I'm sure everybody know that a sim card can hold data ( information ) like your account info and your contact. But check this out what you know about this... Software as an windows mobile and android is now being put on sim cards to be uploaded onto phones... SK Telecom seem to be the first to shove Android onto a sim. Not only that the dudes over at engadget previews it in one of there videos... check it out after the break. p.s. this will open up doors for you to add different softwares onto your phone without hacking it and voiding your warranty...