Originally Posted by John Clark
sometimes it takes a little force. Slide the latch toward the left to unlock. Lay the sim on the board then close the latch and slide back to the right.
The microSD card slot is different. Slide to the left to open, then put the mem card in the latch itself and close the SD card and latch together and slide to the right.
thank you so much. I was very eager to get a response