Apple Watch · Storage & Backup

Back up, unpair, and reset your Apple Watch

Apple Watch data is backed up automatically to the paired iPhone whenever they're connected — there's no separate manual backup step. Unpairing creates a fresh backup and erases the watch, which is also how you reset it to factory settings.

How to open Backup & Reset

  1. Bring the watch and iPhone close together and open the Watch app.
  2. Go to My Watch → All Watches, tap the (i) icon next to the watch you want to remove.
  3. Tap Unpair Apple Watch, confirm, and keep the iPhone nearby until the process finishes to ensure a backup is saved.

What you should know

  • Backups happen continuously in the background while paired and connected — no manual backup action is needed.
  • Unpairing (Watch app → My Watch → All Watches → info icon → Unpair Apple Watch) erases the watch and saves a final backup to the iPhone.
  • A full erase can also be done directly on the watch under Settings → General → Reset → Erase All Content and Settings, without a paired iPhone.

Why it matters

Knowing that unpairing both erases and backs up at the same time prevents the two most common mistakes: losing data by resetting without unpairing first, or thinking a separate backup step is required before selling or giving away a watch.

Best practices

  • Always unpair through the Watch app rather than erasing directly on the watch, unless the iPhone is lost or unavailable, so a backup is preserved.
  • Remove Apple Pay cards manually before giving away or selling a watch, even though erasing also removes them.

Common problems and fixes

Restoring from backup doesn't bring back all apps
Some third-party apps require reinstalling manually after restore since only their data, not the app binary, is backed up.
Watch is disabled after too many failed passcode attempts
Erase the watch directly from Settings → General → Reset on the watch itself, since a disabled watch can't be unlocked with the passcode anymore.

Tips and tricks

  • If you're just switching which iPhone the watch is paired to, unpairing keeps a synced backup so restoring on the new iPhone recovers your Activity history and settings.

Frequently asked questions

Do I lose my Activity/Health history if I reset the watch?

No — Health and Activity data is stored in the Health app on iPhone, not solely on the watch, so it survives an unpair and reset.