Help protect your personal information and help prevent others from using
HTC Desire 550
without your permission.
Choose to set a screen lock pattern, numeric PIN, or other means of locking your phone. You'll be asked to unlock the screen every time
HTC Desire 550 is turned on or when it’s idle for a certain period of time.
Home screen, tap
Select a screen lock option and set up the screen lock.
On the Security screen, tap
, then specify the idle time before the screen locks.
Make pattern visible
if you don’t want your screen lock pattern to display as you draw it onscreen.