I want to get an iPhone 7 Plus through the Upgrade program. I want the Verizon model with CDMA because I plan to doing extended international travel. Apple tells me that by "Apple policy" I cannot signup for an iPhone 7 without having an existing account with one of the providers (except T-Mobile). I have an iPhone 6 Plus with AT&T as my provider. If I upgrade using my AT&T account, I am told I have to get the CDMA illiterate AT&T iPhone7 model. (They also give you the AT&T model if you sign up for T-mobil.) Any suggestions on getting around this policy without changing phone numbers, disrupting cell service, or having to have two cell phones/accounts for a transition period?