For those having trouble reinstalling the Aerial Plate, it is probably a matter of alignment. The recessed edge of the plate slides all the way up under the lip edge of the case. I used my iFixit bent tweezers spread and inserted through a couple holes to lightly pull up on the grate while pushing on the flat edge. No hard force was required. It just snapped right in. You'll know when it is home because it will be a snug fit to the edge of the case inside the arc of the opening.
Note That the arc of the cowling does not butt to the edge of the chassis. But slides in below it. Once the two screws on the heat sink are aligned with the cowling holes, it's good to go.
I believe the removal of the jack from the iPhone was to increase it's water resistance. Not as much of an issue with laptops.