I am in the same boat here with a string of Nextel only towers near by. To make matters worse years ago I ported my landline to Nextel and now Sprint will not port to Sprint because they have no Sprint service in that area, but they let me have an airave. I do not know what to do with the ported number that I have had for 25 years when they shut down Nextel and will not port to Sprint. That phone is one of 5 lines, 4 Sprint and 1 Nextel. Anyone have any ideas? Sprint just says can’t help you but we can give you a new Sprint number.