Well, guys and gals!,, I bought my 3GS on launch day! About 7 pm.. got it home sync it, and all was fine! made, and received a few phone calls, sent and received a few text! I never played with an app, or messed with any of the new features,, It was getting very hot, during texting! In the middle of a text, it lost all service... Not At&t logo, no wifi logo nothing!... And then the battery went down very quick! I tried charging it.. restore, and nothing! The next morning, I got it to charge up to about 30% on the way to exchange it, but still no service.. They gave me a new one, with no problem,, but the new one has has a hot battery, and drained very fast, until I restored it as a new phone.. and it has worked great since! HTH...