Huawei devices provide battery saving feature that shuts down applications when the screen goes off. 
Refer to the steps below to see if the problem is solved.

【Step 1: Setting KKBOX as Protected Apps 】
1. Tap [Phone Manager] → [Battery Manager].


2. Tap [Protected apps].


3. Enable option for [KKBOX].


KKBOX will show as "Protected".


【Step 2: Allowing KKBOX To Continue Running After Screen Off 】
1. Go to [Battery Manager] by referring to steps 1 and 2 of 【Step 1】.
2. Tap [Power usage firewall (power-intensive apps)].


3. Tap [KKBOX].


4. Enable the [Keep running after screen off] option.



5. Relaunch KKBOX and see if the problem is solved.