AT&T iPhone not getting Internet?

I just got an iPhone 4S with a 2 year contract with AT&T in June. It runs on 4G and has worked perfectly up until this past monday. When I was in school it just kept loading and loading and eating up my battery, it never connected. Over the next few days, my service started to drop also. The 4G symbol in the top left disappears on and off frequently and sometimes it just says "No Service".

I talked with my friends who have AT&T iPhones and they said nothing was wrong with their phones in the school. Plus my phone had been working inside the school perfectly up until this week, so its not the school.

I went into the AT&T store and the man did a hard reset on it. I left the store and it worked until the next day when I went back to school. He gave me a new SIM card so I activated it with customer service last night. Once again it seemed to be working fine… Until I went to school today.

What is wrong? This is ridiculous that i pay $30 a month for internet and it won't even work and it's eating up my battery in just a few hours!

Can an iphone 4 still work perfectly functional after it dropping and cracking?

I'm buying my friends iphone 4 off him and he drooped it and the top front where the front camera is cracked kinda bad to where thethe actualt camera andcracked hone speaker part is visibleit but he claims its still fully functional and I checked it out and it does truly look just fine and I plan on buying a replacement screen and changing it so its like its new i'm just a little skeptic abut it the phone is only a few months old so I think it Should be totally fine when I replace the screen. What do you think?

What's costing me money on my Iphone?

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How to stop my iPhone from connecting to a Wi-Fi?

Other than turn off Wi-Fi, I would like to know how to stop my Wi-Fi from connecting to the internet. I have Wi-Fi at my house but when I got to my room I loose the signal and pick up another signal from across the street and that is a week signal and it slows down my iPhone. I don't want to cut off the Wi-Fi because it is tedious just to turn off and as I frequently go back and forth.

Iphone 4 battery drains too fast due to plugging and unplugging alot?

My iphone is still in awesome condition! Sometimes the screen would get really hot when i'm charging it and i don't even know why. And because of accidents or just my idiot friends ( just playing) my phone gets plugged and unplugged a lot.sometimes its not because of accidents, but because of the wall plug that makes it unplug and plug so rapidly… And now if i use my iphone my battery drains pretty fast.can't even last a whole day even if i barely use it. Any help please? I wanna keep this phone in good condition until i get a new iphone 5. Even with the new phone i need to be careful.

IPhone still in rice not working?

So… When my iPhone fell in water I put it in rice for 48 hours… And it's still not working I think it's because I tried to turn it on after it fell in water… Can it still be fixed I just took it out of the rice and put it under the cable because it's hot there. Can it be fixed? Any other ideas?