Ok...I've had my S3 since late August and have always been able to connect to the internet. No problems with staying connected either. The problem is that no other devices can use the internet at my house when I'm connected. If I'm using wifi on my phone every other device that is connected loses wifi connection and won't reestablish until after I turn wifi off. I've turned wifi off on my phone and connected every wifi enabled device in the house and they all work fine so I can rule out the router. Its my freaking phone for some reason. For example I turn on wifi last weekend just to see if the problem went away on it is own. So my son is watching netflix on the 360 and all of a sudden netflix loses connection. I think maybe its a coincidence, turn off wifi on my phone and the 360 connects again. Turn on wifi on my phone, the 360 loses connection. Also, its a vizio dual band router. And I have tried switching band on the phone but that doesn't work. On a side note I haven't tried using someone elses wifi to try and see if I can replicate the issue.