You will encounter a lot of "stupid" questions from Ebay. You are not just selling iPhones or Lines only... you are selling "service" too. Most of them don't know how the system works. You really need to explain steps by steps. I bet 90+% of Verizon Customers don't even know about Assumption of Liability process. I was one of them until I discover this thread from SD.
It's not an easy task.
It is not, a lot of hand holding... please see my recent positive feedback on ebay
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The CDMA radios aren't turned on in the GSM iPhone 5 or 5s. They are turned on in the 6 and 6 Plus. I was using a T-Mobile iPhone 6 on Verizon when I AOLed my first line in, but only after I had activated the SIM card on a Verizon iPhone 5c first. The T-Mobile phone showed up as an "Unknown, Non-VZW" device.
but everything works as it is? does that non-vzw device massage go away?