Apple Watch doesn’t vibrate when text messages come through

Hello Okinawa3757 and welcome to Apple Support Communities.

I see you have a question about notifications for the Messages app on your Apple Watch.

Notifications on your Apple Watch - Apple Support

Note that if you are within range of the paired iPhone and the iPhone is unlocked, that notifications will go to that device and not to the Apple Watch.

Cheers.

Hi Okinawa3757.

If the behavior persists after having rebooted both the Apple Watch and the paired iPhone, you'll want to reach out directly to Apple Support for further options.

Contact - Official Apple Support

Cheers.