I recently bought a lumia 625 and I can't understand what "Prevent accidental camera launch when phone is locked" under photos+camera settings really does. I have checked it and when I am in lock screen if I press and hold the camera button the camera app launches.
I don't want the camera to start if the button is pressed unless if I have unlocked the phone.
I don't want the camera to start if the button is pressed unless if I have unlocked the phone.