Step 1: Requirements for Wi-Fi Calling
1. An operating system that supports Wi-Fi Calling (software)
Apple: iOS 10.3 an up
Android: Android version 7.0 and up
2. A smartphone that is capable of Wi-Fi Calling (hardware). See step 2.
3. A Wi-Fi connection with a good Internet connection
4. You must activate Wi-Fi Calling on your smartphone