I have an old Vodafone i580 with a Skinny SIM in it for  somewhere to keep it at present.  Every time I turn on the fone it sends a SMS to  my fones with XT and 2D SIMS in them with " +64204 Skinny number (time stamp) Keep this message Sender: Paul galaxy 3 EMEI: XXXXXXXXXXXX  which is the EMIE of the i580.  Both of these other fones have at one stage had the Skinny SIM in them  but my Galaxy S3 with a Vodafone SIM in does not receive this message even though it  has had the Skinny SIM in at some stage..

Any ideas.  It's not a biggy as the i580 is a spare fone..