iphone 4 & 4S will get 3G on the network. So I would have 3G in the city i live in. When I looked up what frequencies the SGH I717 supported from GSMArena.com 2G 1900mhz 850hmz
3G 1900mhz 850mhz
LTE 1700hmz 2100hmz 700hmzSo the SGH I717 will work on T-Mobile 2G 3G and 4G LTE NetworkI went to my local T-Mobile store and they set me up with a new sim card. SGHI717 uses a regular large Sim Card. Once I put in the T-Mobile Apn settings I was ready to go. Software: When I unboxed SGH I717 It came woth Andriod 4.0. I downloaded Samsung Kies and Updated to Android 4.1. and I really liked the difference. Andriod 4.0 on the SGH I717 was terrible you could tell the phone had Andriod 2.3 which makes a bad experience. 4.1. made it seem more modern. Overall I'm happy with software. Hardware: 1GB RAM is my major problem with the device. It should have had 2GB. I have to make sure I clear RAM. And have a App Killer Application to make my device run smooth. Other then that I'm content with Hardware.S-Pen: I love the S-Pen. Its a pretty cool tool. You can screen shot with it. You Can cut out post, pictures and use S-Memo to create cool cuetimzed articles and Pictures. It helps keep my Instagram interesting. Overall: Overall I'm happy with my Galaxy Note 1. T-Mobile Network is awesome in my area. So if your looking for a good deal this is one. I love my Note and is satisfied. Hopefully you'll be too.