Bob, on Verizon and Sprint, data coverage is sometimes different from voice. Data runs on a different channel on the CDMA networks. Now when I am referring to "Data" I mean the direct medium speed 1xrtt or high speed EVDO networks, not using the phone as a slow speed dial up modem. On the GSM networks, GPRS data runs coincident with voice. If the operator has beefed that up with EDGE software in a given market, as I know Cingular has done system wide and T Mobile virtually system wide, it is also coincident with voice coverage. The ultra high speed network (HSPDA) which will compete with Verizon's EVDO, is like EVDO, on a market by market basis. But again, it basically rides on the GPRS network. One of the advantages of GSM is that the same device can handle direct data and voice connections simultaneously. The T-Mobile mapping system is very accurate, by the way. There was another post discussing that they could not verify T Mobile coverage in a particular area. This readily available mapping system does just that. Cingular stores have this available too but they have not set it up for direct customer access yet. Now, I am sure that a lot of the above sounds like I am speaking in tongues to a lot of folks, so if there are any questions, don't be afraid to ask! Using the cellular networks to access data and entertainment is exploding; if it is not part of your life now, it will be within the next couple of years. George