1.Lock your device quickly via shortcut and notification bar icon,
2.After locking, you can set the screen timeout or let it to turn off immediately.
3.When screen was turnded off, you can turn on screen by the proximity sensor, you can via Menu->Settings to enable or disable it.
More features will be added in the future. if you have some good ideas, you can send the feedback to the author via E-mail. You can find the E-mail adderss in the about dialog.
Free with ads. The internet permissions are required for Admob.
Notice, this app is tested on Samsung Galaxy S5600.