I have also received the following message on my prepaid optus mobile in sydney Thai GSMA.  association of Thailand. To get your check, send ur name & address by sms to +2348O68695O22. I think, Of course this is a scam from Nigeria.
message was as follows;

sender name: SARKOZY;

“U’ve won 200,000.00 Dollars in a loto organized by the Thailand branch of the GSM Association. Send ur name/address by sms to +2348068695022  so we can post ur check.”