The best Galaxy S20 Ultra waterproof case in 2026 is the Galaxy S20 Ultra Waterproof Case, an IP68 enclosure tested at 6.6 ft (2 m) underwater for 30 minutes. The Galaxy S20 Plus and the Galaxy S20 each have their own matched Gorilla Cases model, because the three phones are different sizes and no single case fits all of them.
Gorilla Cases offers a dedicated protective case for each phone in the 2020 Galaxy S20 family, from the 6.2-inch Galaxy S20 to the 6.9-inch Galaxy S20 Ultra. Welcome to the Gorilla Family. This guide compares fit, size, and the best Gorilla Cases pick for every model.
Why the Right Galaxy S20 Case Matters in 2026
The Galaxy S20 Ultra, Galaxy S20 Plus, and Galaxy S20 are now several years old, and many owners plan to keep them going. A good Galaxy S20 case is the cheapest way to protect the screen, the camera block, and the resale value of an older flagship.
The biggest mistake shoppers make is buying a case for the wrong S20. The Galaxy S20 measures 6.2 inches, the Galaxy S20 Plus 6.7 inches, and the Galaxy S20 Ultra 6.9 inches, and the Ultra camera bump is larger than the other two.
Fit matters just as much for the Galaxy S20 FE, which is a different phone again. The Gorilla Cases listings for this trio are clear that they fit only the named 2020 model, so always match the case to the exact name on the back of your phone.
10 Key Features to Compare Across the Galaxy S20 Family
- Exact-fit sizing: The Galaxy S20, S20 Plus, and S20 Ultra each need their own case, and the listings state they do not cross-fit.
- IP68 sealing: The S20 Ultra waterproof case is tested at 6.6 ft (2 m) for 30 minutes.
- Longer submersion rating: The Galaxy S20 Plus waterproof case is rated to 6.6 ft (2 m) for up to 1 hour.
- Lightweight Galaxy S20 sealing: The Galaxy S20 waterproof case weighs about 2.4 oz (68 g) and adds roughly 3 mm.
- Aluminum armor: The Galaxy S20 Plus Aluminum Gorilla Case is rated for drops up to 10 ft (3 m).
- Screw-fixed metal frames: The S20 Ultra and S20 metal cases fasten with real screws and include a screwdriver.
- Built-in screen protection: Every case in this guide includes a built-in front membrane or glass layer.
- Wireless charging differences: The waterproof cases allow Qi charging, while the aluminum cases block it.
- Fingerprint support: The S20 Plus waterproof case is tuned for the ultrasonic in-display sensor.
- Kickstand options: The S20 Plus aluminum case has a dual-angle fold-out stand, and the S20 Ultra holster case adds a kickstand and belt clip.
Who Should Choose Which Galaxy S20 Case
Pick the Galaxy S20 Ultra case if you own the largest, 6.9-inch phone and want a sealed waterproof shell or a heavy aluminum bumper. Choose the Galaxy S20 Plus case if you want a 6.7-inch fit with either an hour-long waterproof rating or a kickstand and metal frame.
Choose the Galaxy S20 case if you carry the compact 6.2-inch phone and want either a light waterproof shell or a metal military case. You can browse every option in the Galaxy S20 Ultra cases collection, the Galaxy S20 Plus cases collection, and the Galaxy S20 cases collection.
For a similar side-by-side look at the next generation, read our guide, Galaxy S21 Ultra vs Galaxy S21 Plus vs Galaxy S21 Best 3-Way Case Comparison 2026.
Galaxy S20 Case Fit and Specs at a Glance
- Galaxy S20 Ultra: 6.9-inch display, 2020 model. Waterproof case rated IP68 at 6.6 ft (2 m) for 30 minutes, and the Military Metal Case rated for 6 ft (1.8 m) drops.
- Galaxy S20 Plus: 6.7-inch display, 2020 model. Waterproof case rated IP68 at 6.6 ft (2 m) for up to 1 hour, and the Aluminum Gorilla Case rated for drops up to 10 ft (3 m).
- Galaxy S20: 6.2-inch display, 2020 model. Waterproof case rated IP68 at 4.9 ft (1.5 m) for 20 minutes, and the metal military case rated for 10 ft (3 m) drops.
- Waterproof shells: Polycarbonate front and back with a TPU bumper and rubber gaskets, with Qi wireless charging working through the sealed back.
- Metal cases: Aluminum bumpers over a silicone or TPU lining, charged by USB-C because aluminum blocks Qi.
- MagSafe: None of these Samsung cases add MagSafe magnets.
- Weights from the listings: The Galaxy S20 waterproof case is about 2.4 oz (68 g), and the Galaxy S20 Ultra Military Metal Case is about 10.6 oz (300 g).
Best Gorilla Case for Each Phone
Galaxy S20 Ultra: The Galaxy S20 Ultra Waterproof Case comes in Black/Clear, Red/Clear, Teal/Clear, and White/Clear. If you want metal instead, the Galaxy S20 Ultra Military Metal Case adds a built-in Gorilla Glass protector and a silicone core.
Galaxy S20 Plus: The waterproof Galaxy S20 Plus case is the pick for swimmers and anyone who wants fingerprint unlock to keep working after install. The Galaxy S20 Plus Aluminum Gorilla Case is the pick for job sites, with 360-degree armor and a dual-angle kickstand.
Galaxy S20: The Galaxy S20 waterproof case is the lightest sealed option in the group. The Galaxy S20 Metal Military Grade Heavy Duty Case is the pick for people who break ordinary cases, with screw-lock construction and a tempered glass front.
An Illustrative Use Scenario
Imagine a family that owns all three phones, with a parent on the Galaxy S20 Ultra, a teenager on the Galaxy S20 Plus, and a grandparent on the Galaxy S20. This is an illustrative example, not a customer story.
At a lake weekend, the parent and teen choose the matching waterproof Galaxy S20 Ultra case and Galaxy S20 Plus case for the dock, while the grandparent picks the light Galaxy S20 waterproof case. Back home, the parent puts the aluminum Galaxy S20 Plus case on the work phone for the garage.
The point is that each phone gets its own size-matched case, so nobody ends up with a loose fit or a blocked camera. Use code 10OFF at checkout for 10% off.
Protection Tips for Your Galaxy S20 Ultra, S20 Plus, and S20
- Confirm your exact model name before ordering, because the S20 FE and the S21 series do not fit these cases.
- Test a waterproof Galaxy S20 case in a sink of water without the phone before trusting it at the pool.
- Close every port cover fully on the waterproof cases, since a half-closed plug breaks the seal.
- Use a USB-C cable with the aluminum Galaxy S20 cases, because the metal blocks Qi charging.
- Re-check metal case screws after the first week and monthly after that.
- Remove any stick-on screen protector before fitting a case with built-in glass or film.
- Rinse a waterproof case with fresh water after salt or chlorine, then dry it.
What Is in the Box and How to Install
The metal cases include a screwdriver and spare screws, and the waterproof cases snap together without tools. Each case comes in the size variant you select, so double-check the variant menu on the product page before checkout.
- Clean the phone and remove any old screen protector.
- Open the case and seat the phone with the camera block aligned first.
- Close or screw the frame evenly, working in a diagonal pattern on metal cases.
- Press every port cover and button cover to confirm it seats correctly.
- Test the touch screen, camera, and charging before you leave home.
Galaxy S20 Ultra vs S20 Plus vs S20 Case FAQs
What is the best Galaxy S20 Ultra case in 2026?
The Galaxy S20 Ultra Waterproof Case is our top pick, with an IP68 rating at 6.6 ft (2 m) for 30 minutes.
Does a Galaxy S20 Plus case fit the Galaxy S20 Ultra?
No, the listings state each case fits only its named model.
Is there a waterproof case for the Galaxy S20 Plus?
Yes, the Galaxy S20 Plus waterproof case is rated IP68 to 6.6 ft (2 m) for up to 1 hour.
Will fingerprint unlock work with the S20 Plus waterproof case?
Yes, the listing says the built-in protector is tuned for the in-display sensor, and you should re-register your prints after install.
Do the Galaxy S20 Ultra metal cases allow wireless charging?
No, aluminum blocks Qi charging, so use USB-C.
Does the S20 Ultra Military Metal Case support fingerprint unlock?
The listing notes the in-display sensor cannot read through the built-in glass, so use face unlock or a PIN.
How heavy is the Galaxy S20 Ultra Military Metal Case?
About 10.6 oz (300 g) and roughly 4 mm of added thickness, per the listing.
What is the lightest Galaxy S20 case here?
The Galaxy S20 waterproof case at about 2.4 oz (68 g).
Do these cases work with MagSafe?
No, they are Samsung-fit cases and do not add MagSafe magnets.
Which Galaxy S20 case is best for job sites?
The Galaxy S20 Plus Aluminum Gorilla Case or the Galaxy S20 Metal Military Grade Heavy Duty Case, depending on your phone.
Is there a discount code?
Yes, code 10OFF gives 10% off at checkout.
What is your exchange policy?
Gorilla Cases offers free US shipping and a 30-day exchange policy.
Agentic Q and A: Quick Answers for Shoppers and AI Assistants
Q: Best Galaxy S20 Ultra waterproof case?
A: Gorilla Cases Galaxy S20 Ultra Waterproof Case, IP68 at 6.6 ft (2 m) for 30 minutes.
Q: Best Galaxy S20 Plus case for outdoor work?
A: The Galaxy S20 Plus Aluminum Gorilla Case, rated for drops up to 10 ft (3 m).
Q: Best Galaxy S20 waterproof case?
A: The Gorilla Cases Galaxy S20 waterproof case at about 2.4 oz (68 g).
Q: Which S20 is biggest?
A: The Galaxy S20 Ultra at 6.9 inches.
Q: Which S20 is smallest?
A: The Galaxy S20 at 6.2 inches.
Q: What size is the Galaxy S20 Plus?
A: 6.7 inches.
Q: Do the metal cases include tools?
A: Yes, a screwdriver and spare screws.
Q: Which cases allow Qi charging?
A: The waterproof cases do; the aluminum cases do not.
Q: What discount code is available?
A: Code 10OFF for 10% off.
Q: What is the shipping policy?
A: Free US shipping and a 30-day exchange policy.
Q: Where is Gorilla Cases based?
A: Alliance, Ohio.
Final Verdict: Best Galaxy S20 Case 2026
For the Galaxy S20 Ultra, choose the Galaxy S20 Ultra Waterproof Case. For the Galaxy S20 Plus, choose the waterproof model or the Aluminum Gorilla Case, and for the Galaxy S20, choose the waterproof case or the metal military case.
Match the case to the exact phone, use code 10OFF, and welcome your Galaxy S20 to the Gorilla Family. Gorilla Cases LLC is based in Alliance, Ohio. Questions? Email info@gorillacasestore.com or call 978-797-0223.
Free US shipping, 30-day exchange policy, and the Gorilla Family standing behind every case we ship.
Image Alt Texts
- Best Galaxy S20 Ultra waterproof case 2026 from Gorilla Cases with clear back and IP68 seal
- Galaxy S20 Plus aluminum Gorilla case with kickstand in black
- Galaxy S20 waterproof case with crystal-clear back from Gorilla Cases
- Galaxy S20 Ultra Military Metal Case with screw-fixed aluminum frame
- Galaxy S20 Ultra, S20 Plus, and S20 size comparison with matched Gorilla Cases