i. Go to "Settings", then select "Phone"
ii. Turn on "Wi-Fi Calling", then turn on "Calls on Other Devices"
iii. Turn on "Allow Calls on Other Devices", then tap "Add Wi-Fi Calling For Other Devices"
iv. Read and agree to the "Terms and Conditions", then tap "Subscribe Now" or "3-month Free trial"
v. Tap "OK"
vi. iCallingPlus service is now activated
If you want to add your iPad or iPod touch, please have your iPhone ready and follow these simple steps:
i. Go to "Settings", select "FaceTime", then tap "Calls from iPhone"
ii. Turn on "Calls from iPhone", then tap "Upgrade Wi-Fi Calling"
iii. Tap "Enable"
iv. A six-digit code appears
v. Enter the six-digit code and then tap "Allow", setup is completed