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Description
Why the Samsung Galaxy S9 Plus Slim Aluminum Case in Black Is Essential for Field Workers and Metal-Case Devotees
Plastic cases bounce; metal cases announce. The Samsung Galaxy S9 Plus Slim Aluminum Case in Black machine-fits a four-piece aluminum frame around your 6.2-inch Galaxy S9 Plus (2018), screwing together with the included driver into a Gundam-style exoskeleton that takes scratches, bumps, and full drops without flinching. A treated rubber inner lining cushions the phone against the metal and keeps dirt and stains off the frame, while the open screen face pairs perfectly with our S9 Plus tempered glass protectors. Built for field engineers, site supervisors, motorcyclists, gear-heads, and anyone who believes a flagship deserves real metal, this is the best slim aluminum Galaxy S9 Plus case for industrial-grade protection without the brick. Welcome to the Gorilla Family.
Key Features
- Stealth black finish: glossy black aluminum with a mechanical, engineered look that turns heads without shouting.
- Premium materials: high-quality aluminum metal frame and back with a smooth treated rubber inner lining.
- Case type: four-piece screw-together metal bumper and back cover — the frame locks around the phone like a chassis.
- Gundam-style design: angular machined lines that make the case as much hardware statement as protection.
- Shock and dirt protection: shock-absorbent, shatterproof, anti-scratch construction that also resists dirt and stains.
- Screen protection: a raised metal lip rings the display — and the open face works great with our Galaxy S9 Plus tempered glass screen protectors.
- Camera protection: a recessed opening keeps the dual cameras and fingerprint sensor below the metal surface.
- Heavy-duty drop rating: the screwed aluminum frame over rubber is rated for 10 ft / 3 m drops onto hard surfaces.
- Charging compatibility: charges by USB-C cable through the port cutout; the aluminum body blocks Qi wireless charging, and this is not a MagSafe case.
- Tool included: a screwdriver ships in the box — assembly takes about five minutes.
- Compatibility: fits the 6.2-inch Samsung Galaxy S9 Plus (2018) ONLY. It does NOT fit the smaller Galaxy S9, the S8, S8 Plus, Note 9, or any S10 or newer model.
Materials Explained — What Aluminum and Treated Rubber Actually Feel Like
Aluminum is the metal of aircraft skins and high-end bicycle frames — light for its stiffness, naturally corrosion-resistant, and cool to the touch. Machined into four interlocking pieces and screwed tight, it forms a continuous frame that spreads impact energy across the whole case instead of letting one corner absorb everything.
Between the metal and your phone sits a layer of smooth, treated rubber — the same damping principle as engine mounts — that soaks up the sharp spike of a drop and keeps the aluminum from ever touching the S9 Plus's glass back. The treatment resists dirt and stains, so the inside stays as clean as the outside.
The whole assembly weighs about 2.8 oz (80 g) and adds roughly 3 mm of thickness — genuinely slim for screwed-together metal, which is exactly the trick this design pulls off.
Browse More Galaxy S9 Plus Cases
Comparing metal against wallet and rugged options? Browse the full Galaxy S9 Plus Cases collection, shop now and find the right protective phone case for your lifestyle.
Real-World Use Cases
- The Site Supervisor: drops the phone from scaffold height onto compacted gravel and picks it up with a scuff on the frame, not the phone — that is the 10 ft / 3 m rating earning its keep.
- The Motorcyclist: trusts a screwed frame that cannot pop open on impact the way snap-on cases do.
- The Machinist: appreciates a case that looks like it came off the same CNC mill as his tools.
- The Commuter: gets premium-metal looks at the morning meeting and drop protection on the platform.
- The Gift-Giver: finds the rare under-$50 gift that feels engineered rather than bought.
Feature-to-Benefit Mapping
| Feature | Benefit |
|---|---|
| Four-piece screw-together aluminum frame | Cannot pop open in a drop — rated for 10 ft / 3 m onto concrete |
| Treated rubber inner lining | Absorbs shock and keeps dirt and stains off the phone body |
| Raised metal screen lip | Face-down landings touch metal, never glass |
| Slim 3 mm metal profile | True aluminum armor that still fits pockets and car mounts |
| Included screwdriver | Five-minute install and lifetime re-tightening, no extra tools |
Step-by-Step Installation Guide
- Clean your Galaxy S9 Plus with a microfiber cloth — and install a tempered glass screen protector first if you use one.
- Loosen the frame screws with the included screwdriver and separate the four case sections.
- Seat the phone against the rubber-lined back section, aligning the camera and fingerprint openings.
- Fit the frame pieces around the edges and drive the screws snug in an alternating pattern — firm, never forced.
- Verify the buttons, USB-C port, headphone jack, speaker, and fingerprint sensor, then check the frame edges sit flush all around.
Troubleshooting and Tips
- Screws loosening after months of vibration? Re-snug them with the included driver every few months — a 30-second ritual.
- Wireless charger not responding? Aluminum blocks Qi by physics, not defect — charge by USB-C cable with the case on.
- Worried about signal? The bumper design keeps the antenna bands largely unobstructed — most users notice no meaningful difference in normal coverage.
- Buttons feel firm at first? The metal-backed button covers break in within the first week and stay crisp.
- Cleaning the case? Wipe with a slightly damp cloth and dry — avoid alcohol wipes, which can dull the glossy black coating over time.
FAQs
Which phones does this case fit?
It fits the 6.2-inch Samsung Galaxy S9 Plus (2018) only. It does NOT fit the smaller Galaxy S9, the S8 or S8 Plus, the Note 9, or any S10 or newer Samsung model. A separate S9 version is available.
What comes in the box?
One genuine aluminum shockproof case (four sections) and a screwdriver for assembly.
Does it work with MagSafe or wireless charging?
No — the aluminum construction blocks Qi wireless charging, and this is not a MagSafe case. Charge through the USB-C cutout with any cable.
What is the drop protection rating?
The screw-locked aluminum frame over the rubber lining is rated for 10 ft / 3 m drops onto hard surfaces.
Does the fingerprint sensor still work?
Yes — the rear opening exposes the sensor below the cameras completely, with a metal rim that guides your finger to it.
Are buttons and ports accessible?
Yes — machined cutouts serve the USB-C port, headphone jack, and speaker, and the frame's button covers keep power and volume fully clickable.
Can I use a screen protector with it?
Absolutely — the open screen face is designed to pair with our Galaxy S9 Plus tempered glass protectors for complete front-and-frame coverage.
Is there a lanyard attachment?
No dedicated lanyard hole on this design — see our phone rings and straps if you want a tether.
Will the black coating chip or fade?
The finish is bonded to metal and far outlasts painted plastic; years of hard abrasion may polish the high edges, which most metal-case fans wear proudly.
Does a metal case hurt reception?
The segmented bumper layout is designed around the S9 Plus antenna lines — in normal coverage areas users report no noticeable change.
How heavy is it?
About 2.8 oz (80 g) — noticeably more solid than TPU, dramatically lighter than full-armor tanks. That balance is the whole point.
Is it professional enough for the office?
Yes — the machined black aluminum reads as precision equipment, equally at home beside a laptop or a torque wrench.
Is this a good gift?
An easy one for engineers, riders, and metal-anything fans — and free 30-day returns cover you if they prefer a different style.
Do I need my own tools?
No — the screwdriver is included, and assembly takes about five minutes the first time.
What is the return policy?
Yes — Gorilla Cases offers free 30-day returns on all Galaxy S9 Plus cases. If the case doesn't fit your Galaxy S9 Plus or you're not satisfied, contact our team within 30 days for a fast replacement or full refund. No restocking fees.
Why Gorilla Cases?
Gorilla Cases exists because some phones deserve armor that is engineered, not just molded. The Gorilla Family trusts us because we drop-test every design and describe honestly — metal blocks wireless charging, screws need an occasional snug, and we tell you both up front — with free 30-day returns behind every order. Bolt it on and stop worrying. Shop now at gorillacasestore.com
Read More From Gorilla Case Blogs
Want to see how aluminum armor scaled up across the Galaxy line? Read S21 Ultra Aluminum Military Case Shockproof Metal Armor, then compare with Galaxy S24 Plus Heavy Duty Aluminum Tactical Case.