Two lines, one idea

A phone case solves one problem by creating another. It stops the glass cracking, and in exchange it hides the industrial design you paid for — the finish, the machined band, the camera array, the logo, the colour you spent ten minutes choosing. Most people accept that trade on day one and never revisit it.

Corners4 revisits it. A dropped phone almost always lands on a corner: that is where the impact concentrates and where the glass fails. So the material goes there and nowhere else. Four small pieces, machined from aircraft-grade aluminium, bonded to the four corners of a bare iPhone. The back is bare. The sides are bare. The camera plateau is untouched. From the front, the phone is the phone.

That constraint drives every design decision. There is no version of this product with a rail, a bumper or a back shell, because the moment it wraps the phone it has become the thing it was made to replace.

What the corners actually do

• They take the corner impact, which is where drops concentrate.
• They sit proud of both glass faces, so the phone rests on aluminium rather than on its screen or its rear glass when you set it down.
• They hold the phone at an angle on its long edge, which makes it a stand for video without anything folding out.
• They come off. The adhesive and pretreat are engineered to be completely non-destructive, and every set ships with a second full set of strips so it can be moved to a new phone or re-applied.

The same product exists in two moods, and they are genuinely different propositions rather than a good/better/best ladder.

Originals — the quiet one

Four polished domes. No motif, no sculpting, nothing to read. Originals are for people who want the protection argument without a second aesthetic argument on top of it — the corners register as punctuation on the phone rather than as an object in their own right. Four finishes: Carbon, Titanium, Gold and Bright Silver.

Icons — the loud one

Sculpted corners, made and finished the same way, that turn the phone into something you are wearing. The Skull is ornamental and aggressive. The Buddha is calm and densely textured. Icons are collectibles first and accessories second, which is why they are released as designs rather than as SKUs, and why the antique finishes matter as much as the sculpting.

Both lines use the same aluminium, the same hard-anodising process, the same adhesive system, and the same device-specific internal geometry. A set is machined for one iPhone body, which is why you choose your phone before you choose anything else.