That would explain the dead spots; when Sprint "absorbed" Cingular Wireless they got they're network also. Cingular was running different formats in different places around the country (Can't someone say consistency?) and that's where Sprint is still sorting some of it out (more like yanking it out and replacing it); but they're well on track to get it smoothed out.Sprint. The coverage varies however it's great for my situation. Use Sprint's data map to get an idea. They use Sprint's data network for VOIP, not voice network.