I have rest my phone and everything and I am still unable to connect to wifi. I entered my passcode at my apartment and it didn't work and now I am at my university and I have entered my secure passcode and it is still not working. Can you please help me with this?
I was experiencing the same problem. Tried numerous fixes. What finally worked was I went into Settings>General>About; recorded my Wi-Fi Address, and manually entered it into my router as an recognized/allowed device. Selected by network, entered the password on the iPhone, and Bingo! I was in!!