Selecting Alert Volume and Vibrate settings
1.Press Phone/Send .
2.Open the menus .
3.Select Options, and then select Sound Preferences.
4.Select the Alert Volume pick list and select a volume level.
5.Select the first Vibrate pick list and indicate if you want your phone to vibrate when you receive a call or alert and the Ringer switch is set to Sound On.
6.Select the second Vibrate pick list and indicate if you want your phone to vibrate when you receive a call or alert and the Ringer switch it set to Sound Off.
7.Select Done.
Adjusting call or music volume
While a call is in progress, press the Volume button on the side of your Treo™ 650 smartphone to adjust the call volume. While music is playing, press the Volume button to adjust the music volume.
Adjusting ringer volume
When a call is not in progress and music is not playing, press the Volume button on the side of your smartphone to adjust ringer volume, and then press the Side button to confirm your selection.