As CDMAOne carriers roll out their 1xRTT networks enhancements, markets will slowly begin to take advantage. Since there are so many customers with CDMAOne handsets (IS-95), they can't turn the network to 1xRTT full throttle. Therefore, until all the handsets are replaced with 1xRTT compatible handsets, some of the network must remain CDMAOne specific. As the percentage of xRTT/non-1xRTT handsets shifts, the network will as well, providing you with higher data rates that are closer or at the specified rated 153kbps.
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