The midframe is almost free. The front shell secures it with clips, alignment posts, and ports along the top edge.

Rotate the device so the power button is closest to you.

Grip the bottom arms of the midframe and brace your other fingers against the front shell.

Use your fingers to pry the bottom edge of the midframe away from the front shell.

If you feel resistance, the antennas have re-adhered to the front shell. Be gentle and stop prying to check the antennas, if necessary.

It may be helpful to stand the Steam Deck OLED on its top edge to see the antennas as you pry.