
Setting system volume levels
You can set the volume level for system sounds, such as the tone that plays when you synchronize.
1.Go to Applications  and select Sounds
 and select Sounds  .
 .
2.Select the Application pick list and select General.
3.Select the System Volume and Game Volume pick lists and select a volume level.
4.Select Done.
If the Ringer switch is set to no sound, the ringer setting overrides the sound settings and all sounds are turned off.
Your smartphone includes a silent alarm that can vibrate even when the Ringer switch is set to Sound Off.