Nokia 2660 User Manual page 25

Options > Insert and the desired type of attachment.
To send the message, press the call key.
The message type is changed automatically depending on
the content of the message. Operations that may cause
the message type to change from text message to
multimedia message include, but are not limited to, the
following:
Attach a file to the message.
Request a delivery report.
Set priority for the message to high or low.
Add a Cc or Bcc recipient or subject to the message.
When the message type changes to multimedia message,
the phone may briefly display Message changed to
multimedia, and the header text of the message editing
window changes to New multimedia. Check the header
text for message type.
Service providers may charge differently depending on the
message type. Check with your service provider for details.
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