How to solve the empty number problem of vivo mobile phone?

Vivo mobile phones can refer to the following processing methods:

1, unable to dial cornet, prompting that the number is empty, which may be beyond the specified area when using cornet. It is recommended to dial the ordinary 1 1 digit telephone number;

2. Check whether the signal is good. If it is in a closed environment, such as basement and elevator, the signal difference may make it impossible to make a phone call;

3. Try to switch flight modes, re-register the network and try again;

4. Unable to dial the fixed number, indicating that the user is busy: it may be that the other party has set your number as a blacklist. I suggest you try other ways to contact the other party, and you can dial normally after removing the blacklist;

5. Please confirm with the operator's customer service whether the mobile phone number is in arrears;

6. At present, operators have shut down the 2G/3G networks in some areas. Please contact the operator to open the VoLTE HD calling service and try it out. When the VoLTE function is enabled, the HD icon will be displayed in the signal bar.

7. Confirm whether the calling card has call barring service, and some operators support call barring service. If the calling card has been opened, some or all calls will be restricted. Please consult the operator for details.

8. Upgrade the system or reset the network settings. Resetting the network settings will delete and disconnect the connection and pairing records of WLAN, mobile data network, Bluetooth and other networks. You can enter the settings of the mobile phone-system management-backup and reset-reset the network settings-enter the screen lock password. Note: Enter "Cloud Service"-Device Cloud Backup-Backup Data Type-Open "System Data"-Return to the previous page-Back up immediately and back up some system setting data. ;

9. Try to replace the SIM card.

10. If the above methods are not helpful for recovery, it is recommended to send the mobile phone to the customer service center, and the professional technicians will serve you enthusiastically. Enter the browser to search for vivo official website-services-service centers-view all-select provinces and cities to query the address and contact information of local service centers.