A few things really struck me while making my way through this teardown of the iPhone 7 Plus.
The iPhone cover/display flips to the side, like opening a book. Good to know this if you ever plan to open yours.
The edge of the iPhone cover is rimmed with a caulk-like adhesive, which acts like a gasket to keep liquids out, aid waterproofing (water-resistancing?)
The iPhone is filled with lots of tri-point screws, similar to the ones used inside the Apple Watch.
Finally, I found this to be an incredibly good looking design, at least to my untrained eye. Good stuff.