<<And some of the same people that claim 1x is indeed 3G also contend that EDGE is still 2.5G or even worse, "vaporware".>>Certainly GPRS and EDGE are steps on the road to 3G. They both rely on multiple cells connecting with a single 2.5G phone. Each cell contributes a portion of the bandwidth that the TDMA system needs to reach high data rates. The biggest difference between GPRS and EDGE appears to be the number of cell sites that must be simaltaneously connected to a single phone. Up to 18 cells must connect to each 2.5G phone to reach the theoretical maximum data rate that EDGE is promising. I would not call this "vaporware". However, I have difficulty believing that each and every 2.5G phone operating in a TDMA environment will find that many simaltaneous connections. GSM, GPRS, and EDGE are still TDMA.
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