Nokia N97 mini User Manual page 24

You have set the device to scan for wireless LANs, and
a wireless LAN is available (network service).
A wireless LAN connection is active in a network that
uses encryption.
A wireless LAN connection is active in a network that
does not use encryption.
Bluetooth connectivity is activated.
Data is being transmitted using Bluetooth
connectivity. When the indicator is blinking, your
device is trying to connect with another device.
A USB connection is active.
Synchronisation is in progress.
GPS is active.
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