We've had great service with T-Mobile through the middle section of the United States Red River New Mexico Taos, Santa Fe all down I-40 between Oklahoma City and New Mexico it's no problem at all. I think the their senior deal is a great deal and that includes all taxes for one price we've also been to most of Arkansas and had no problems at all and your not under a contract buy a cheap smart phone and try it I think you'll like it for the money, we listen to XM radio all away from Oklahoma City to Santa Fe on their service with no interruptions. I think all cell phone carriers have their bad spots in the United States but overall I think T-Mobile's great.