What is the difference between GSM and CDMA cell phone?

). Cellular carriers including Sprint , AT&T, Verizon and T-Mobile use one or the other. Understanding the difference between GSM and CDMA will allow you choosing a cellular phone for your need. The GSM Association is an international organization founded in 1987, dedicated to providing, developing, and overseeing the worldwide wireless standard of GSM. CDMA, a proprietary standard designed by Qualcomm in the United States, has been the dominant network standard for North America and parts of Asia. However, GSM networks continue to make inroads in the United States, as CDMA networks make progress in other parts of the world. There are camps on both sides that firmly believe either GSM or CDMA architecture is superior to the other. That said, to the non-invested consumer who simply wants bottom line information to make a choice, the following considerations may be helpful.  more