If you don't have enough storage to update your Apple Watch
Learn what to do if your Apple Watch storage is full or if you need more available storage to install a watchOS update.
When you try to update watchOS, you might see a notification that you need more available storage.
Try this first
Restart your Apple Watch, then try updating it.
If you still can't update, free up storage space by removing music, turning off photo syncing, and removing some apps. Then try updating your watch. After you update, you can add back the music, photos, and apps that you removed.
To check how much available storage your watch has, open the Settings app, tap General, then tap Storage.
Follow these steps if you still can't update your Apple Watch
Place your watch and iPhone close together, and keep them close throughout this process.
Unpair your Apple Watch
Open the Apple Watch app on your iPhone.
Go to the My Watch tab and tap All Watches at the top of the screen.
Tap the info button
next to the watch that you want to unpair. Tap Unpair Apple Watch.
For GPS + Cellular models, choose to keep your cellular plan.
Tap again to confirm. You might need to enter your Apple Account password to disable Activation Lock.
Set up your Apple Watch
Next, set up your Apple Watch with your iPhone. When asked whether you want to set up as new or restore from a backup, choose to set up as new. Then follow the onscreen instructions to finish setup.
Update your Apple Watch
Download and install the watchOS update.
Restore from backup
If you want to restore your Apple Watch from its latest backup, follow the steps in the previous section to unpair it again. Then set up your watch once more with your iPhone. This time, choose to restore from backup rather than set up as new.