[Mojary]

it should be the same on big red too. their tp2 has global mode. what the global mode does is that it just automatically will search for both signals and pick up which ever network signal is available. the only caveat to it is that it will never pick up a GSM network in the US since the sim device is defaulted to be locked for US GSM use (unless you sim unlock). so all it really does is put in towards the battery drain. so it's just better to put your phone setting in CDMA instead of global.

and to OP...the store rep was incorrect in telling you that you can't store information on the sprint sim card. as far as you being the end user is concerned, even if you are on a GSM network, there isn't really much information you can store in your sim card in the first place. the only thing the user can store on the sim card are contacts. but idid notice something about the sprint sim card that's different from the way i was able to store contacts with my at&t sim (was on that network a couple of years ago). with the sprint sim, if you have multiple number for a single contact and you copy that contact to the sim, it only copies it with one number. when i was using at&t, it would copy all contact info.