If you lose internet access temporarily:
You will not receive calls during the disconnection period.
Callers may:
Be sent to your voicemail (depending on how your original number is configured).
Or hear a message that the number is unavailable.
Once your internet is restored:
The app resumes working immediately.
Any missed calls (and voicemails, if supported) may be shown in the app’s call log.
For important communication, it’s recommended to stay connected via mobile data when outside Wi-Fi coverage.