Which is why I switched back to Verizon
I had Verizon from 2001 to 2004 (I carried a Verizon prepaid phone during my senior year in high school back in Iowa) and when I moved to Springfield (MA), I eventually switched to then Cingular (now AT&T) as Verizon's coverage in Springfield was spotty and unusable. Fast forward to 2011, AT&T was a sinking ship in quality so I abandoned ship when I had an iPhone 3GS that kept dropping calls. I now moved all my devices over to Verizon and they now have better coverage than AT&T in the same areas that they were unusable in 2004 (Eastfield mall was a notorious dead spot and RadioShack could not activate VZW devices in their store and they'd have to go outside to get a signal).
It puzzles me that Verizon has excellent coverage in a rural area like Iowa but an urban area like Springfield, MA had spotty coverage at the same time.