Like other smartphones, Samsung devices allow you to make voice calls over Wi-Fi networks thanks to the Wi-Fi calling feature (given that this feature is supported by your mobile operator). Follow this short guide to enable this feature on your phone.
To enable WiFi calling on Samsung phones:
Tap on Apps > Settings > More connection settings
- Toggle Wi-Fi Calling on.
- Several preferences are available, Wi-Fi Preferred, Cellular Network Preferred and Never use Cellular Network.