Help Adjust call volume while talking?

[bobcatpilot]

Is there a way to adjust the call volume if the screen locks during a call? Mine seems to lock pretty quick and the only way I can adjust the volume is if I hit the power button first. It seems like the volume rocker should work just like when you're using a music app (sound adjusts even with screen timed out).

Thanks in advance.

 

[Szadzik]

Mine does not lock the screen unless IPress the power button.