8. About the Exclusive USB Audio Access Mode
Due to system and hardware differences of certain Android mobile phones, there may be some permission conflicts and compatibility issues when they are working in the Exclusive USB Audio Access Mode. Here are some situations we have noticed.
1. Mobile phones without physical volume buttons (like the HUAWEI Mate30 Pro): when playing music on the FiiO Music App in the Exclusive USB Audio Access Mode, we can adjust the volume through the volume bar (slide up from the bottom right edge in the now playing page to call up the volume bar).
2. For some mobile phones, third-party apps are forbidden in the background by default in their power management policies. This will cause a stop on the playback after a few seconds when the music app is working in the Exclusive USB Audio Access Mode. If it happens, please set the app to stay working while asleep in the battery management setting of the mobile phone.
3. When the music app is working under the Exclusive USB Audio Access Mode, the sound may be stuttered or paused when operating other apps. We are working on this issue. It is suggested to focus on listening to music when using the Exclusive USB Audio Access Mode, or disable the Exclusive USB Audio Access Mode when listening to music.