Why can't the mobile phone search for wifi signal?

If you use a vivo phone, you can't find a WiFi network, which may be caused by router settings, frequency band mismatch between the phone and the router, etc. Please refer to the following methods for troubleshooting:

1. The router hides the WiFi name.

Maybe the router hides the WiFi name (hidden SSID). Please get the name and password of WiFi directly and add the network manually, or turn off the hidden SSID function of the router.

2. Check whether the WiFi bands supported by the mobile phone and the router match.

Check the WiFi bands supported by the mobile phone, and then confirm whether the searched WiFi bands are consistent with those supported by the mobile phone. If the phone only supports 2.4GHz WiFi, you cannot search for 5GHz WiFi. You can set the router to the 2.4GHz band and try again. If you don't know how to do this, please contact the router administrator.

3. Connect other WiFi comparison tests

Connect your phone to another WiFi to determine whether you can search for and connect to WiFi. If other WiFi is normal, it means the current router. It is recommended to contact the router administrator. If you can't search for all WiFi, it is recommended to bring your mobile phone and purchase voucher to vivo customer service center for testing.

4. Reset network settings

Resetting network settings will delete the connection records of WLAN, mobile data network, Bluetooth and other networks. You can enter Settings-System Management-Backup and Reset-Reset Network Settings-Reset Settings-Follow the prompts (you need to select the corresponding SIM card for dual cards).

note:

1, enter the cloud service-data synchronization-turn on WLAN, Bluetooth, etc. Synchronize data to the cloud service.

2. 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.

5. Restore all settings

You can enter Settings-System Management/More Settings-Backup and Reset/Restore Factory Settings-Restore All Settings-Restore, Restore Settings Options. This operation will not delete files or software, but will cancel the password and restore all settings, including the set wallpaper, unlocking method, WiFi, default opening program, etc.

note:

Enter cloud service-device cloud backup-backup data type-system data-return-immediately back up some backup system settings and desktop layout;

Cloud service-data synchronization-turn on WLAN and Bluetooth to synchronize data to cloud service.

6, service center testing

If the above methods fail to solve the problem, please back up the mobile phone data in advance and take the mobile phone and purchase voucher to vivo customer service center for testing; Go to official website /vivo Mall APP-My-outlet to inquire or click the webpage link, and select the current city to get the address and contact information of the service center. It is recommended to call in advance before going to avoid empty running, plan your trip reasonably and travel safely.