Using the phone : Adjusting the telephone settings : Changing the earpiece and speaker volume
Changing the earpiece and speaker volume
You can set the volume of the earpiece and speaker at 5 levels independently of each other.
During a conversation
 
The setting is automatically saved after around 3 seconds without saving.
In idle status
For the earpiece:
*Earpiece: . . .  use to set the volume
For the speaker:
* Speaker    . . .  use to set the volume
Save settings:
*Save
 
Changes are only saved permanently in Profile Personal.