1. Bad Bluetooth connection between watch and mobile phone. Try reconnecting or switching Bluetooth mode.
2. The message notification switch of Huawei Health App is not turned on, so you need to turn on the application switch that needs to push messages in the message notification interface.
3. The watch has turned on "Do Not Disturb" mode. You can confirm whether do not disturb mode is turned on on the Sports Health App device page.
4. If the volume of the watch or mobile phone is not properly adjusted, it is necessary to pay attention to adjusting the volume of the mobile phone and watch to ensure that the sound is within the normal audible range.
5. The Bluetooth of the watch or mobile phone is not turned on, or it is not in pairing mode, resulting in abnormal audio transmission.
6. Equipment failure, such as damage to external components or hardware failure of watches, may cause the sound system to fail to work normally.
If the above methods can't solve the problem, it is recommended to contact Huawei's after-sales customer service or go to Huawei's authorized maintenance point for maintenance.