Notification icons report the arrival of new messages, calendar events, and alarms, as well as ongoing events, such as when call forwarding is on or the current call status.
When you receive a notification, its icon appears in the Status bar, along with a summary that appears only briefly. For a table of notification icons, see Notification icons.
If your phone uses a trackball light for notifications, the light pulses once or repeatedly when you receive a new notification. Depending on your settings and the model of your phone, you may also hear a notification sound, the phone may vibrate, and LEDs may blink. These settings and adjusting sound volume and other general notification settings is described in Sound settings.
Applications whose activities produce notifications, such as Gmail and Google Talk, have their own settings, which you can use to configure whether and how they send notifications, whether they sound a ringtone, vibrate, and so on. See the documentation for those applications for details.
On the Home screen, you can also press Menu and touch Notifications.
The Notifications panel displays your wireless provider and a list of your current notifications. Notifications about ongoing activities are listed first, followed by Notifications about events, such as new mail notifications or Calendar reminders.
The Notifications panel closes. What happens next depends on the notification. For example, new voicemail notifications dial your voicemail box, and network disconnect notifications open the list of configured networks so you can reconnect.
Touch Clear at the top right of the panel.
Drag the tab at the bottom of the Notifications panel to the top of the screen. Or just press the Back button.