I recieved this email and thought it might be useful to everyone.

Don’t press #90 or #09

If you receive a phone call on your mobile from any person, saying that, that they’re checking your mobile line, and you have to press # 90 or #09 or any other number.End this call immediately without pressing any numbers.There is a fraud company using a device that once you press #90 or #09 they can access your ‘SIM’ card and make calls at your expense.

Forward this message to as many friends as you can, to stop it.
This information has been confirmed by both Motorola and Nokia.
There are over 3 Million mobile phones being infected by this virus in all around the world now.

I have not experienced this myself but I found some extra information on snopes.com.
Please leave a comment if you have had any experience or info about this.