162. Touch and sweep across the screen, either to the leftor right, as indicated on the screen.Note: You can choose the type of Screen Unlock you want touse, from Pattern, PIN, or Password. For moreinformation, refer to “Location and Security” onpage 140.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“Task Manager” on page 14.• If your device is frozen and unresponsive, press and hold thePower/Lock Key for 8 to 10 seconds.Android System RecoveryAndroid System Recovery is used for Google updates. Theaverage user should never need to perform a systemrecovery.Note: If you entered this menu by mistake, use the Volume Up/Down key to select reboot system now, then press(Home). Your device then continues to boot up.