Nokia 6120 classic User Manual page 16

The phone is in offline mode and not connected to a cellular network. See
"Offline profile," p. 15.
You received one or several messages to the Inbox folder in Messaging.
You received new e-mail in your remote mailbox.
There are messages waiting to be sent in Outbox. See "Outbox," p. 35.
You have missed calls. See "Recent calls," p. 28.
Shown if Ringing type is set to Silent and Message alert tone and E-mail
alert tone are set to Off. See "Profiles," p. 62.
The phone keypad is locked. See "Keypad lock (keyguard)," p. 18.
The loudspeaker is activated.
An alarm is active.
The second phone line is being used. See Line in use in "Call," p. 74.
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All calls to the phone are diverted to your call mailbox or to another
number. If you have two phone lines, the divert indicator is for the
first line and for the second.
A headset is connected to the phone.
A loopset is connected to the phone.
The connection to a Bluetooth headset has been lost.
A data call is active.
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A GPRS packet data connection is active. indicates the connection is on
hold and that a connection is available.
A packet data connection is active in a part of the network that supports
EGPRS. indicates the connection is on hold and that a connection is
available. The icons indicate that EGPRS is available in the network, but
your device is not necessarily using EGPRS in the data transfer.
A UMTS packet data connection is active. indicates the connection is
on hold and that a connection is available.
Bluetooth is switched on.
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