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I wanted the jet black iPhone 7 Plus at the time, and this super-thin case gets my matte black phone that look.
Mason Cases makes some of the slimmest snap-on cases you can get without switching to a vinyl wrap or Plasti Dip. This M3 in jet black hugs the iPhone and turns a matte black phone glossy in under a minute. Mason sells direct, so the button below goes to a similar ultra-thin glossy black hard case for the iPhone 7 Plus on Amazon.
- About as slim as a case can be
- Gives a matte black iPhone a jet black look
- Fit looks factory: edges come right up to the glass
- Installs in seconds
- Thin glossy plastic will show scratches over time
- Light protection; it is not heavy-duty armor
▶ Watch the full review on YouTube
Jet black in under a minute
I have a matte black iPhone 7 Plus. Snapping on this case, top first to get around the buttons and then pressing on the bottom, took seconds in real time.
With the screen off, the whole phone looks glossy jet black. At a glance you would never guess it is the matte version.

Fit and cutouts
The edge comes right up to the glass. The power button sits perfectly flush, the button cutouts are spot-on, and the holes line up with the speakers and Lightning port exactly.
Around the camera, microphone and flash it just looks like a factory fit.

About scratches
Shiny, super-thin plastic tends to show scratches. It is just the nature of the material, because it has to flex to be that thin.
Mason told me they do something in the paint or finish to reduce micro scratches, and you can feel the difference. Nothing is perfect, but I would rather have wear on the case than the phone, and you can always pick up a few cases in different colors.

About the buy link
Mason Cases sells through its own site, not Amazon, so the button goes to a similar ultra-thin glossy black hard case made for the iPhone 7 Plus. It is a different brand, so check the listing for its fit and finish.
Verdict
For protection plus a little style, I love these slim cases. Just understand they are inexpensive shells that eventually wear and need replacing, not a $500 piece of protective hardware.
FAQ
How thin is the Mason M3 case?
About the slimmest thing you can put on your phone short of a vinyl wrap or Plasti Dip.
Will a glossy case scratch?
Yes, over time. Mason says its finish helps reduce micro scratches, but thin plastic will show wear.
Is it hard to install?
No. Do the top first around the buttons, then press the bottom in. It took me seconds.
Is this an affiliate link?
Yes. The buttons are #ad affiliate links, and as an Amazon Associate I earn from qualifying purchases. It costs you nothing extra.
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