10 Best case for s21 ultras of 2025

Explore top picks

Best Choice

1

OtterBox
OtterBox for Samsung Galaxy S21 Ultra 5G, Superior Rugged Protective Case, Defender Series, Black
Main highlights

Key Features
Rugged design, OtterArmor Microbial Defense, hands-free viewing with belt clip/kickstand. Includes OtterBox limited lifetime warranty.

Ideal Use Cases
Best for Samsung Galaxy S21 Ultra 5G owners needing robust protection against drops, dust, and germs in any environment.

Customer Praise
Most reviews highlight the case`s exceptional durability and protection, appreciating the secure fit and peace of mind it offers.
Key specs
- compatible devices:Samsung Galaxy S21 ULTRA 5G
- form factor:Basic Case
- additional features:Belt Clip
- special features:Shock-Absorbent
- product dimensions:8.5 x 4.5 x 1.5 inches
9.9

Exceptional

Our Rating

9.9
Durability

9.9
lasts a long time

9.7
worth the money
How do we rank?

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Careful review Our team ensures quality, value, and fit based on real user feedback

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Based on millions of stores and reviews

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Value for Money

2

OtterBox
OtterBox for Samsung Galaxy S21 Ultra 5G, Superior Rugged Protective Case, Defender Series, Black
Main highlights

Rugged Drop Protection
OtterBox Defender Series Samsung Galaxy S21 Ultra 5G case offers rugged drop protection with multi-layer construction and raised edges for camera and screen safety.

Ideal for Construction Workers
Perfect for environments with frequent drops and rough handling, such as construction sites. Includes port covers to block dirt and a belt clip for convenience.

Highly Durable and Protective
Customers frequently praise the case's durability and ability to protect phones from significant drops, with many noting it prevents damage even after severe impacts.
9.8

Exceptional

Our Rating

9.9
Durability

9.7
lasts a long time

9.3
Comfort
3

OtterBox
OtterBox Commuter Series Case for Galaxy S21 Ultra 5G (ONLY - Does NOT FIT Non-Plus or Plus Sizes) - Black
Main highlights

Compatibility with Galaxy S21 Ultra 5G
Compatible with Galaxy S21 Ultra 5G ONLY - DOES NOT FIT non-Plus or Plus sizes.

Ideal for Daily Users with Frequent Drops
Perfect for daily users who hold their phone frequently and may have a history of phone drops. Offers robust protection without excessive bulk.

Praised for Robust Protection
Most reviews highlight the case's ability to protect the phone even after severe drops, with many users noting their phones remained undamaged.
Key specs
- compatible devices:Galaxy S21 Ultra 5G
- form factor:Thin profile
- additional features:Limited lifetime warranty
- special features:Microbial growth blocker
- product dimensions:N/A
9.7

Exceptional

Our Rating

9.9
Durability

9.3
Easy installation

8.7
lasts a long time
4

Teayoha

Teayoha for Samsung Galaxy S21 Ultra Case,[Compatible with Magsafe] [Military Grade Drop Tested] Shockproof Magnetic Tough Rugged Protective Phone Case -6.8 inch (Black)
9.4

Excellent

Our Rating
5

TORRAS
TORRAS Shockproof Compatible for Samsung Galaxy S21 Ultra Case, [Military Grade Drop Tested] S21 Ultra Case, Translucent Matte Hard Back with Soft Edge Slim Thin Galaxy S21 Ultra Case, Matte Black
Main highlights

Silky Touch and Comfortable Grip
The Matte Nano Oleophobic Coating of the thin Galaxy S21 Ultra case makes holding your S21 Ultra a pleasure, preventing annoying fingerprints over the back.

Ideal for Minimal Bulk
Perfect for those who prefer thinner cases on large phones to minimize added bulk while carrying it in a pocket.

Highly Praised for Protection
Commonly praised for its balance of style and functionality, with raised edges for screen and camera protection.
Key specs
- compatible devices:Galaxy S21 Ultra 5G
- form factor:Thin case
- additional features:Responsive buttons
- special features:Shockproof, wireless charging
- product dimensions:0.04 x 0.04 x 0.04 inches
9.2

Excellent

Our Rating

9.5
materials Quality

9.3
Durability

9.1
Comfort
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6

MXX
MXX Case Compatible with Galaxy S21 Ultra Case, 3-Layer Super Full Heavy Duty Body Bumper Cover/Shock Protection/Dust Proof, Designed for Samsung Galaxy S21 Ultra 5G 6.8 Inch 2021 (Black)
Main highlights

Durable Protection and Compatibility
Triple-layer defense with shockproof, dust, scratch, and drop protection. Compatible with Galaxy S21 Ultra 5G 2021 across all carriers.

Ideal for Active Users
Perfect for users needing robust protection against drops, scratches, and shocks. Great for families with kids or individuals frequently on the move.

Praised for Durability and Fit
Customers love the durability and precise fit, comparing it favorably to Otterbox. Common praise for its strong protection and excellent value.
9.0

Excellent

Our Rating

9.9
Durability

9.7
lasts a long time

9.1
Easy installation
7

Cum2giff

Cum2giff Magnetic for Samsung Galaxy S21 Ultra Case, Compatible with Magsafe, Shockproof Military Grade Drop Protection, Translucent Matte Slim Rugged Cover Shockproof Case for S21 Ultra 6.8", Black
8.9

Very Good

Our Rating
8

Crave

Crave Dual Guard for Galaxy S21 Ultra Case, Shockproof Protection Dual Layer Case for Samsung Galaxy S21 Ultra, S21 Ultra 5G (6.8 inch) - Forest Green
8.8

Very Good

Our Rating
9

FNTCASE

FNTCASE for Samsung Galaxy S21-Ultra Case: Military Grade Rugged Cell Phone Cover with Kickstand | Shockproof TPU Protection Bumper Matte Textured Design for Samsung S21 Ultra Cases 6.8 inches (Black)
8.7

Very Good

Our Rating
10

IXJYLCPC

IXJYLCPC for Galaxy S21 Ultra Case with Screen Protection: Heavy Duty Protective Shockproof and Scratch Proof Cell Phone case for Samsung Galaxy S21 Ultra-Black
8.5

Good

Our Rating

10 Best case for s21 ultras of 2025

1

OtterBox for Samsung Galaxy S21 Ultra 5G, Superior Rugged Protective Case, Defender Series, Black

9.9

9.9

9.7

How do we rank?

How do we rank?

Analyzing top stores

2

OtterBox for Samsung Galaxy S21 Ultra 5G, Superior Rugged Protective Case, Defender Series, Black

9.9

9.7

9.3

3

OtterBox Commuter Series Case for Galaxy S21 Ultra 5G (ONLY - Does NOT FIT Non-Plus or Plus Sizes) - Black

9.9

9.3

8.7

4

Teayoha for Samsung Galaxy S21 Ultra Case,[Compatible with Magsafe] [Military Grade Drop Tested] Shockproof Magnetic Tough Rugged Protective Phone Case -6.8 inch (Black)

5

TORRAS Shockproof Compatible for Samsung Galaxy S21 Ultra Case, [Military Grade Drop Tested] S21 Ultra Case, Translucent Matte Hard Back with Soft Edge Slim Thin Galaxy S21 Ultra Case, Matte Black

9.5

9.3

9.1

6

MXX Case Compatible with Galaxy S21 Ultra Case, 3-Layer Super Full Heavy Duty Body Bumper Cover/Shock Protection/Dust Proof, Designed for Samsung Galaxy S21 Ultra 5G 6.8 Inch 2021 (Black)

9.9

9.7

9.1

7

Cum2giff Magnetic for Samsung Galaxy S21 Ultra Case, Compatible with Magsafe, Shockproof Military Grade Drop Protection, Translucent Matte Slim Rugged Cover Shockproof Case for S21 Ultra 6.8", Black

8

Crave Dual Guard for Galaxy S21 Ultra Case, Shockproof Protection Dual Layer Case for Samsung Galaxy S21 Ultra, S21 Ultra 5G (6.8 inch) - Forest Green

9

FNTCASE for Samsung Galaxy S21-Ultra Case: Military Grade Rugged Cell Phone Cover with Kickstand | Shockproof TPU Protection Bumper Matte Textured Design for Samsung S21 Ultra Cases 6.8 inches (Black)

10

IXJYLCPC for Galaxy S21 Ultra Case with Screen Protection: Heavy Duty Protective Shockproof and Scratch Proof Cell Phone case for Samsung Galaxy S21 Ultra-Black

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