I recently switched from Android to Windows Phone 8 (Nokia Lumia 520). Is there an app that I can use to turn off the display and lock the phone? I would at least like something that turns off the display. I do not have double tap to wake feature or face down to turn display off on the Lumia 520.
Clarification: I am looking for an app (which can be used as a live tile), which when clicked, will turn off the display. I want to skip using the power button.