I travel extensively throughout the US. I carry an iPhone and a BlackBerry on vzw (and also a vzw wireless broadband card with a Cradlepoint router). The Veri

I travel extensively throughout the US. I carry an iPhone and a BlackBerry on vzw (and also a vzw wireless broadband card with a Cradlepoint router). The Verizon network wins hands-down for overall coverage/speed. If I am in a location with both 3G coverage and available bandwidth on the 3G network, then the iPhone is a great mobile device. However, those instances are rare and quite often my iPhone is getting Internet access via the broadband card/Cradlepoint router over Verizons network.