When the watch receives a message notification from the mobile phone application after opening the [Wake screen] function, the screen will automatically light up. If you choose to close, the watch will not light up when the message comes, however, it will only vibrate, which can improve the endurance to a certain extent.
To enable this function, please refer to the following path:
1. Open the [Mi Fitness] APP;
2. Enter [Device];
3. Tap [App notifications];
4. Enable [Wake screen].