10Locking the device manually Press the Power/Lock Key .Unlocking the device1. Press the Power/LockKey .The locked screen displaysSweep glass to unlock. The day,date, and time also display.2. Touch and sweep across thescreen, either to the left or right,as indicated on the screen.Note: You can choose the type of Screen Unlock you want to use, eitherPattern or Password. For more information, refer to “Location andSecurity” on page 111.TroubleshootingIf your device has fatal errors, hangs up, or freezes, you mayneed to close all programs or reset the device to regainfunctionality.• If your device is still responsive, but a program is frozen, close theprogram using the Task Manager. For more information, refer to “TaskManager” on page 8.• If your device is frozen and unresponsive, press and hold thePower/Lock Key for 8 to 10 seconds.