Just wanted to share my experience with VZW customer support, and see if someone could confirm or refute this process. I have my iPad on a monthly 2GB, $30 Verizon plan. My iPhone5 will be porting from AT&T to Verizon. When I pre-ordered the iPhone on apple.com, I was not able to give my iPad's existing "phone number," it did not recognize the account. So I set up a "new" Verizon plan (4GB share everything), with the intent of merging the iPad into this new plan. Spoke to Verizon this morning, they are telling me to activate and port my phone number when the iPhone arrives (through iTunes), and then I must bring my iPad to a Verizon location, because I will need a new sim card in the iPad. Its the only way to get my iPad moved to the new iPhone account. It cannot be done over the phone or on-line because the sim card has to be replaced. Does this make sense? Thanks for your input.