My cousin's phone's wifi suddenly stopped working and wouldn't connect. I "forgot" the connection and tried reentering it, but the "connect" button is gray and won't let me connect again. And it's not just with one wifi connection, it's like that with all of them. I tried restarting and rebooting the phone, but nothing seems to be working. And I've been using the thing for an hour trying to figure out what went wrong, but I can't find anything that would be related to that. Any help will be appreciated.