As far as a cell phones go, beware of bad esn cards. Always check the numbers on the back, inside of the phone. Luckily the pawn shop I used let me return it right away, because of the bad esn. To check the esn card, call a sprint store or the carrier, and let them know you bought or are buyiny a phone and need to check the esn card. I didn't think it was a problem, but sometimes little stores don't check first.
Advice of the day! Always check an esn number before buying a phone. Also, always have insurance on you're phone or tablet.
Positive of the day: The galaxy tab 3 is shiney and will get the job done until my insurance sends me a new gallaxy s3 :)