Apparently there are phones not serviced in America.
I have a China smart phone (Blackview 6000s) and have not been able get any service from Verizon, even though it is an unlocked GSM/CDMA device (dual SIM card using Droid Marshmallow).
The same phone is used worldwide, but not here.
If this the phone you are referring to, it is a GSM only phone and doesn't have the radio frequencies compatible with the Verizon Wireless network. WCDMA does NOT equal CDMA. http://www.gsmarena-mobile-phones.com/product/blackview-bv6000
I'm most definitely NOT a VZW employee. If a post answered your question, please mark it as the answer.