In the Messages app, you can compose and send text messages. You can also send a suggested reply, choose a quick reaction—like thumbs up, or reply to a specific message in a conversation.
Go to the Messages app .
Enter a phone number: Tap on your Apple Watch.
Double-tap a specific message in a conversation, then choose a Tapback—like a thumbs up or heart.
To help keep a conversation organized, you can respond to a specific message inline.
Go to the Messages app on your Apple Watch.
In a Messages conversation, double-tap a specific message, then tap Reply.
Create your response, then tap Send.