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change the date and time. 
  To adjust the time zone automatically, touch to turn on 
Automatic time zone. 
  To adjust the time zone manually, touch to turn off 
Automatic time zone and touch Select time zone to set 
the correct time zone. 
  To adjust the time format, touch to turn on/off Use 
24-hour format. 
Changing the Ringtone, Notification 
Sound, and Alarm Sound 
You can customize the default ringtone for incoming calls, the 
default notification sound, and the default alarm sound. 
1.  Swipe up on the home screen and touch Settings > Sound > 
Ringtones. 
2.  Touch Phone ringtone, Default notification sound, or 
Default alarm sound. 
3.  Scroll through the list and select the ringtone you’d like to use. 
You can touch Add ringtone to add additional audio files to 
the list. 
4.  Touch OK. 
Turning System Sounds On/Off  
1.  Swipe up on the home screen and touch Settings > Sound > 
Advanced.