I purchased an iPhone 7 128GB Plus Black outright at Target today, with the goal to be a Verizon phone with the CDMA modem. Prior to opening the phone, I looked at the part number on the back, MN482LL/A and googled, turns out this is an ATT model number. However, on a look around at some other sites, like Best Buy, it lists MN482LL/A as the model number for the Verizon one also. Is it possible that the 128 GB black plus only comes in a CDMA/GSM combo version, and that's why there is only one part number? I don't want to unwrap this thing and find out that it doesn't have both modems inside. For paying full price I'd want this phone to work on any network I throw at it and also to have decent resale value. Anyone have any insight on why the part number seems to be the same for the ATT and Verizon model? Thanks.