Basically I posted before but links didnt work. Phone A: iPhone 4s (Mine) (not upgrade eligible) Phone B: Dumb Phone (No data plan) Upgrade Eligible. I preordered my iPhone 5 with Phone B. Purchased Smallest data plan possible with Phone B. When i got my iPhone 5 I want to take Phone A's sim and put into Phone B. and deactivate Phone B's data plan and go back to dumb phone. But pHONE A'S Sim is Micro-sim and phone b is nano sim. How Do i Put Phone A's sim into Phone B (iphone 5) and deactivate the data plan i purchased online and just use Phone A's data plan. If that makes sense?