Recently the internet at my dorm has been acting up, and when it returned to normal my iPhone suddenly started behaving weirdly. I get a login-page when connecting to the wifi, instead of the usual auto-join, and instead of done there's only a cancel button. If I press the cancel button it will ask continue without internet/join other network. When I continue "without internet" the phone will connect to the wifi AND the internet connection is working perfectly fine. Why is it doing this? I tried restarting my router... but that didn't do anything. Not that I expected anything to happen.