This is my first Samsung phone ever. I have always purchased Nokia, and I have been with Cingular/AT&T; from the start. I never had a problem with my Nokia phones, but I wanted this one because of its form factor - very, very thin and light.I don't use the data/text features, but I do use the Bluetooth sometimes, and it pairs nicely with my cheap Samsung WEP170 ear bud. The camera is great, even though some pictures are blurry in low light (no flash). it does get a weaker signal than my wife's Motorola Razr V3 - she will have full signal or at least 2 bars all the time, and I sometimes lose signal altogether while sitting next to her. Hers will ring in her huge purse and inside a case, and mine will be in my cotton shirt's pocket and not work. We use the same service (and have a family plan with even the same features), so it appears to just be a weaker phone. As long as I don't get off the beaten path too far, I get decent reception.All was well until two days ago (had the phone for exactly 2 months). I heard it make the "whooosh" noise of the AT&T; splash at startup, and the phone had rebooted itself in my shirt pocket and was showing my welcome screen. I thought AT&T; had done a software update, or something, so I thought nothing of it. The phone is brand new, not even scratched, so I figured it surely was something simple and nothing wrong. Then, it started rebooting during calls, dropping the person I was talking to silently, and whooshing in my ear. It has done it about 15 times since that first time (two days ago), and AT&T; has no answers. It even turned off silently and stayed off one time in my pocket, making me miss calls until I realized it wasn't on. I keep the keypad locked at all times when not using it, so I know it is software-related. AT&T; wants me to take it up with Samsung or they will send me a refurbished unit for my new phone (no thanks). I called Samsung, and they gave me an RMA number and an address, so I will send it to them and see what happens. Meanwhile, I have no phone to use.I would have given it a somewhat glowing review just 3 days ago, but I can't help but wish I had my Nokia back as I sit here with no phone at all.