Unlimited UK eSIM: How do I turn on WiFi Calling (VoWiFi) and HD Voice (VoLTE)?

To turn on VoWiFi on your phone, go to settings, locate the "Connections," "Network & Internet," or "Phone" app settings, and toggle on "Wi-Fi Calling". On iPhones, go to Settings > Cellular > Wi-Fi Calling. On Android, find it under Settings > Connections > Wi-Fi Calling or via the phone app menu.

To turn on HD VoLTE , navigate to your phone's mobile network settings to activate 4G calling. On Android, go to Settings > Connections/Network > Mobile Networks and toggle on VoLTE. On iPhone, go to Settings > Cellular > Cellular Data Options and enable VoLTE.