[APP] WM65 SmartLock / WM61 csdevctrl low memory wm device lock
 

Try it just get this from others forum and it's free....

Auto Lock v6.06 (CSDEVCTRL)

The locking can be activated at the following events:
1. After a specified period of idle time (no screen tapping or touching the keyboard).
2. After the device has waken up.
3. During a call ("In-Call Locking" Partial or Full).
4. Gesture Left or Right to unlock


WM6.5 SmartLock
1 WM 6.5 use new lockscreen . gray when in wm6.1 or older
2 lockscreen when startup
3 lockscreen when standy
it works well after reboot.

Original Link: