Time to remove the mainboard. The only thing left to do before we can pull it out is to disconnect the ribbon connector at the top for the media card slot.

Lift the board up near the top of the phone and slide it out away from the bottom of the phone and it should come out easily.

Take care when removing the mainboard, as some of the tactile buttons from the side of the phone may fall out. These small pieces are easy to lose, so if they fall out make sure to remember where they went and put them back or set them with the rest of the parts. Don't forget to reattach the buttons to the phone's lower case before replacing the mainboard!