What about Huawei mate30 black screen?

If you use a Huawei mobile phone with a black screen, please check it according to the following methods:

1 Force the phone to restart

Press and hold the power button 10 seconds or more (emui11.0&; HarmonyOS System Edition needs to hold down the volume down button and the power button at the same time (10 seconds or more) to restart the phone forcibly. If it cannot be restarted, please bring the purchase voucher to Huawei Customer Service Center for testing and processing. If it is possible to restart the recovery, it is suggested to continue the investigation according to the following scheme to avoid the phenomenon of jamming in use.

2 Check the following scenarios for faults.

(1) Black screen when calling. In order to increase the battery life of the mobile phone, if the distance sensor is blocked during the call, the mobile phone will automatically close the screen and reopen the screen after being far away.

(2) The mobile phone reaches the set sleep time. When the phone reaches the set sleep time, it will automatically close the screen and manually open the screen when re-entering.

(3) Using the mobile phone while charging may cause the mobile phone to overheat, leading to abnormality. I suggest you try to avoid playing with your mobile phone while charging.

3 Check the storage space of the mobile phone.

Please check the remaining storage space of your phone. If the storage space is less than 10%, the system performance will drop sharply. It is recommended that you try to ensure storage space, and it is recommended to reserve 20% space.

View mode: enter the phone settings, search for storage, and view the available space and remaining space. If the remaining space is relatively small, it is recommended to open the mobile phone housekeeper, choose cleaning acceleration, and clean up some unused files or applications.

4 Check whether incompatible applications are running.

(1) Running multiple applications in the background will take up too much memory or other resources, and the mobile phone may be overloaded. It is recommended that you try to avoid multiple applications running at the same time.

(2) Some third-party applications are incompatible with the system, which may cause the phone to crash and the system to get stuck, leading to a black screen or restart. We suggest that you enter the application market to download the latest version of the application and update your mobile phone system to the latest version.

If the system keeps reporting errors and can't boot normally, you can enter the safe mode, then enter the phone settings, search and enter the application management, and uninstall the previously installed software.

Enter and exit safe mode:

EMUI 9. 1 below: Press and hold the volume button at the same time during the boot process to complete the boot. When the words Safe Mode appear in the lower left corner of the screen, it means that the mobile phone has entered;

HarmonyOS system & ampEMUI 9. 1 and above: Press and hold the power button and the volume up button at the same time during startup until the recovery mode appears, and select the safe mode;

Mate30 Pro & ampMate30 RS: Press the power button for 5 consecutive times to enter after the mobile phone starts shaking;

Restart the phone to exit safe mode.

5 check whether the microSD card is installed.

Please check whether the problem still exists after plugging and unplugging the microSD card again. If the problem does not exist, it may be a poor contact. If the problem still exists, it may be that the microSD itself is damaged or incompatible with the mobile phone system. It is recommended to replace the high-quality microSD card.

6 Confirm whether the system files have been deleted by mistake.

When the system is running, the corresponding file can't be found, which leads to confusion and mobile phone failure. Try to restore the mobile phone system version through Huawei Mobile Assistant or eRecovery.

Tip: Restoring the version of mobile phone system through Huawei Mobile Assistant or eRecovery may result in the loss of mobile phone data. If the mobile phone can enter the system normally, please back up the data immediately (QQ, WeChat and other third-party applications need to be backed up separately).

7 Check the system version

I suggest you check whether the mobile phone system version is the latest version, go to Settings, search for software updates, and then click Check for updates. If not, it is recommended that you upgrade your system to the latest version.

Unofficial system will affect the stability of mobile phone, resulting in abnormal mobile phone. If you have installed an unofficial system, it is recommended that you bring the purchase voucher to Huawei Customer Service Center to restore or upgrade the system.

8 still can't solve it?

If the problem still exists, please bring your purchase voucher to Huawei Customer Service Center for testing and handling. At the same time, it is recommended that you do not click on unknown links when using mobile phones to prevent mobile phones from being infected with viruses.