Check Airplane Mode is turned off:
This setting is located at: Home > Settings > Airplane Mode off.
Check Wi-Fi connection:
Turn on Wi-Fi Calling:
This setting is located at: Home > Settings > Apps settings > Phone settings > Wi-Fi Calling > Wi-Fi Calling on This iPhone on.
Re-enter your Wi-Fi password / Forget and rejoin the Wi-Fi network:
Restart tu iPhone:
Remove and reinsert the nano SIM:
This will only be applicable to iPhones that use a physical SIM card.
Restablece las configuraciones de red:
Esta configuración se encuentra en: Home > Settings > General > Transfer o Reset iPhone > Reset > Reset Network Settings. Esto borrará las contraseñas guardadas Wi-Fi.
¡Completaste los pasos!
