Cell phones can't make calls and send text messages.

If you use a vivo phone, you can't make a phone call. The treatment method is as follows:

1. Since all operators have started to port numbers to the network, if the short number trunking service (abbreviated as short number service) has been opened on the mobile phone, other users in the trunking network may not be able to dial the short number after port numbers are transferred to other operators. I suggest you inform your family and friends to call;

2. Enter Settings-Applications and Permissions-System Application Settings to confirm whether call barring and fixed dialing are set;

3. Restart the phone and redial;

4. Confirm whether the mobile phone is in arrears;

5. Try to change the environment or time period (that is, try to change a place or time period) to eliminate the reasons for network signals;

6. Try to replace the SIM card;

7. The new version of the system improves the compatibility and stability, and optimizes the performance. Please go to Settings-System Upgrade (some models are Settings-My Device -iQOOUI Version) to check the system version information. If it is not the latest version, I suggest you upgrade your experience.

8. You can restore all settings in Phone Settings-System Management/More Settings-Backup and Reset/Restore Factory Settings. This operation will cause the logged-in third-party software account to log in again, but it will not clear the photos, videos and other files stored in the mobile phone. Before restoring all settings, please ensure that the use of some third-party software will not be affected. In order to avoid data loss caused by abnormal operation, it is recommended to back up the important data of the mobile phone first.

If the above methods are not improved, you can take your mobile phone and valid purchase voucher to the service center for testing and processing, pay attention to the official WeChat account "vivo" or "vivo customer service" to check the address and telephone number of the service center, and suggest calling before you go to ensure that a staff member receives you before you go to avoid wasting precious time.