Wechat scan code to pay for the black screen, just turn it off and then turn it on.

The reason for this is the following：

1, WeChat function is abnormal, clear the cache or download the software again.

2. It may be that WeChat and camera are incompatible, and the solution is as follows:

Step 1: Click the Settings button on the phone desktop.

The second step is to find the privacy settings.

Step 3, find the camera option under privacy settings.

Step 4: Open the permission of WeChat to use the camera.

Step 5: Reopen the WeChat scanning QR code page successfully.