[namibj]

On my Android (not even particularly recent) the phone earpiece speaker responds to the volume buttons when I'm in a phone call or use it to join a discord (group) voice chat. The latter works very well with voice activation, unless I'm in a loud place, in which case the incompletely filtered background noise causes intelligibility problems when talking over another.

[genocidicbunny]

I'm sure it does, but I speak from experience where there wasn't much of a difference in volume between the earpiece speaker, and the speakerphone. Most people had their earpiece loud enough that if I was close enough I could hear it just as loud as when they used speakerphone mode.

With a lot of (cheaper) phones the speaker is also terrible enough that the different modes don't make much of a difference.