To set your device to silent mode
1Press and hold down the power key 
until the options menu opens.
2In the options menu, tap 
. 
appears in the status bar.
To enable touch tones
1From your Home screen, tap 
.
2Find and tap Settings > Sound.
3Mark the Touch sounds checkbox.
To select the notification sound
1From your Home screen, tap 
.
2Find and tap Settings > Sound > Default notification sound.
3Select the sound to be played when notifications arrive.
4Tap Done.
Time and date
You can change the time and date on your device.
To set the date manually
1From the Home screen, tap 
.
2Find and tap Settings > Date & time.
3Unmark the Automatic date & time checkbox, if it is marked.
4Tap Set date.
5Adjust the date by scrolling up and down.
6Tap Done.
To set the time manually
1From your Home screen, tap 
.
2Find and tap Settings > Date & time.
3Unmark the Automatic date & time checkbox if it is marked.
4Tap Set time.
5Scroll up or down to adjust the hour and minute.
6If applicable, scroll up to change am to pm, or vice versa.
7Tap Done.
To set the time zone
1From your Home screen, tap 
.
2Find and tap Settings > Date & time.
3Tap Select time zone.
4Select an option.
Screen settings
To adjust the screen brightness
1From your Home screen, tap 
.
2Find and tap Settings > Display > Brightness.
3Drag the slider to adjust the brightness.
4Tap OK.
The brightness level affects your battery performance. For tips on how to improve battery performance, see Improving battery performance.
To adjust the idle time before the screen turns off
1From your Home screen, tap 
.
2Find and tap Settings > Display > Sleep.
3Select an option.
To turn off the screen quickly, briefly press the power key 
.
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