“ Originally Posted by D/\SH 
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yes he could only use the ones that use sim cards. they use a whole different network and types of towers. and there is no way to activate a gsm phone through a cdma provider since you wouldnt get any signal and it wouldnt work with their computer system.
So pretty much hes forced to only go to Tmobile or AT&T ect, if he gets tha gsm unlocked version... but if he wants to go to a CDMA provider such as Sprint, he would have to get the actual Sprint Cdma Version of the Touch. right?. thats pretty much what im hearing..
And so I believe your with Sprint right? i mean just seeing some of your youtube videos, you have the Mogul, Touch, but from what ive heard a few other ones as well... and those phones are all from Sprint i assume.. Just really curious, but which phone is like your "Best" or primary one? or do they all have their individual uses for you?