What difference does it make if I use a CDMA, GSM or TDMA cell phone?

What difference does it make if I use a CDMA, GSM or TDMA cell phone? Answer: There is no universal standard for cell phone technology so these acronyms represent various digital cellular technologies. Every cell phone carrier in the U.S. and Canada use one of these 3 technologies, all of which provide a much better sound quality than analog phones but there are also differences between these systems. It's important to note that TDMA service providers in the U.S. and Canada have switched their technology to GSM so, basically, you now have a choice between GSM and CDMA. In the U.S., those popular service providers use the following technologies: • AT&T Wireless = GSM • Cingular = GSM • Sprint PCS = CDMA • T-Mobile = GSM • Verizon Wireless = CDMA GSM's high speed wireless data technology, GPRS, usually offers a slower data bandwith for wireless data connection than CDMA's high speed technology: 1xRTT.  more