Remove your suction handle from the screen.

Open your iPhone by swinging the display up from the right side, like the front cover of a book.

Don't try to fully separate the display yet, as several fragile ribbon cables still connect it to the iPhone's logic board.

Lean the display against something to keep it propped up while you're working on the phone.

During reassembly, lay the display in position, align the clips along the top edge, and carefully press the top edge into place before snapping the rest of the display down. If it doesn't click easily into place, check the condition of the clips around the perimeter of the display and make sure they aren't bent.