There is a difference between being disconnected and unpaired.
If your watch face shows a red phone symbol with a line through it, this means that your Apple Watch and iPhone are disconnected.
![User uploaded file](https://discussions.apple.com/content/attachment/617735040)
You did not need to re-pair your Apple Watch - just reconnect it. They should reconnect automatically when your watch and iPhone come back within range of each other. If they don't, follow these steps - checking after each one - until they do:
- Check that Bluetooth and Wi-Fi are both enabled on your iPhone and that your iPhone and Apple Watch are close by each other.
- Check also that you haven't enabled Airplane Mode on your watch.
- Disable and then re-enable Bluetooth on your iPhone: (Settings > Bluetooth)
- Enable and disable Airplane Mode on your Apple Watch: Swipe up on the watch face > Swipe sideways to the Settings Glance > Tap the airplane icon to enable Airplane Mode (this turns off Bluetooth & Wi-Fi) > Wait for a short while > Tap the icon again to disable Airplane Mode (re-enables Bluetooth and Wi-Fi) > Connected should appear at the top of the screen.
- Restart both devices.