By Will, 10 August, 2014 Forum iOS and iPadOS When I turn voice over on then voice over announces "screen curtain on" then IPhone screen turns totally black How can I turn off screen curtain? Options Log in or register to post comments Comments Tap three times with three Tap three times with three fingers on the screen. Then screen curtain turns off. It's four taps if zoom is enabled If the zoom feature in accessibility settings is turned on, you need to do a three-finger quadruple-tap to toggle the screen curtain. If the zoom feature is disabled, then it's a three-finger triple-tap. If you have a Bluetooth keyboard, you can also toggle the screen curtain by pressing Control-Option-Shift-S.