My iPhone 4s internet only works on Wi-Fi?

The only time I can use the internet on my iPhone is when I'm on Wi-Fi. Whenever I try to use the internet with 3G it doesn't load at all. I have a data plan and when I check my usage online it says I haven't used any data. I'm not sure what is going on. And Siri doesn't work well either on 3G even when I'm not asking it to do anything involving the internet

Your iPhone is defected you need a new one

If you want info about your phone check out unlockatt.com it really helps plus it shows you your warranty in case you want to return it!

  • Youtube app only works on iPhone 4S when Wi-Fi is turned OFF? Can someone please explain this to me? It's usually the other way around for everything else on my phone but with this new Youtube app I can only watch videos using 3G. I checked to make sure it isn't a problem with my internet and it isn't. I really hope someone can help me with this because it uses up my data plan when I'd rather just use my Wi-Fi.
  • Verizon iPhone 4 stuck on shutter after screen replacement? Only rear camera works? After replacing a cracked screen on a verizon iphone 4 the frontfacing camera is stuck on shutter, while the rear camera only works sometimes… I have tried checking the connections, as well resetting everything and even restoring. I have heard about possibly jumping something on the logic board but can't find where, a picture would be great.
  • Verizon iphone 4 only works when plugged in? My girlfriends verizon iphone 4 only works when it is plugged in. The battery is new because we had it replaced recently… The only thing is that it only comes on when it is plugged in. Can it be something loose? Because it was taken apart before?
  • My iphone speaker only works when i plug in my headsets and unplug them? When i try to use my speaker i have to plug in my headsets then unplug them to get the music to play does anyone have a fix for this?