Over at the MacRumors forums, reader jsnuff1 has confirmed that the new Verizon iPad works with AT&T's 3G network. The Verizon iPad has a built-in GSM SIM slot and supports connections on the same 850/900/1800/1900 MHz bands as the AT&T unit.

What jsnuff1 did was to slot in an iPhone microSIM, using the standard AT&T APN carrier settings hack, and then test the unit using AT&T's 3G service. You can use this approach for both standard AT&T iPhone accounts as well as the Pay-as-You-Go ones discussed in this TUAW post.

If you take this approach, do not expect to use AT&T's LTE network. Real 4G service (i.e. not FauxG) runs on 700 and 2100 MHz for AT&T. The Verizon model supports only 700 MHz.

The opposite approach will not work. To the best of my understanding, Verizon CDMA does not use a transferable SIM, so you cannot move a Verizon account onto an AT&T iPad.

In the end, what this means is greater flexibility. When you move outside a Verizon coverage area, you can swap in an AT&T SIM and get 3G data service at least, or share that service without tethering but with a little bit of paperclip work and SIM swaps when on vacation.

*Verizon is currently in the process of acquiring AOL, Engadget's parent company. However, Engadget maintains full editorial control, and Verizon will have to pry it from our cold, dead hands.

This article was originally published on Tuaw.