Not getting any notifications or calls? Open Control Centre on your watch and check the connection status. A red cross or a red phone icon with a line through it (often shown alongside the word “Disconnected”) means your watch and iPhone aren’t talking to each other. Once they reconnect, you’ll see a green phone icon instead.
Try these steps to reconnect:
If it still won’t connect, unpair and re-pair your devices:
For more help, see Apple’s guide: https://support.apple.com/en-gb/108360