1. It may be caused by poor network. By restarting the phone, move to a good network area and log in and operate this action again.

2. If it fails, it may be caused by the busy Tencent system. You can try the operation again later.

If the above can't be solved, it may be caused by an error in the mobile phone software. You can go to official website to download the QQ installation package and install the client, and then do the operation.

QQ signature refers to the signature that people can set in the instant messaging software QQ, which can show their personality. QQ signature is a function launched by Tencent in 2005, which is welcomed by QQ enthusiasts.

QQ signature can be divided into Lian Bi signature, fun signature, official signature and business signature.