Most of the Wireless carrier in USA, UK, Canada and others are now supporting Wi-Fi calling features for all compatible devices. So here is the Guide on how to make or Enable Wi-Fi calling iPhone for the users who are using Verizon, T-Mobile, AT&T or Sprint wireless network. Wi-Fi calling free of cost for located number in USA, Outside USA or international call it will be change for that. This guide is also helpful if you fail from make Wi-Fi call from iOS device.
HD Voice or Wi-FI calling compatible iPhone, first you need to enable then setup for you address.
Steps for Setup or Enable Wi-Fi calling iPhone: Verizon, T-Mobile and Sprint
Steps for Turn Wi-Fi Call on iPhone setting by Verizon
Go to the Settings App > Phone > Wi-Fi Calling > Turn on Wi-Fi calling on This iPhone.
Once you enabled Wi-Fi Calling option, follow the on screen instruction that would be need to eanter your U.S. address. Once you complete all the guide line, Wi-Fi calling will be automatically turn on for account by Verizon.
Any Problem while you travel internationally, Make sure it will be charged and know more about full detail on Verizon customer support (911 – Emergency call).
Wi-FI calling with T Mobile
Go to Official Site, Register your address at first, More about update Existing Address or Enter new address click here. Or Go to the Settings App on iPhone > Phone > Wi-Fi calls > Turn On > Next Tap on Emergency address.
Your devices scan Wi-Fi network and Turn on over the air calling for you.
Make Wi-Fi call using AT&T
Setup for AT&T Wi-Fi calling same like above, But Charges guide line work like that Domestic number has no charge but international call will automatically applied on long distance package and standers charges as well.
Your iPhone installed minimum iOS 8.3 or later updated. Go to the Settings > Phone > Wi-Fi calling and enter your details.
Enable Wi-Fi Calling iPhone I very easy but you will get problem on miss configuration and Wrong plan selection.