Increase handset volume?
Is it possible to increase the handset volume not just temporally?
I´m driving a truck and it is really difficult for me to understand the person i´m talking with, volume is already set to max.
I figured out that it is possible to increase the volume in ( *#197328640# ) service mode - audio - handset - volume numbers 1 to 4 i set to 100.
Thats working good for me until i reboot, than the settings are reset to default. I already searched for a config file without success.
Maybe someone has more luck?
HTC Blackstone, Iphone 3gs, HTC Hero, Samsung Galaxy S, Samsung Nexus S