Are you still referencing to this issue here?
I just tested this with FP4 on 1.17-s, doing calls
- With bluetooth headphones: Volume slider offers a wide range to lower or increase the volume, from very loud to nearly inaudilbe, best
- With USB Headset: Volume slider is very small, only allows to choose between a limited range of volumes, lowest volume is low, though (like it should be)
- Just speaker, without any headphones: Volume slider is very small, only allows to choose between a limited range of volumes, but the lowest volume level is quite loud in comparison to the above.
So, yeah, if those small volume sliders when calling someone are not a “feature” of Android 12, the lowest volume option on built-in speakers.should not be that loud, I guess.