Dell Streak User Manual page 27

Airplane mode is enabled
Bluetooth is enabled
Connected to a new Bluetooth
device
The notification area may also display some of the following icons:
Missed call
Call in progress
Call on hold
Call forwarding is enabled
Microphone is on mute
The SD card is safe to remove
No SIM card is inserted
Ongoing data synchronization
If the GPS satellites function is
enabled, this icon appears when
you use Google Maps
New SMS/MMS
New e-mail
Upcoming calendar event
USB cable is connected
A Wi-Fi network is found
Download in progress
Understanding Your Dell™ Streak
27