1. If the screen turns gray, you can turn on e-book mode. When opened, the screen will turn gray. If you don't need it, you can turn it off. Closing mode: enter Settings, search, click E-book mode, and close E-book mode.
Warm reminder: If the e-book mode is not found, your mobile phone does not support this function.
2. If the screen is grayed out, you may have set the sleep time/stop time for the healthy use of the mobile phone and turned on the switch that grays out the screen. When the limited time is reached, the screen will turn gray and the application icon on the desktop will turn dark. It is recommended that you turn off this feature. Closing method:
Go to Settings > Healthy Use of Mobile Phone > Sleep Time/Stop Time, and turn off the screen graying switch.
3. If the above troubleshooting still can't solve your problem, you can try to restore all the settings of your mobile phone.
If the problem persists, it may be the screen itself. Please back up important data in advance (QQ, WeChat and other third-party applications need to be backed up separately), and bring the purchase voucher to Huawei Customer Service Center for testing and processing.
The related links are as follows: For the price of maintenance spare parts, please consult Huawei Customer Service Center for repair service and reservation service.