Why did I delete a contact and restart it again?

1. Mainly because of Xiaomi mobile phones.

The automatic sync function is enabled, that is, the contact information on the phone has been synced and backed up to Xiaomi Cloud services.

So when the user deletes the contact on the mobile phone, the Xiaomi cloud service will use the automatic synchronization function to transfer the cloud server.

The contacts on the backup are synced to the phone, so the deleted contacts are restored to the phone.

2. Solution:

1) You can open the browser of your computer, visit the official website of Xiaomi Cloud Service, enter your Mi account and password to log in, and after logging in, find your address book, find the contact information you need to delete, and delete it.

2) You can turn off the automatic sync function of your phone, method: open your phone's settings - more advanced settings - sync - turn on automatic sync - click the small slider to turn it off.

Hello, it may be that there are some apps in your system that interfere with the normal operation of the system, especially some programs that have gained root privileges, so for the sake of your phone's system security, please do not use root privileges at will. It is recommended that you back up your data, enter Recovery to clear all data (turn off, press and hold the volume up + power button to enter recovery), upgrade your phone to the latest development version of the system by wire brush, and do not install applications that require root permission for the time being, and see if it can be restored to normal.

Welcome to ask questions on the Know Xiaomi Enterprise Platform.

Is it QQ, put it in the blacklist first, and then delete it.

Because your contacts are synced to the network. It's your Xiaomi, or Google. These networks can be updated every 3 days at the earliest.

So after you delete it, they will sometimes sync it to your phone again. It is recommended that you use your computer to surf the Internet and delete your contacts from the Internet. This way the sync won't go to your phone.

It is recommended that you back up your important data first, and then enter Recovery to empty all data, and do not restore data temporarily after booting up, and see if it can solve the problem. (Backup: Security Center - Backup, back up the data you need.)

Clear data: In the shutdown state, press and hold the volume plus button and the shutdown button, and let go when the boot screen appears, and you can enter recovery. Go to Recovery >Chinese >> Clear Data >> Erase all data).

Hello: According to your description, please:

1.It is recommended to go to Settings - Application Manager - All - Contacts - Clear Data Attempt.

2.Whether you have Mobile Security Guard software or some third-party software programs installed on your phone, if so, please try to uninstall it.

3.It is recommended that you restore the machine to factory settings, and the operation is as follows: Settings-Reset-Factory Reset (but since this machine will lose all the data in the phone if you restore the factory settings, it is recommended that you back up important data such as **Ben,**, **, etc.) in advance).

4.It is recommended that you try a firmware upgrade. If the problem persists through the above methods, please bring the purchase invoice, repair card and machine to the Samsung service center, and the engineer will check the machine and deal with it.