As third-generation iPad units have started to land in the hands of customers in the US, a few new details about the 4G models’ behavior have been discovered. As noted by Mac Rumors forum member jsnuff1, it is possible, thanks to the GSM roaming capabilities of the Verizon 4G model, to install an AT&T micro-SIM and access that carrier’s EDGE, 3G, and HSPA+ 4G networks. Doing so requires applying the AT&T APN carrier settings first,…
