I have an S22, Osmo Mobile 6, and Poly Focus 2 headphones. My S22 can be connected to many BT devices at the same time.
For some reason, the Mimo app is not using the microphone from the BT headset. The headset works in many other apps.
Please don't tell me some such nonsense that this isn't supported because the phone uses BT to control the gimbel.

Hi there. Thank you for reaching out. Currently, this function is unavailable due to compatibility issues but we'll forward this feedback to our developers. After the evaluation of the engineers, significant suggestions or requests will be implemented via the firmware update, app update, etc. For any updates, please stay tuned to the latest news on our DJI official website at www.dji.com. Thank you for your valued support.