I bought the galaxy s3 garnet red with at&t (I'm new to at&t also). I have a problem with the battery. the cell standby is draining 84% of my battery. while the others are under 10%. i don't like the phone being dead before i get a chance to even use it. is there anyone out there that can help me figure out what i can do so my battery wont die within 5 hrs of cell standby time??? I bought it on July 26th. first couple weeks were great, then after that the phone wont last at all. any help would be greatly appreciated!!