What would come up if my sim is out?

If someone tries to call me when my sim is out of my iphone, what would the message say?

Probably subscribers is out of coverage area or subscribers can't be reach. It's the same thing when your phone is off.

"Subscriber not available!"

You can't make a phone call, neither text

You wouldn't get a message since the SIM is out. They would either go straight to voicemail or 6 rings & then voicemail.