GSM and CDMA versions of the iPhones
iPhones that use the GSM network (T-MOBILE,AT&T) are able to multitask in a way that their CDMA counter parts (SPRINT,VERIZON) cannot do. The GSM versions allow you to talk on the phone and use the web at the same time. Or any app that needs a internet connection as well. Other than that the iPhones still operate the exact same manner.
















