Earpiece: Volume can be set at 5 levels for the earpiece and headset. Speaker: Set the volume at 5 levels. Save
Accessing the settings during a call for the mode currently in use (handsfree, earpiece, headset):
Press side keys / (Handset) or control key . The setting is saved automatically after 2 seconds or press the display key Save. The screen reverts back to its previous display.
Changes are only saved permanently in Profile Personal (Sound profiles).