Why can't Xiaomi mobile phone WeChat be opened?

There are many reasons, and it is suggested to investigate them one by one according to the following methods:

It is recommended to set-Application Manager-All-WeChat-try to clear the data.

2. It is recommended to uninstall and reinstall the software, or try to replace it with another version of the installation.

3. Check whether software programs such as mobile phone security guards are installed in the mobile phone. If there is an attempt to uninstall, please check whether the installed third-party software is incompatible or caused by software restrictions.

4. Take out the external SD card for testing.