vivo mobile phone prompt \"Wireless device is turned off\
1. Restart your phone and try it.
2, change the WiFi connection in another place or replace a SIM card to try.
3, it is recommended to enter the mobile phone Settings - system upgrade detection and update the mobile phone system.
4, if necessary, it is recommended to back up important data in the phone, and then enter the Settings - more Settings - to restore the phone to factory Settings.
5, Enter the vivo official website home page -- Service -- mobile phone upgrade -- search for the corresponding model click resources to download, download a good firmware package for brushing. If the above methods can not be solved, it is recommended to take the mobile phone to the vivo after-sales service center for testing. The address of vivo after-sales service center can be entered into vivo official website - service network query - select the province and city to query.