HT4157: AT&T: How to set up and manage a cellular data account on your iPadLearn about AT&T: How to set up and manage a cellular data account on your iPad
Currently Being ModeratedSep 2, 2012 1:26 PM (in response to Wayneo12)
If you purchased the new iPad (aka iPad 3) for use on AT&T, you can only use it on AT&T. There have been reports that iPads purchased as Verizon iPads will work with an AT&T 3G SIM card. However, you won't be able to use an AT&T 4G SIM as the companies uses different frequencies. If it's an iPad 2, it can only be used on the carrier it was purchased for.