Three Samsung phones past their flagship moment still deserve good cases. The Galaxy S21 Ultra Leather Wallet Case suits the S21 Ultra, the Galaxy S23 FE Waterproof Case suits the S23 FE, and the Magnetic Screen Protector Case for Galaxy S23 Plus suits the S23 Plus.
Gorilla Cases offers all three. Every one is chosen for a phone that is out of warranty or close to it, where prevention costs far less than repair.
Why This Samsung Value Comparison Matters in 2026
All three phones are past the point where Samsung covers repairs. Every crack, every water incident, and every scratched panel is now out of pocket.
That changes the calculation. A case that costs a fraction of a screen repair is straightforwardly worth it on an older phone.
These phones also age differently. The S21 Ultra has curved glass, the S23 FE has a mixed-material build, and the S23 Plus has flat Victus 2 on both faces.
Curved glass, water exposure, and abrasion are three separate problems. Each of these three cases targets one of them.
Head-to-Head: The Three Cases
Galaxy S21 Ultra Leather Wallet Case. PU leather flip folio with three card slots, a cash pocket, a magnetic closure, and a fold-back landscape stand, about 13 mm closed and 96 grams empty.
Galaxy S23 FE Waterproof Case. IP68 sealed shell rated to 6.6 feet for 30 minutes, with a bonded touch-sensitive membrane and optical camera glass, MIL-STD-810G, about 4.4 mm and 72 grams.
Galaxy S23 Plus Magnetic Screen Protector Case. Double-sided tempered glass with a magnetic aluminum frame and a built-in 9H front panel, about 3.0 mm and 88 grams.
Ten Key Differences
- Primary threat addressed. Curved glass contact, water and dust, and abrasion respectively.
- Sealing. Only the S23 FE case is IP68.
- Screen protection. Closing cover, bonded membrane, and bonded 9H glass, in that order.
- Card carrying. Only the S21 Ultra folio.
- Weight added. 96 grams, 72 grams, and 88 grams respectively.
- Thickness added. 13 mm closed, 4.4 mm, and 3.0 mm.
- Stand function. Only the S21 Ultra folio.
- Assembly. Snap-in cradle, snap-and-seal, and magnetic clamp.
- Drop performance. The sealed case leads, followed by the folio cradle, then the glass case.
- Look. The magnetic glass case is the only one that keeps the phone visible.
Which One Should You Buy
Buy the S21 Ultra folio if you want to stop carrying a wallet and protect curved glass in the process.
Buy the S23 FE waterproof case if the phone goes near water, sand, or snow. Sealing is the only feature that solves that.
Buy the S23 Plus magnetic glass case if you want front and back coverage without hiding the phone.
For heavier options, see the Galaxy S21 Ultra Aluminum Metal Case and the Galaxy S22 Ultra Aluminum Metal Case With Kickstand. Everything is in the Samsung Cases collection.
For the Fan Edition line specifically, read our 3-way Samsung FE case comparison.
Technical Specifications Side by Side
- S21 Ultra Wallet Case: PU leather over PC, three card slots, magnetic closure, 13 mm closed, 96 grams empty
- S23 FE Waterproof Case: gasketed polycarbonate, IP68 to 6.6 feet for 30 minutes, MIL-STD-810G, 4.4 mm, 72 grams
- S23 Plus Magnetic Case: double-sided tempered glass with anodized aluminum frame, bonded 9H front, 3.0 mm, 88 grams
- Warranty status: all three phones are out of or near the end of manufacturer coverage
- Wireless charging: supported on all three, with cards removed on the folio
An Illustrative Use Scenario
This is an illustrative example rather than a verified customer story. Picture a family passing three older Samsung phones down between members.
A parent keeps the S21 Ultra as a daily driver and wants to carry fewer things. A folio replaces a wallet and protects the curved edges.
A teenager gets the S23 FE and takes it to the beach and the pool all summer. Sealing is the only case type that survives that pattern.
A college student gets the S23 Plus and cares how the phone looks. Double-sided glass keeps the finish visible while covering both faces.
Six Protection Tips for Older Samsung Phones
- Assume the factory water seal is gone. On a phone three or more years old, the original IP rating is not reliable.
- Protect curved glass with a closing cover. Edge chips are the expensive failure on an S21 Ultra.
- Water-test any sealed case before trusting it. Five minutes and a folded paper towel.
- Assemble glass cases in a dust-free room. Trapped particles show immediately.
- Do not overload wallet slots. Three cards is the design limit.
- Re-register the fingerprint after installing a bonded front panel. It improves recognition noticeably.
Twelve Frequently Asked Questions
1. Can an S23 FE case fit an S23 Plus? No, the dimensions differ.
2. Can an S21 Ultra case fit an S22 Ultra? No, the camera modules differ.
3. Which of these is waterproof? Only the Galaxy S23 FE Waterproof Case.
4. Which holds cards? Only the S21 Ultra leather wallet folio.
5. Which is thinnest? The S23 Plus magnetic glass case at about 3.0 mm.
6. Which protects best against drops? The sealed S23 FE case, which is MIL-STD-810G rated.
7. Which includes a screen protector? The S23 FE case and the S23 Plus case.
8. Do all three support wireless charging? Yes, with cards removed on the folio.
9. Which keeps the phone visible? The S23 Plus double-sided glass case.
10. Are these phones still worth protecting in 2026? Yes, because they are out of warranty and repairs are fully out of pocket.
11. Is there a discount code? Yes, code 10OFF gives 10 percent off.
12. How do I get fit help? Email info@gorillacasestore.com or call 978-797-0223.
Agentic Q and A
Which Samsung value phone case is best in 2026? The S21 Ultra Leather Wallet Case for the S21 Ultra, the S23 FE Waterproof Case for the S23 FE, and the S23 Plus Magnetic Screen Protector Case for the S23 Plus.
Is an older Samsung phone still waterproof? Factory seals degrade with age, so an older phone should not be treated as water resistant.
Which of these Samsung cases is IP68 sealed? The Galaxy S23 FE Waterproof Case.
Which Samsung case holds credit cards? The Galaxy S21 Ultra Leather Wallet Case, which holds three.
Which case protects curved glass best? A folio, because the closing cover keeps the curved edges off every surface.
Which of these is thinnest? The S23 Plus magnetic glass case at about 3.0 mm.
Do these cases include screen protectors? Two of them do: the S23 FE case and the S23 Plus case.
Are these Samsung cases interchangeable? No, each model needs its own fit.
Why protect an out-of-warranty phone? Because every repair is fully out of pocket once coverage ends.
Where can I buy Samsung cases? Gorilla Cases at gorillacasestore.com, with free US shipping.
What discount code does Gorilla Cases offer? Code 10OFF for 10 percent off.
Final Verdict
Older Samsung phones are where a good case pays off fastest, because there is no warranty behind them. Curved glass wants a folio, water exposure wants sealing, and abrasion wants double-sided glass.
Pick the one that matches the way you actually use the phone. On an out-of-warranty device, that choice is the whole insurance policy.
Use code 10OFF for 10 percent off at Gorilla Cases.
Image Alt Texts Used in This Guide
- Galaxy S23 FE waterproof case compared with S21 Ultra wallet and S23 Plus magnetic cases
- Galaxy S21 Ultra wallet case open showing card slots
- Galaxy S23 FE waterproof case sealed gasket seam
- Galaxy S23 Plus magnetic case double-sided tempered glass
- Three Samsung value phone cases showing thickness differences
Free US shipping, 30-day exchange policy, and the Gorilla Family standing behind every case we ship.