My Galaxy S7 won't connect to any Wi-Fi at school, home, or work. Naturally it worked fine when I went into the AT&T store so they couldn't diagnose the problem. The WiFi will turn on, but when I click on the WiFi to select which network to connect to, it will not bring up the box allowing you do to that. Instead it give me a black screen and freeze up.
Read more: Galaxy S7 won't connect to Wifi