Lil'??? This is a great tip. I also noticed that the sounds can be tested. While doing this you can raise the volume. I wonder if this raises the master volume for the earpiece. So when you adjust the volume during a call, it makes it sounds louder.
I tried that but nothing happens, when i close the phone i cant to anything with the volume keys, can you please email me? i ll really appreciate it. Tell me on the mail step by step from the icons menu.