reason
1. The router is faulty. Please check whether the computer with a wired connection can be used normally, because sometimes even if the WIFI signal is displayed, it does not mean that the broadband is normal. If the wired computer is no longer available, re-check whether the broadband line is faulty.
2. If the mobile phone is not compatible with the wifi network, it is recommended to reset the wifi network and modify the encryption method and try again.
3, or the WiFi password has been changed, and the computer has used the new password to connect, but the phone has not.