First, Thanks for all the info here folks. It's been very helpful in making a decision. Second, I've look and I don't see this question addressed anywhere so my apologies if this has been asked. I'm planning on dropping ATT as a carrier and moving over to Vz. the Tbolt and unlimited data plan being grandfathered are the carrots that have just about got me to pull the trigger on this deal. the one thing I cannot find a definitive answer to is if the ATT simcard be readable in the TB? Can I pop my ATT sim card in the Thunderbolt and be able to transfer my contacts over?