I have a Verizon iPhone 6S and I am selling it to buy a GS7. I plan to use Swappa since it seems to the best and safest place to buy and sell used phones. I asked Verizon to unlock my phone and they said it already is since they don't lock any of their LTE phones. They said it will work on any CDMA network, but some GSM networks will have iffy connectivity. So can I sell my phone as the unlocked A1688 model instead of the Verizon A1688 model? The unlocked version is going for about $20 more (16GB storage) so it would be great if I could sell it like that. The unlocked A1688 model is strictly for CDMA networks as opposed to the international A1633 model which is GSM networks.