Changing Your Phone’s Settings 87Screen timeoutThis setting lets you set the display backlight to remain on for 8,15, or 30 seconds; or for 1, 2, 10, or 30 minutes with no activity.Note: Prolonged backlight use drains your battery faster.Location & security settingsTouch this option to access the following settings:My LocationUse these settings to determine what location method(s) areavailable to emergency services and location-based Apps.Use wireless networksWhen enabled, this setting lets your phone use cell towers,femtocells, and/or Wi-Fi hot spots to determine your location foremergency and location-based services.Use GPS satellitesWhen enabled, this setting lets your phone use GPS satellites todetermine your location to street-level for emergency andlocation-based services.Note: Prolonged GPS satellite use drains your battery faster.Screen unlockSet up screen lockUse these settings to determine the unlock method for yourphone.NoneDisables the other screen unlock settings and returns you to thedefault unlock swipe.PatternWhen enabled, this setting requires that you draw a pattern onthe display to unlock your phone, instead of the default singleswipe across the display.PINWhen enabled, this setting requires that you enter a PersonalIdentification Number (PIN) to unlock your phone, instead of thedefault single swipe across the display.PasswordWhen enabled, this setting requires that you enter a numericpassword, an alphabetical password, or combination of lettersand numbers to unlock your phone, instead of the default singleswipe across the display.