I love T-Mobile, but they do have some noteable dead spots where you are barely out of tower range. If driving, you might be back in service before you even know it. I've noticed 0 signal in some subdivisions north of city limits, around Cherry just east of Glenstone, over by Cox South or Mercy, and around Fremont Hills on CC. My grandfathered plan is just too good a price to drop them in hopes of a slightly more convenient alternative.