Telemarketer call.  Did not recognize the number, but answered anyway.  It was a message about deals on cruises.  The message ended with "Press 1 to speak to a representative" or "Press 2 to be taken off our call list".  My cell phone was locked, and the caller hung up before I could open the key board. Called back on that number and got a message that the number that had just called me was not a valid number.