1) Does anyone use this company as well? I've been there for less than a month and all my call are being dropped within 5 - 15 minutes. It's so annoying, at times i cannot even hear the person over the phone and the call sometimes come back or just drops. I was wondering is it only me? or anyone else experiencing this. 2) If i buy another iphone which isn't unlocked will it still work for h20? It'll be under At&t.