According to WP Central PR 2.0 firmware update for Nokia Lumia smartphones with Windows Phone 8 OS, will bring up double tap to unlock just like they way used in Nokia N9 and an always on sleeping screen with clock and notifications as its the part of Nokia’s smartphone tradition, many users simply love these simple but awesome features that are exclusive to Nokia’s smartphones. Below you can have a look at short demonstration video of these two functions which are coming in PR 2.0 firmware update for Nokia Lumia WP 8.0 smartphones.