Hi
For the best performance from your Apple Watch, be sure to keep both Bluetooth and Wi-Fi permanently enabled on your iPhone.
Keep in mind that how notifications behave depends on the status of your devices and your settings. With Wrist Detection enabled, in order to bring notifications to your attention as soon as possible:
- If your iPhone is unlocked, you will receive notifications on your iPhone instead of on your watch.
- If your iPhone is locked or asleep and your watch is unlocked (regardless of whether the watch screen is asleep or awake) and on your wrist, you will receive notifications on your watch.
- If your watch is locked or has Do Not Disturb enabled, notifications will go to your iPhone.
The following steps may otherwise help (check after each before moving on to the next):
If you have not yet done so, update your iPhone and Apple Watch to the latest software, starting with your iPhone:
- Update the iOS software on your iPhone, iPad, or iPod touch - Apple Support
- Update the software on your Apple Watch - Apple Support
Close certain apps and restart both your iPhone and your watch:
- Close the Watch app and any other apps on your iPhone for which you have noticed notification issues:
- Double-click the Home button, then swipe up on each app preview to close it.
- Turn both devices off together, then restart your iPhone first:
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
More information: