After pairing Apple Watch with an iPhone, you may need to wait an hour or more before you can receive a Digital Touch.
- In the Contacts app on your iPhone:
- Check that each friend's contact card includes their Apple ID email address and iPhone number (edit where necessary).
- Check that your own contact card includes your Apple ID email address and your own iPhone number.
- Check that you have added your friends to the Friends list on your Apple Watch:
- On your iPhone: Apple Watch app > My Watch > Friends.
- To add more friends: In the Friends list > Add Friend > tap someone in the list of contacts. (If someone isn't in the list, open Contacts on your iPhone, add them there, then try again).
- [You may find that this step is not necessary: Delete old iMessage conversations with your friends - on your iPhone and Apple Watch:
- iPhone > Messages > swipe left on a message thread > delete.
- Apple Watch > Messages app (from the Home screen - accessed via single press on the Digital Crown) > swipe left on a message thread > tap on trash.]
- Set new Messages conversations to start from your iPhone's phone number.
iPhone > Settings > Messages > Send & Receive > scroll down to Start New Conversations From > choose your iPhone phone number.
- On your iPhone in the Apple Watch app: My Watch > General > Reset > tap on Reset Sync Data (you will not see anything happen after tapping it - the process runs in the background, invisibly to the user). Wait for a minute or so before continuing.
- Disable and re-enable iMessage on your iPhone:
iPhone > Settings > iMessage > toggle off / on again.
- Restart both your iPhone and your watch (turn both off at the same time, then restart your iPhone first):
To turn your watch off: press and hold the side button until you see the Power Off slider; drag it to turn off. To restart: press and hold the side button until you see the Apple logo.
If your friends can't send a Digital Touch to you, ask them to follow the same instructions (send them a link to this thread).
More help here: Use Digital Touch - Apple Support