HTC Aria Quick Start Manual page 28

Important icons and indicators
GPRS available.
New Gmail message
New Exchange ActiveSync
or POP3/IMAP email
New SMS/MMS
New voicemail
Upcoming event
Song is playing
New tweet
FM Radio in use
Call in progress
Missed call
Call on hold
Call forwarding on
Uploading data
Downloading data
Android Market application
downloaded and installed
Notification LED
Tells you when the battery is fully charged, low
in power, is being charged, or when you have a
pending notification, such as a missed call.
3G available
Connected to AT&T 3G
Signal strength
No signal
Roaming
Connected via Wi-Fi
Connected via Bluetooth
Airplane mode
Alarm is set
Speakerphone on
Data synchronizing
Vibrate mode
Phone speaker is mute
Battery is very low
Battery is full
Battery is charging