Low incoming phone volume & fader question.

[RobN-RG]

Does anyone know how to increase the volume of a phone call?  I made one from the car for the first time and in order to hear the person I was taking to I had to turn the volume up to max.  Other cars I've driven, I would have permanent hearing damage, but in my Yaris, at say 10-15 volume, I can hardly hear anything.

It's supposed to have the "JBL® Premium Sound System with 8 Speakers" but so far, my experience of the sound is not great.  Normally at central fade position or one back in other cars, I can hear sound from the back (like I'm in the middle of a 4 speaker setup).  In the Yaris at default, I can only hear the front Speakers, and only if I fade almost totally back can I hear the rears.

[Roy124]

Same phone issue in Corolla 2020