Hello Gunter.
I asked my colleague working on iOS on this point.
He said that we do not have a way to increase playback/capture gain, as
iOS AudioUnit is already doing it automatically.
You could eventually check logs to see if you can identify the issue, or
send us the logs in response of
How to increase the Audio volume of Linphone on Iphone beyond the standard
control buttons?
The Android Version of Linphone allows to change the Playback gain.
I could not find this option in the Linphone iOS version 4.6.0. Where is it
hidden?
Or is there some other chance to increase
