I wasn't able to find any others post on this so here it goes. I use my BT headset for calls while at home and while driving. I normally use the onscreen display for toggling mute and ending calls. This worked fine on my Moto Droid as the screen stayed on, but my Evo screen always goes black during the call. I know it should turn off if I hold the phone to my face, but I thought it should stay on if nothing interferes with the sensor (the phone is either laying on my desk, on the kickstand, or on my dashboard). Any setting to have the screen stay on during calls? Thanks.