Verizon Wireless
Verizon Wireless, the nation's 2nd-largest wireless carrier, operates a CDMA voice network and offers consumers a large selection of cell phone plans. Leveraging its 3G EVDO data network, Verizon offers multimedia features with its exclusive VCast service. Verizon was ranked atop JD Power's 2007 retail satisfaction survey.
key carrier statistics
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Coverage:
national
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Network:
CDMA/EVDO
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Subscribers:
58.7M
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Market share:
25.6%
signal strength
signal strength map

I think Verizon is spectacular. I have only been with them for a year but they have always helped me along with great customer service. they supplied me with a free phone when my speakers and microphone broke on my LG EnV phone. They did it pretty quickly and everything was completely free. I’d say that is good customer service and the sign of a good wireless provider.