Activity app on iPhone says it needs to be setup on Watch but...

Hi

Check that Bluetooth and Wi-Fi are both enabled on your iPhone:

- Phone: Settings > Bluetooth - on.

- Phone: Settings > Wi-Fi - on.

Check that your Apple Watch and iPhone are connected:

- When viewing the time on your watch, swipe up on your watch face > swipe left / right to the Settings Glance > check that this states Connected and shows a green phone icon.

- Disable Airplane Mode if it is enabled.

It may then help to restart both your iPhone and your watch. Turn both devices off together first, then restart your iPhone before restarting your watch:

- To turn your watch off: press and hold the side button until you see the Power Off slider; drag it to turn off;

- To turn it on: press and hold the side button until you see the Apple logo.

Otherwise, it may help to unpair and re-pair your watch. The Watch app on your iPhone takes watch backups automatically, including a fresh one when unpairing via the app. Choose to restore the watch (Restore from Backup) when offered the option during set up. Most data and settings will be restored, with some exceptions (eg Apple Pay cards, passcode).

- Unpair your Apple Watch and iPhone - Apple Support

- Set up your Apple Watch - Apple Support

The following solution has resolved this issue for others. Note that it involves permanent loss of all sensitive data on your iPhone and watch, including Health data, HomeKit data, and saved passwords.

• Start by making an unencrypted backup of your iPhone:
  • This must only be done via iTunes on a computer (because iCloud backups are encrypted);
  • Do not select the option to Encrypt iPhone backup;
  • How to back up your devices using iCloud or iTunes - Apple Support
• Restore your iPhone as new using iTunes:
  • Use iTunes to restore your iPhone, iPad, or iPod to factory settings - Apple Support
  • When you see the option to Restore or Update, choose Restore;
  • After the Restore completes, during setup, restore your iPhone from the unencrypted backup;
  • If you can't update or restore your iPhone, iPad, or iPod touch - Apple Support
• Pair your watch, setting it up as a new watch (do not restore it from backup):

  Set up your Apple Watch - Apple Support