When a call comes in the lock screen changes to an answer screen and you swipe to answer the call. No need to push the power button.
If you navigate away from the phone call there is an icon in the notification area that you can use to get back to the call. If the other person hangs up first, that icon is gone, and no need for you to hang up.
If I navigation away from the call screen, if I try to grab the notification screen the screen blanks on and off, its on when I'm not touching it, off as soon as you touch the screen, anywhere. I have to wait for other person to answer. Really stinks if I call and it goes to voicemail.
Don't grab the notification bar near the sensor -- you're tripping it. IIRC it's to the left of the ear piece. Try using the right side of the notification bar.
Don't grab the notification bar near the sensor -- you're tripping it. IIRC it's to the left of the ear piece. Try using the right side of the notification bar.