WiFi calling allows you to make calls when no mobile network is available. The Gabb Phone Plus still does not connect to the internet as it has no web browser or app store.
Turn on Wi-Fi Calling
1. Open your phone app (green phone icon)
2. Click the 3 dots in the top right corner (next to the search icon)
3. "Settings" > "Wi-Fi Calling"
4. Toggle this option on
Wi-Fi calling is now enabled on your device!