So far T-Mobile service has been good! I have some questions. In Sioux Falls, SD we can use T-Mobile native, Alltel roaming and SiouxlandPCS (LongLines wireless). All are available and allow use. However, today the T-Mobile didn't appear on the phone. In its place is Unicel. A search of networks didn't reveal T-Mobile either. When selecting Unicel, the service seems the same as what the T-Mobile was. Ideas? Does T-Mobile have plans to start offering and selling native service in Sioux Falls and the area? Thank you for help. It was surprising to have native T-Mobile service in Sioux Falls, as according to coverage maps, it was all roaming. Anything is possible, though. The various services offered work well when used.