1. The "data synchronization" function of contacts has been turned on in the cloud service APP. If it is turned on, you can check whether there is information in the cloud.
① Visit the webpage link of the cloud service webpage, log in to the vivo account, and click "Contact" to see if there is any information in it;
②? On the cloud service contact page, click "Recycle Bin" to see if there is any data in it. If yes, you can restore the data to the cloud and synchronize it to your mobile phone (cloud service APP-data synchronization-contacts-turn off synchronization and turn it on again).
Note: Cloud Service-Contacts-Recycle Bin? Contacts in will not be automatically cleared, and they will only be deleted if you delete them yourself.
2. If the contact data has been exported, you can try to import and restore it.
You can try importing contacts into your phone. The operation method is: open the contact APP-three points in the upper right corner-contact settings-import/export-import from storage device.
Note: If "vCard file not found in storage device" is displayed during import, it means that the contact has not been exported before, and the data file (vCard file) of the contact does not exist in the mobile phone storage.
3. You can enter vivo official website-My-Online Customer Service-Enter labor and consult online customer service feedback.