferes with the display signal when the environment is dry. The mobile phone system has automatic error correction function, and the display will return to normal within a few seconds. If it doesn't return to normal, please try to restart the phone to restore.
2. If your phone is using an application, the splash screen will only appear.
This may be an application compatibility issue. It is recommended that you download related applications in Huawei application market, or replace them with other applications of the same type.
If the above methods fail to solve your problem, please back up your information in advance (WeChat /QQ and other applications need to be backed up separately), and bring relevant purchase vouchers to the nearby Huawei customer service center for maintenance.