Hi. I bought an n9, for 2 weeks ago, but now it don't want to recognize my sim card so i try another sim but the same problem sometime it accept the sim.but now won't so anyone can help me !!

thanks

This is a very lo-fi suggestion, but try putting a piece of paper behind the sim card in the tray. I had a similar issue, and it turned out that the sim card was not forward enough in the tray for the contacts to touch.