Bought my S3 last week and has been working great so far. I have wifi in the house which I use. When I go out I use data. I went to a place today that had wifi and signed in and was working fine. When I got home I could not connect to my wifi, only data so I thought I was locked in there because there was a guest password that was needed. I called and had asked them if they could shut down internet/wifi so maybe it would unlock me but it didn't.
Any suggestions on how to reconnect to my home wifi?