bug on 405，406，The sound source is incorrect

[SunDaSora]

The previous connection failure bug has been fixed, but now there is a new problem.When calling or being called on some devices, the ring tone is normal, but the sound source is not correct after connecting. My Redmi K40 will use the speaker to play the conversation.It's like a video call, not a voice call. On the other phone used for the test, whether the camera was turned on or not, his voice came from the earpiece. I think it might be possible to manually add a switch to switch between the speaker and the earpiece, or automatically switch the sound from the speaker or the earpiece depending on whether the camera is on or not。