First there are 2 different iPads, one is Wifi only, one is 3G and Wifi for AT&T.
If you have the Wifi only version you can not get Verizon wireless data service with out the use of a Mifi hotspot, Jetpack hotspot or phone hotspot app. The AT&T. Version can be connected to AT& T's network with a tablet data plan but it will not work on verizon. Oops I forgot that there was a Verizon 3G iPad 2. If you have that model you just have to ad service to the table to get data when on the go.
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