Im on sprintopcs, and im really impressed with there improvments on cdma and there 3g. I can connect my phone to my laptop and get 128k up and down, not to shabby for being connected by a cell phone. Gsm is really crummy in this area, it would be nice to have a standard, but the problem is when you have weak signal you have cut outs and the likes, with my phone u either get signal or you dont.