1, the phone memory is not enough, just empty the software data directly. Remember that only unused software data will be cleared when cleaning, and useful software data will not be found after cleaning.
2. Due to network reasons, please check whether the Internet environment of mobile phone is normal. If not, try to switch networks. If it doesn't work, turn off the phone and restart it.
3. There is something wrong with the mobile phone version. It is recommended to uninstall the reinstalled software and try to download the latest version of the software in official website.