Activity is not showing on activity app on iPhone.

Hi

The following steps may help:

On your iPhone, go to: Settings > Privacy > Motion & Fitness - check that both Fitness Tracking and Health are enabled.

On your iPhone, in the Watch app, go to: My Watch > Privacy > Motion & Fitness - turn on Fitness Tracking and Heart Rate.

Check that both Bluetooth and Wi-Fi are enabled on your iPhone (Settings > Bluetooth and Settings > Wi-Fi).

Check that your watch is not in Airplane Mode:

• When viewing the time on your watch, swipe up to open Control Centre > tap the Airplane Mode icon to enable / disable the mode.

Close certain apps and restart both your iPhone and your watch:

• Close the Watch app, Activity app and Health app (if open) on your iPhone:
  • Double-click the Home button, then swipe up on each app preview to close each app.
• Turn both devices off together, then restart your iPhone first:
  • Restart your iPhone, iPad, or iPod touch - Apple Support
  • Restart your Apple Watch - Apple Support

Unpair and re-pair your watch:

• The Watch app on your iPhone takes a backup of your watch automatically when unpairing via the app. Choose to Restore from Backup 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

If the issue persists, you may wish to follow the steps below, which have resolved the same issue for other users.

Important: note that this solution involves the permanent loss of all sensitive data on your iPhone and watch, including historic Health and Activity 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 as standard).
• Do not select the option to Encrypt iPhone backup.
• How to back up your iPhone, iPad, and iPod touch - Apple Support

Restore your iPhone as new (ie to factory settings) using iTunes:

• Restore your iPhone, iPad or iPod touch to factory settings - Apple Support

After the Restore completes, during setup, restore your iPhone from the unencrypted backup:

• Restore your iPhone, iPad, or iPod touch from a backup - 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

Hi,

See if calibrating helps > Calibrating your Apple Watch for improved Workout and Activity accuracy - Apple Support