I have had Att ,Cingular, Verizon, Sprint, they all were good in the begining always a problem near the end. I have had Nextel for 1 1/2 years i got a 2 year contract with them. I love the walkie talkie i can honestly say they are the best so far. I will be renewing my contract in 6 months. Unless something terrible goes wrong with them between now and then.