Network - Different Carrier
separate, "alternative" companies that
use the same wireless networks as the major carriers. They're also
as Mobile Virtual Network
Operators (MVNO), wholesale carriers, or cellular "re-sellers". You
get your phone, plan and customer service from
these companies instead of the underlying carrier. Some use
more than one network and the type of wireless device determines
whether a CDMA or GSM carrier is used.
There is a more detailed version of this page
at: Alt-Wireless Networks.