Use the plastic opening tool or spudger to gently lift up on the middle logic board and remove it from the frame.

This board controls the touch sensors on the front glass.

This may require some extra force to loosen up the glue under the board. Make sure to apply force evenly around the edges.

The Touch control board has fragile ribbon cables. Make sure to not twist or rip these cables while separating it from the frame and working around the board.