Solution:

1. The effective range of your Bluetooth is 10 meters. You are advised to perform all Bluetooth operations while keeping your phone within a 10 meter radius from your other Bluetooth device(s).
2. This distance may vary according to the environment in which you use these devices. For example, there may be possible sources of wireless interference (such as microwave ovens) or physical obstacles (such as walls or human bodies), which affect the effective range of your Bluetooth. If such factors affect Bluetooth functionality, move the two devices closer to each other and try again.
3. Avoid touching or covering the Bluetooth antenna locations of the paired devices. Otherwise, the Bluetooth connection may be disconnected or audio playback may be affected. The Bluetooth antenna of Huawei phones is usually located around the upper part of the phone's back cover.