I have h2o wireless that uses at&t. I'm a fan of smaller phones that can fit in my pocket and those ones are hard to find nowadays!
Face recognition works pretty fast for sure and is nice to be able to unlock your phone like that. My one and only gripe.
X optical zoom is nice, the pen is worthless, the screen is fine. Dream phone is a nightmare. Samsung is on the wrong path with this phone.
The replaceable batteries were dropped. The headphone jack was dropped. Refund process was not honored. Samsung needs to reconsider!