Q:"Why my iPhone cannot connect to WiFi? When I go into the first settings page to see what's up, it will show that no WiFi is connected. I am sure Auto-Join is turned on and WiFi network has no arrears. I don't know how to solve it. Anyone have any ideas?" - Lays from Apple Community

Many Apple users are annoyed by this issue that iPhone keeps disconnecting from WiFi frequently. The most common way to solve it is to turn off the wireless network and turn it on again. However, this approach doesn't always work. You don't have to worry. The following 7 solutions are listed to help you fix the WiFi connection issues. You can choose one way to work for you.