I am currently on Verizon Wireless and I am going to switch over to my GF's family plan when the iPhone 4 comes out. There are three people currently on my GF's family plan and I am going to be the 4th. Will she be able to pre-order the iPhone on her credit card for me or if I order it myself am I considered a "new" customer even though I am adding on to her EXISTING family plan? ATT's wording is not to clear How many devices can I preorder? AT&T stores will sell one iPhone 4 per person for new customers, and one device per household for new orders placed online. Existing customers may purchase one per eligible telephone number online or through our stores.