Whether your iPad contains a GSM or CDMA radio depends on the carrier you purchased it for and the iPad model. The iPad Mini and iPad with Retina display purchased from Verizon Wireless or Sprint contains a GSM radio, CDMA radio and LTE radio. If you purchased an AT&T model, the iPad contains only GSM and LTE radio. Older iPad models usually only contain one type of radio or the other. For example, the iPad 2 only contains a CDMA radio when purchased for Verizon Wireless. Writer Bio
