Had Voicestream/T-Mobile and then switched to AT&T over a year ago. No comparison....AT&T is so much better. T-Mobile had the price advantage for a long time but AT&T suddenly became almost even. Batteries would run out on my T-Mobile phone after just a couple of days of light use. AT&T runs forever. Maybe it's because there were no T-Mobile towers nearby (in Ft.Worth) which accounted for my marginal signal inside alot of buildings.....AT&T signal always strong. Anyway, that's my two cents.