There is no signal on the mobile phone, but you can make a phone call. What happened?

If you use a vivo phone, please refer to the following:

1, the reason of poor network quality

Compared with the mobile phones using the same carrier card around, if the same phenomenon appears, it may be caused by the poor network quality of the current location.

2, check the phone settings

Please open the phone shortcut bar (slide down at the top or slide up at the bottom) to see if the data network is open.

3. Confirm the status of the mobile phone card

Please ensure that the phone bill balance of the mobile phone card is sufficient. If it is overdue, please restart the phone after the recharge is successful. Please check with the operator whether the traffic package meets the traffic limit standard. If necessary, you can replace the SIM card that can surf the Internet normally to confirm.

Step 4 check the cell phone signal

If the mobile phone uses a metal, magnetic protective case or bracket, such a protective case and bracket have an impact on the mobile phone signal. I suggest you take it off and try it.

5. Check the network settings

Please go to mobile phone settings-Mobile Network/Dual Card and Mobile Network-Mobile/Unicom/Telecom/Radio and Television-Access Point (APN) and click "Reset to Default Settings" to restart the phone.

6. Reset the network settings. This operation will delete and disconnect the connection and pairing records of WLAN, mobile data network, Bluetooth and other networks. Go to Settings-System Management-Backup and Reset-Reset Network Settings-Enter the screen lock password.

7. You can enter Settings-System Management-Backup and Reset-Restore All Settings-Restore and Restore Settings. This operation will not delete the media file, but will cancel the password and restore all settings, including the set wallpaper, unlocking method, WiFi, default opening program, etc. Logged-in software accounts also need to log in again.

Note: Enter Cloud Service-Device Cloud Backup-Backup Data Type-System Data-Back-Back up some backup system settings and desktop layout immediately; Cloud service-data synchronization-turn on WLAN and Bluetooth to synchronize data to cloud service.