Wechat black screen will not receive information.

The reason is that you didn't turn on the function of "receiving new message notification" in WeChat, so even if there is news on WeChat, the mobile phone will not be reminded by a black screen.

The solution is as follows:

1. Open WeChat and click the "I" icon in the lower right corner.

2. Select "Settings".

3. Select "New Message Alert" in "Settings".

4. Select "Receive new message notification" in "New message reminder" to receive the message even if the mobile phone has a black screen.

Ps: You can also turn on "Receive Audio-Video Chat Invitation Notice" and "Video Chat, Voice Chat Ringtone" to let your friends receive short messages when they want to video chat or voice chat with you.