Huawei's mobile phone took a video and took a black screen for a while. There are two small arrows next to it.

Huawei's mobile phone only records sound, and the screen is black. You can enter the phone setting options first, and then click "Applications and Notifications" to enter the application management page; Then find the "More" option, click "Show System Progress", click "Screen Recording/Gallery" option, enter "Save", click "Clear Cache" and try again.

If the recording screen still shows a black screen after clearing the cache, you can enter Huawei Mobile Manager, click the "Start Management" option, turn on the screen recording protection, and then try to record the screen. If the recording screen is still blank, you can restart the phone, release all running memory, and then continue to try. You can also call Huawei's official customer service number, connect to the manual service according to the voice prompt, explain the problem and seek the answer, and then operate according to the staff's answer. If the recording screen still shows a black screen after operation, you can take your mobile phone to the official after-sales center of Huawei brand to explain the problem and ask professionals to check and repair it.