I have an AT&T iPad 3 and am one of the few 'grandfathered' all you can eat internet customers who gets unlimited data for $29.99. My area is not AT&T LTE ready, but Verizon rolled out LTE years ago here. I know this because I happen to have a Verizon 4G LTE MiFi card for work. My questions: 1) Is the iPad 3 SIM UNLOCKED? Such that a trip to Europe & a local SIM would work? 2) Should I consider giving back my iPad 3 AT&T model & getting the Verizon one instead? (i've heard rumors that my AT&T SIM would even work in the verizon model flawlessly with no effort). 3) If I got the Verizon iPad3, pop-ed out the SIM card it comes with & use the SIM from my Verizon 4G MiFi device, will the data work? 4) Is it true that the Verizon iPad3 can also be used as a MiFi, or wireless hot spot? Anyone who has any confirmed advice is welcome to respond.