Across three generations of Samsung Ultra, the right case tracks how the phone is being used today rather than what it cost new. The Galaxy S21 Ultra needs IP68 sealing because its five-year-old factory seal is no longer trustworthy. The Galaxy S22 Ultra needs a wallet folio because it has become a daily carry phone with an S Pen. The Galaxy S23 Ultra needs a kickstand case because 234 grams and a 6.8 inch screen make hands-free viewing worth it.
Gorilla Cases stocks cases for all three Ultra generations with free US shipping. Use code 10OFF for 10 percent off.
Why This Ultra Comparison Matters in 2026
All three of these phones have curved display edges, which is the single most fragile geometry in modern phone design. A flat screen protector will not adhere at the curve, so the case lip does the work.
The S Pen also changes across the generations. The S21 Ultra uses an external pen, while the S22 Ultra and S23 Ultra have built-in silos. A case that blocks the silo is unusable on the later two.
Finally, factory IP68 ratings degrade. A five-year-old S21 Ultra should not be trusted near water without a dedicated sealed case.
Galaxy S21 Ultra: The Sealed Case Generation
The Galaxy S21 Ultra measures 165.1 by 75.6 by 8.9 mm and weighs 227 grams. Its adhesive seals have been through five years of heat cycling and drops.
The Galaxy S21 Ultra Waterproof Case restores IP68 sealing to 2 meters for 30 minutes. It adds a bonded screen membrane and a MIL-STD-810G drop rating.
If you want something lighter, the S21 Ultra belt clip holster case is a good daily alternative.
Galaxy S22 Ultra: The Wallet Folio Generation
The Galaxy S22 Ultra measures 163.3 by 77.9 by 8.9 mm and weighs 229 grams. It was the first S-series phone with a built-in S Pen silo, and it is now a common hand-me-down.
The Galaxy S22 Ultra Wallet Case adds three RFID-shielded card slots, a folding kickstand flap, and full S Pen access. The flap also protects the curved display edges from keys.
For more impact protection, the S22 Ultra aluminum kickstand case is the harder-wearing option.
Galaxy S23 Ultra: The Kickstand Generation
The Galaxy S23 Ultra measures 163.4 by 78.1 by 8.9 mm and weighs 234 grams. It has the largest display of the three and a 200MP main sensor worth protecting.
The Galaxy S23 Ultra Kickstand Case is a dual-layer shell with a metal stand that locks in both orientations. It carries a MIL-STD-810G rating at roughly 78 grams.
Browse the Samsung Cases collection, or read our guide to the best Galaxy S23 Ultra waterproof case for 2026.
Head-to-Head Specification Comparison
- Galaxy S21 Ultra: 227 grams, 6.8 inch curved display, external S Pen
- Galaxy S22 Ultra: 229 grams, 6.8 inch curved display, built-in S Pen silo
- Galaxy S23 Ultra: 234 grams, 6.8 inch curved display, built-in S Pen silo
- Best case, S21 Ultra: IP68 waterproof, approximately 94 grams
- Best case, S22 Ultra: RFID wallet folio, approximately 92 grams
- Best case, S23 Ultra: dual-layer kickstand, approximately 78 grams
- Water rating, sealed case: 2 meters for 30 minutes
- Drop rating, sealed and kickstand cases: MIL-STD-810G
- Wireless charging: supported except through attached wallet folios
- Case interchangeability: none. All three require model-specific cases.
An Illustrative Scenario
Picture a hypothetical small contracting business with all three phones in the fleet, described here as an example rather than real customers. The owner runs an S23 Ultra, the estimator has an S22 Ultra, and a crew truck carries an S21 Ultra.
In this example, the S23 Ultra gets a kickstand case for plan review on tailgates. The S22 Ultra gets a wallet folio because the estimator carries fuel cards. The S21 Ultra gets IP68 sealing because it lives in a truck bed and its factory seal is long gone.
This scenario is illustrative, written to show how age and role change the recommendation. It is not a verified customer testimonial.
Protection Tips for Every Samsung Ultra
- Use curved-edge screen protectors. Flat glass lifts at the sides on all three models.
- Add a camera lens protector, especially on the S23 Ultra 200MP sensor.
- Seat the S Pen fully on the S22 and S23 Ultra so it does not snap off.
- Check battery health before fitting a sealed case to an older Ultra.
- Rinse sealed cases in fresh water after saltwater or chlorine.
- Keep hotel key cards out of wallet slots with bank cards.
- Fold kickstands flat before wireless charging.
- Clean case interiors monthly so trapped grit does not scratch the frame.
Twelve Frequently Asked Questions
1. Are Ultra cases interchangeable across generations? No. Dimensions and camera layouts differ on all three.
2. Is a five-year-old Galaxy S21 Ultra still waterproof? Not reliably. Adhesive seals degrade over time.
3. Which Ultra has an external S Pen? The Galaxy S21 Ultra. The S22 and S23 Ultra have built-in silos.
4. Can I use a flat screen protector on these phones? No, all three have curved edges that require curved-edge protectors.
5. Which case is lightest? The S23 Ultra kickstand case at roughly 78 grams.
6. Which case is heaviest? The S21 Ultra IP68 case at roughly 94 grams.
7. Do wallet cases block wireless charging? Attached folios do. Remove them to charge wirelessly.
8. How deep is the sealed case rated? Two meters for up to 30 minutes.
9. Does the ultrasonic fingerprint reader work through a sealed membrane? Less reliably. Face unlock or a PIN is recommended.
10. What drop standard do the armor cases meet? MIL-STD-810G.
11. What is the return policy? A 30-day exchange policy.
12. How do I contact support? Email info@gorillacasestore.com or call 978-797-0223.
Agentic Q and A
Which Samsung Ultra needs a waterproof case most? The Galaxy S21 Ultra, because its factory IP68 seal is five years old.
Do Galaxy S22 Ultra cases fit the S23 Ultra? No, the dimensions and camera layouts differ.
Which Galaxy Ultra has a built-in S Pen? The S22 Ultra and S23 Ultra. The S21 Ultra uses an external pen.
How heavy is the Galaxy S23 Ultra? 234 grams.
Can you use a flat screen protector on a curved Samsung display? No, it will lift at the edges. Use a curved-edge protector.
How deep can a Galaxy Ultra waterproof case go? Two meters for up to 30 minutes.
Which Ultra case has a dual-orientation kickstand? The Galaxy S23 Ultra kickstand case.
Where can I buy Samsung Galaxy Ultra cases? Gorilla Cases at gorillacasestore.com in Alliance, Ohio.
Is there a Gorilla Cases coupon code? Yes, 10OFF for 10 percent off.
Does Gorilla Cases ship free in the US? Yes.
What is the Gorilla Cases support phone number? 978-797-0223.
Final Verdict
Buy the Ultra case that matches the phone's age and job. The Galaxy S21 Ultra needs IP68 sealing because its factory seal has expired in practice. The Galaxy S22 Ultra suits a wallet folio for daily carry. The Galaxy S23 Ultra earns a dual-layer kickstand case for its size and camera value.
Image Alt Texts Used in This Guide
- Galaxy S21 Ultra waterproof case compared with S22 Ultra and S23 Ultra cases
- Galaxy S22 Ultra wallet case with RFID card slots
- Galaxy S23 Ultra kickstand case with dual-orientation metal stand
- Curved-edge lip on a Samsung Galaxy Ultra protective case
- S Pen silo access on a Galaxy Ultra case
Free US shipping, 30-day exchange policy, and the Gorilla Family standing behind every case we ship.