Why did Xiaomi's phone contact records and other information disappear after he quit his account?

Because when you cancel your account, you click Select to clear the information on your phone. Log in to your account again and synchronize.

Millet cloud service opening method:

1, open the millet cloud service software, and you can find the application cloud backup (that is, the function of app cloud backup) after entering.

2. Click the application cloud backup to enter the setting interface, and the user can turn on or off the application cloud backup function according to actual needs. If enabled, the local application can be synchronized to the server of millet cloud Service for backup.