How do I set up automatic replies for incoming text messages on my iPhone?

Turn on Auto-Reply

They can choose to notify you anyway by sending "urgent" as an additional message. Go to Settings > Focus, then tap Driving. Tap Auto-Reply. Select an option, like No One, Recents, Favorites, or All Contacts.

Use the Driving Focus on your iPhone to concentrate on the ...

This feature exists only while driving.

Jerzyboy7373 wrote:

A colleague of mine recently went on vacation. She was out the country and could not reply to text message so she set up an auto reply. I believe the auto reply message was customized, not generic.

Check with your carrier. They may offer an option for a vacation message for your SMS messages.