Please tell us some basic information before asking for help:
Model Name: ROG Phone 3
Firmware Version: Latest
Rooted or not: Not
Frequency of Occurrence: Always
APP Name & APP Version (If your issue relates to the app): Any Microphone Activated Apps
In addition to information above, please also provide as much details as you can, e.g., using scenario, what troubleshooting you've already done, screenshot, etc.
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So here is the thing, Microphone works fine in ROG Phone 3 no issue. But the moment I connect my hdmi for streaming and I activate my microphone in game for communicating. The audio will cut out and starts playing through phone speakers. Thus only sending video through HDMI.