From the home screen and within most apps, you can see the Notifications bar across the top of the screen. This bar displays information on the current status of your Optimus U.
Status icons
The following icons indicate the status of your phone:
3G in use
Connected to a Wi-Fi network
Bluetooth is on
Connected to a Bluetooth device
Airplane mode is set
Alarm is set
Signal strength
Speakerphone is on
GPS is on
Receiving location data from GPS
Roaming
No signal
No microSD card installed
Vibrate mode
Ringer is silenced
Phone microphone is muted
Battery is very low
Battery is low
Battery is partially drained
Battery is full
Battery is charging
Notification icons
The following icons indicate that you've received a notification:
New text or multimedia message
Problem with text or multimedia message delivery
New Google Talk message
New voicemail
Upcoming event
Data is syncing
Problem with sign-in or sync
New email
An open Wi-Fi network is available
Phone is connected via USB cable
3 more notifications not displayed
Call in progress
Call in progress using Bluetooth headset
Missed call
Uploading data
Downloading data
Download finished
Connected to VPN
Disconnected from VPN
Song is playing
USB debugging connected