Why can't I change my personal signature on QQ? I explained it to myself and kept saying that the revision failed.

There are many reasons for this.

The specific solutions are as follows:

First of all, check whether it is caused by network conditions. You can use your mobile phone to open the webpage at will and see if it can load smoothly. If it is not loaded, it can be judged that it is a network problem. It is suggested to operate in a place with good signal, or change to a place with good network environment.

It may be a bug in the software itself. It is suggested to restart the mobile phone in the background or turn off QQ. Log in to QQ again to see if the problem has been solved.

It may be the hardware problem of the mobile phone itself, and the mobile phone updates quickly. It may be that the version of your mobile phone processor is too low and the running space is small, which makes the mobile phone card inoperable. If this is the case, it is recommended to replace the better mobile phone equipment.

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