the sim tray is located on the top of your device... first you need to press the little knob on the top of your phone next to the 3.5mm music jack.. the usb charging latch will open up..

slide the tray next to it ( marked with a line ) towards the earphone jack and release it... You can now pull out the sim tray... On this tray you will find a 6 digit code which will match the same in navifirm..