T-Mobile's own iPhone 5S does not handle AWS very well. I'm in a really good coverage area for TMO. I often find my phone loosing 4G or LTE quite often. My mom uses an unlocked iPhone 4S on T-Mobile using only their new 1900mhz network. She gets a great signal pretty much everywhere. In places where she has a strong signal, I do not. Mine often bounces back to EDGE or 1 bar of 4G when hers has 4 or 5. Using the Galaxy Note 3, and S4, the AWS 3G is much better, and still there is an option in the dialer to force only Band 2 (1900). I wish there was a way to force PCS 3G on the iPhone 5S. The AWS is so freaking weak. On the contrary, the T-Mobile EDGE signal is always strong. Is this just how T-Mobile operates on their 1900 band? You would think the AWS 3G/4G would be the strongest, but its NOT. If only T-Mobile can shut off its AWS 3G network all together and just use PCS for 3G already. Weren't they suppose to do that and move the spectrum over for LTE?