1. Make sure that the Watch 3 Pro is connected to Nothing X app and to Bluetooth.
2.Check if the notification toggle is turned on in the settings of the Nothing X app, and whether the notification settings for third-party apps are enabled.
3. In order for your Watch 3 Pro to receive notifications of new messages from apps on your phone, the app must display a pop-up notification on your phone when it receives a new message.
4. If the above instructions do not solve the issue, press the button on the Watch 3 Pro to enter Settings System Menu, then click Restart. Or, press and hold the button, then click Restart and check again.
5. To experience the latest firmware features, you can upgrade the firmware to the latest version in the Nothing X app. To do this, open the Nothing X app, go to the My Devices About Firmware update.
6. Go to iPhone Settings Bluetooth CMF Watch 3 Pro Share System Notifications, and make sure the switch is on;
7. If the above steps do not resolve the issue, press the button on Watch 3 Pro to enter Settings System Menu. Click Reset. Then, check again to see if the issue is resolved.