I have a Nexus 6, Verizon doesn't support wifi calling on this device. I visited two Verizon stores and a Best Buy shopping for Samsung S8+. I was assured the phone would support Verizon wifi calling. I get the phone home and easy set up except it will not wifi call. I talked to Verizon tech support. Transfer call a couple of levels. Finally the tech reading Q&A discovers the unlocked version is not provided support by Verizon for wifi calling.
I live a great deal of the time in NC and there is no Verizon service. This sucks Verizon.