After setup/activation steps followed, I keep getting "Server Unreachable" when making a phone call.
As the Subject states, I have followed all Visible's setup instructions to activate the ZTE phone that I brought with me to Visible (phone was not purchased through Visible). Could the fact that I didn't buy my phone from Visible be the reason why I can't turn on Wifi Calling? I have verified that Wifi Calling is a feature that my ZTE phone offers.
