Reasons for the iPhone 12 Wi-Fi connection failure are:
< br >
1, the WiFi itself is a problem, the WiFi may not be connected properly, resulting in no Internet access.
< br >
2, router problems, the router may overheat or damage.
< br >
3, may be broadband arrears, resulting in no Internet access.
< br >
4, WiFi name contains Chinese, resulting in some mobile phones can not connect to the Internet.
< br >
5, mobile phone system problems, there may be a problem with the system, resulting in connection with the WiFi but can not access the Internet.