I have just ordered the iP4S using my wife's upgrade eligibility. My wife currently has an old normal flip phone, my son has an iP3GS, and I have an iP4. What I want to do is make the new iP4S mine, give the iP4 to my son, and give his iP3GS to my wife. After syncing and backing everything up is it as simple as these steps? 1. Restore the iP4S with my iP4 backup 2. Move my iP4 micro sim to the iP4S 3. Restore the iP4 with my sons iP3GS backup 4. Cut the iP3GS sim into a micro and move it to the iP4 5. Move the sim from my wife's flip phone to the iP3GS 6. Setup the iP3GS as a new phone What am I missing?