Also if you're having problems, send it in to Samsung. They will give you a choice: 1. they will fix yours, 2. they will replace it, or 3. they will let you upgrade with little to no charge to you!!!
This phone is crap! (not bashing the seller) but if you're going to bid on it you should know it will restart on itself not send text messages and just turn off completely by it's self I'm tell you from experience I've had this same phone for over a year now and it is not very reliable. and I am not the only one having the problems.
I'm sorry, but yes it is. I was there when my friend bought them. All you have to do is Google it. I put the model number in an earlier post. Anyway, it does run Android apps.
It's AT&T. You can see it on the top of the phone in the picture. Like I said, it's brand new and never been used. It also has a leather case that will be sent out too.