10 Best galaxy s21 ultra cases of 2025

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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
- product dimensions:8.5 x 4.5 x 1.5 inches
- color:black
9.8

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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Analyzing top stores
Value for Money

2

OtterBox
OtterBox Galaxy S21 Ultra 5G (Only) - Defender Series Screenless Edition Case - Blue Suede Shoes - Holster Clip Included - Non-Retail Packaging
Main highlights

Multi-Layer Defense and Drop Protection
This case offers multi-layer defense and survives 4X drops.

Ideal for Outdoor and Rugged Use
Perfect for those needing robust protection in tough environments.

Customer Praise for Durability
Highly rated by users for its outstanding durability and protection.
Key specs
- compatible devices:Galaxy S21 Ultra 5G
- form factor:Basic Case
- additional features:slimmer design, screenless design with flawless touch response, holster with kickstand functionality
- product dimensions:7 x 4 x 2 inches
- color:Blue Suede Shoes
9.6

Exceptional

Our Rating
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
- product dimensions:N/A
- color:N/A
9.5

Excellent

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)
9.2

Excellent

Our Rating
5

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
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6

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
- product dimensions:0.04 x 0.04 x 0.04 inches
- color:Dark grey
8.8

Very Good

Our Rating

9.5
materials Quality

9.3
Durability

9.1
Comfort
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
8.7

Very Good

Our Rating
8

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

18% Off
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.
8.6

Very Good

Our Rating

9.9
Durability

9.7
lasts a long time

9.3
Comfort
9

Rayboen
Rayboen for Samsung Galaxy S21 Ultra Case, Translucent Frosted Skin Feel Anti-Scratch Hard PC Back Soft Silicone Edge, Slim Fit Shockproof Protective Phone Cover for Samsung S21 Ultra, Matte Purple
Main highlights

Translucent Design and Protection
The translucent matte back keeps the phone's logo visible and prevents scratches, ensuring a sleek and stylish look.

Ideal for Style and Safety
Perfect for those seeking a stylish, protective case that doesn't compromise on aesthetics or functionality.

Praised for Grip and Comfort
Customers love the skin-friendly texture and secure grip, minimizing accidental slips and enhancing user experience.
Key specs
- compatible devices:Samsung Galaxy S21 Ultra
- form factor:Basic Case
- additional features:Metallic Side Buttons
- product dimensions:6.65 x 3.15 x 0.55 inches
- color:Matte Purple
8.5

Good

Our Rating
10

M MAIKEZI

for Samsung Galaxy S21 Ultra Case with Camera Lens Cover HD Screen Protector,Military-Grade Drop Tested Magnetic Ring Holder Kickstand Protective Phone Case for Samsung Galaxy S21 Ultra 5G (Navy Blue)
8.4

Good

Our Rating

10 Best galaxy s21 ultra cases 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 Galaxy S21 Ultra 5G (Only) - Defender Series Screenless Edition Case - Blue Suede Shoes - Holster Clip Included - Non-Retail Packaging

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

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

6

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

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

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

9.9

9.7

9.3

9

Rayboen for Samsung Galaxy S21 Ultra Case, Translucent Frosted Skin Feel Anti-Scratch Hard PC Back Soft Silicone Edge, Slim Fit Shockproof Protective Phone Cover for Samsung S21 Ultra, Matte Purple

10

for Samsung Galaxy S21 Ultra Case with Camera Lens Cover HD Screen Protector,Military-Grade Drop Tested Magnetic Ring Holder Kickstand Protective Phone Case for Samsung Galaxy S21 Ultra 5G (Navy Blue)

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