10 Best Samsung Galaxy S21 Ultra 5g Waterproof Case Outlet of 2025

Tested and Reviewed: Top 10 Samsung Galaxy S21 Ultra 5g Waterproof Case Outlet deals with expert ratings from 8.1 to a perfect 10

April 2025 Edition

Editor's Choice

9.7

Oterkin

Oterkin for Samsung Galaxy S21 Ultra Case,S21 Ultra Waterproof Case with Built-in Screen Protector Dustproof Shockproof 360 Full Body Underwater Case for Samsung S21 Ultra 5G 6.8inch (2021) Black

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Editor's bottom line:

“This samsung galaxy s21 ultra 5g waterproof case outlet is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

IP68 Waterproof: Compatible with Samsung Galaxy S21 Ultra ONLY 6.8 inch 5G. Fully sealed body designed to be waterproof for underwater activities,can submerged underwater for 6.6ft/1 hour. Support taking photos and videos underwater, perfect for outdoor water sports and daily use.
360 Degree Protection: Oterkin S21 Ultra waterproof case equipped with four shock-absorption bumpers protect your new phone from drops and impacts. Full body design makes this case dustproof sandproof snowproof, protect your Samsung S21 Ultra in all weather conditions.
Support All Functions& High Clarity: Easy accessible buttons and precise cutouts for all ports of S21 Ultra 5G. Built-in screen protector remains high sensitivity and supports fingerprint unlock. Clear back supports wireless charging,you can charge phone without removing this S21 Ultra phone case.
Secure Hand Grip: Non slip groove redesigned sides for reinforced grip, sturdy lanyard makes S21 Ultra easy to carry and decrease falling times. Slim and light body does not add too much bulk,can be easily put into the pocket. Two covers snap on design makes it easy to take on and off.
What you can get : 2021 New released Oterkin Waterproof case for S21 Ultra 6.8 inch 5G, Professional Screen Cleaning Paper,Lanyard,12 months warranty and 24/7 service.

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Picked by 159 people today

9.5

LifeProof

LifeProof Next Series Case for Galaxy S21 Ultra 5G (Only) - Non-Retail Packaging - Napa (Clear/Grapeade)

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Main Highlights

Compatible with Galaxy S21 Ultra 5G (Only) (Not Compatible with Other Galaxy S21 Models)
Survives: drops from 2 meters
Formed: for a slim profile + direct touch (Screenless) with Antimicrobial treatment *helps protect the case exterior against many common bacteria. It does not protect you, the screen, or primarily-interior pieces.
Shields: ports, mic, and speakers
Proper installation of a LifeProof product is important to successful use so please review the installation video and check the user manual to ensure correct installation Includes LifeProof 1-year limited warranty (see website for details)

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9.5

DINGXIN

DINGXIN for Samsung Galaxy S21 Ultra 5G Case Waterproof IP68 Certified Dustproof Shockproof Snowproof Built-in Screen Protector for Galaxy S21 Ultra 6.8" Black

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Main Highlights

Compatible for Galaxy S21 Ultra 5G 6.8" , Easy to install and with all function as volume button, power, charging and so on, the weight is very light only 80g
Pass IP68 certified waterproof the case can protect your Galaxy under water less than 6.6ft for 30 minutes, Take the Waterproof case for Galaxy swimming, surfing and washing, Also can take picture in the sea or just chat relax in bath crock!
Shock proof design never worry you or baby throw cracked our phone screen less than 6ft /2m with test; Dirty proof avoid sand or mud dirty and broken our phone when we play in beach or garden
The Clear design ensures HD clarity reveal the true color and beauty of your device. Front cover with built in screen protector of crystal clarity can also prevent scratches, without sacrifice the sensitivity. And the clear back cover will not block wireless charging signal make it support wireless charging with case on.
Lifetime quality warranty and refund no reason, your satisfaction is very important to us! Kindly notice install the case correct as instruction, especially close the charging and earphone cover when you take Galaxy swimming or surfing

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9.2

Dexnor

Dexnor for Samsung Galaxy S21 Ultra Case, [Built in Screen Protector and Kickstand] Heavy Duty Military Grade Protection Shockproof Protective Cover for Samsung Galaxy S21 Ultra 5G, 6.8 inch Purple

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Main Highlights

Compatibility This light but tough rugged case ONLY fits your Galaxy S21 Ultra6.8 inches perfectly without any bulky feeling.Notes: Not fit Galaxy S21 6.2 inchesand Galaxy S21 Plus6.7 inchesPlease check the phone model carefully before purchase)
360°Heavy Duty Protection Besides full-body coverage of front & back cases, the reinforced corners and raised edges around the camera and screen will offer your Galaxy S21 Ultra6.8 inches further protection against drops, cracks and scratches.
Multifunctional Back KickstandThe retractable kickstand is very stable to use, allowing you to enjoy hands-free viewing in portrait or landscape mode. You can also thread your finger through it to manipulate the phone with one hand.
Wireless Charging CompatibleOur bumper cover won't interfere with wireless charging. You can feel free to charge your cell phone wirelessly with this case on.
Touch-sensitive Screen ProtectorThe built-in screen protector of our protective phone case is not only resistant to scratch and smudge, it's also responsive to your touch, allowing smooth typing and gaming without any lag.

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9.0

Ezanmull

for Samsung Galaxy S21 Ultra Phone Case Waterproof with Screen Protector, Full Body Protection Heavy Duty Shockproof Drop Proof Anti-Scratched Rugged Cases Cover for Galaxy S21 Ultra 6.8" （All Teal）

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Main Highlights

Fit Perfectly: Compatible with Samsung Galaxy S21 Ultra, 6.8" 2021 Released, clear back design. Completely fit in Samsung Galaxy S21 Ultras speaker, buttons, sensors, cameras.
Full Protection: Built-in screen protector&scratch resistant back panel, shock absorb, anti-scratch protections. Fingerprint unlock function can work after attached the fingerprint film.
Waterproof: IP68 Certified Waterproof case, protect your phone from water. Waterproof up to 6.6ft/2m underwater for one hour. Perfect for any underwater activities, outdoor sports and daily use.
Durable: Shockproof exceed Military Standard 810G-516, withstands drops from 6.6'/2 m. Two covers snap on design makes it fast and easy to install.
Installation Guidance: Proper installation is important to successful use. Please feel free to contact us first if theres any question.

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8.8

ANTSHARE

ANTSHARE for Samsung Galaxy S21 Ultra Case Waterproof,Galaxy S21 Ultra Case with Screen Protector,360 Full Body Heavy Shockproof Rugged Samsung S21 Ultra Phone Case for Women Men Black/Clear

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Main Highlights

[Fit Perfectly] ANTSHARE clear Samsung Galaxy S21 Ultra case. Waterproof, shockproof, dustproof. Wireless charging compatible.
[Water Resistance] IP68 Certified Samsung Galaxy S21 Ultra waterproof case, can be submerged up to 6.6ft/2m underwater for 30 minutes, taking photos/videos underwater. Washable, perfect for any sports and daily use.
[360 Full Protection] Professional shockproof materials, 8 shock absorbing bumpers, twofold shockproof design, maximum protection for your phone.
[Screen & camera Protection] Built-in HD Glass screen & camera protector against scratches, scuffs. Ideal for people with children, pets, or people who tend to drop their phones.
[Lifetime Warranty] ANTSHARE phone case Samsung S21 Ultra comes with a lifetime warranty. Any questions, please feel free to contact us. We will solve for you within 12 hours.

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8.6

Lanhiem

Lanhiem for Samsung Galaxy S21 Ultra Case, IP68 Waterproof Dustproof, Built-in Screen Protector, Rugged Full Body Shockproof Protective Phone Cover for Galaxy S21 Ultra 5G 6.8 Inch, Black

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Main Highlights

IP68 Certified Waterproof : Perfect waterproof case compatible with Galaxy S21 Ultra 5G (6.8 inch), extreme safe even after 1000 times test of using underwater 6.6ft for 1 hour. Not for Galaxy S21 / S21+ Plus / Note 20 Ultra
Full Body Protection : Waterproof, Shockproof, Dustproof, full sealed design exceeds military standard to adapt any outdoor activities; Supports Wireless Charging, S Pen and Fingerprint Unlock (Please paste the fingerprints pad in the fingerprint reader position then perform fingerprint recognition again)
High Touch Responsive : Built-in HD plastic screen protector prevents scratches, damage and dirt, also won't affect the touch sensitivity or clarity; Clear back cover will show off the beauty of your Galaxy S21 Ultra
Compact and Lightweight : TPU material with hard plastic frame, makes your phone lightweight and tough; Slim body (17.76 *8.69 *1.35 cm) doesn't add much to the size of your S21 Ultra; With a phone strap for convenient carrying
Easy Installation : Two covers (front/back) snap on design makes it fast and easy to install or take off in seconds, suitable for daily use

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8.3

SPIDERCASE

SPIDERCASE for Samsung Galaxy S21 Ultra Waterproof Case,IP68 Waterproof and Built-in Screen Protector 360 Full Body Underwater Case Shock-Proof and dust-Proof Galaxy S21 Ultra Case 6.8-inch,Purple

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Main Highlights

[IP68 Waterproof]The Samsung galaxy s21 ultra phone case IP68 waterproof technology to effectively protect your phone from water, rain and moisture. Precision design and high-quality materials ensure that the phone case wraps tightly and provides full waterproof protection, so you don't have to worry about damaging your phone through accidental splashing during outdoor activities or daily use.
12FT Military Shockproof This S21 Ultra phone case has passed military drop resistance testing and has undergone over 6000 drop tests, reaching a height of 12 feet. This phone case features a unique design of four crash angles, which disperses most of the impact force and protects your phone from harm.
360 Full Body ProtectionThe Samsung galaxy s21 ultra case Certified MIL-STD 12 ft drop test and full body protection prevents your device from damage of accidental drops and shocks.which makes it more sensitive and convenient to use, and can also prevent
Clearer Sound Quality & Wireless ChargingThis Samsung galaxy S2Ultra Case uses a special upgrade material that is precisely measured, perfect match with 12 speakers, buttons and sockets to maintain clear sound quality. You can also open the charging port cover for better calls without worrying about the volume. Enjoy uninterrupted music and call quality. The Samsung Galaxy S21 Ultra Case is compatible with all wireless chargers and can be easily charged.
Installation GuidanceRe-set your fingerprints AFTER you put the case on. Read the instructions carefully and remove the protective film that's covering the fingerprint recognition area before you do anything! Opening the charging port will made you hear and heard more clearly.

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8.1

Temdan

Temdan Designed for Samsung Galaxy S21 Ultra Case,Waterproof Samsung S21 Ultra Case with Built-in Screen Protector Shockproof Dustproof Heavy Duty Full Body Protective Case for Samsung Galaxy S21 5G

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Main Highlights

Fit PerfectlyPrecise designed for Samsung Galaxy S21 Ultra 5G only.Completely fit in with Samsung Galaxy S21 Ultra face id function, speaker, buttons, sensors and cameras.It is recommended to use the original Type-C charge cable.Supports wireless charging.
IP68 WaterproofTemdan Samsung Galaxy S21 Ultra Case is IP68 Waterproof Certified, submerged to 6.6'/1.5 m for 20 minuites. And the Galaxy S21 Ultra waterproof case is perfect for outdoor activities like swimming, snorkeling, surfing and more. We suggest doing waterproof test to the case, before taking it into water with a phone in it.
Full Body ProtectionTemdan Samsung S21 Ultra case is made of shock-absorbing TPU and PC, with four shock-absorbing corners, it can withstand shocks and drops from 6.6 feet, and protect your new phone from drops and impacts. The full body design makes this case dust and snow resistant, protecting your Galaxy S21 Ultra in all weather conditions.
High Clarity & Support Fingerprint Reader Special built-in screen protector remains high sensitivity and supports fingerprint unlock.Please check carefully of the instructions inside the packing of how to success use of the fingerprint reader.
Easy to InstallProper installation is important for successful use. The snap-on design of the two covers (front and back) makes installation quick and easy. Please remove all other screen protectors before installation. If you have any questions, please contact us first.

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8.1

Temdan

Temdan for Samsung Galaxy S21 Ultra Case Waterproof with Built-in Screen Protector 360 Full Body Underwater Case Shockproof Dustproof for Galaxy S21 Ultra Phone Case 5G 6.8 Inch Black

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Main Highlights

IP68 WaterproofCompatible with Samsung Galaxy S21 Ultra ONLY (6.8inch) 5G. The fully sealed design supports a variety of underwater entertainment, suitable for underwater photography, surfing, fishing, swimming, diving and more.Samsung S21 Ultra waterproof Case.
Full body ProtectionThe Galaxy S21 Ultra shockproof case has four shock-absorbing angles to protect your new phone from drops and collisions, as well as a built-in screen protector and lens film to prevent scratches. The full body design protects your Samsung S21 Ultra from dust, sand and snow in all weather conditions. Suitable for construction site, field, factory, mountain and other harsh environment.
Supports all functions and high definitionEasy access to buttons and precise cutting of all ports. A special built-in screen saver maintains high sensitivity, makes it easy to operate the phone's screen, and supports fingerprint unlocking. HD lens film, restore the clarity of the photo, clear back support wireless charging, more can show the original appearance of S21 Ultra 5G phone.
Light and thin, Anti-slipSide redesign anti-slip, strengthen the holding force, the S21 Ultra case itself is light and thin, will not increase the burden, with Lanyard makes the phone easy to carry, reduce the number of drops.
NotePlease remove the toughened film of your mobile phone before installation, and test the waterproof function before launching. Please confirm the phone model before purchase to avoid buying the wrong product. We will ensure that you have a good shopping experience.

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Our Best Overall Choice

Best Choice

9.7

Oterkin

Oterkin for Samsung Galaxy S21 Ultra Case,S21 Ultra Waterproof Case with Built-in Screen Protector Dustproof Shockproof 360 Full Body Underwater Case for Samsung S21 Ultra 5G 6.8inch (2021) Black

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Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

IP68 Waterproof: Compatible with Samsung Galaxy S21 Ultra ONLY 6.8 inch 5G. Fully sealed body designed to be waterproof for underwater activities,can submerged underwater for 6.6ft/1 hour. Support taking photos and videos underwater, perfect for outdoor water sports and daily use.
360 Degree Protection: Oterkin S21 Ultra waterproof case equipped with four shock-absorption bumpers protect your new phone from drops and impacts. Full body design makes this case dustproof sandproof snowproof, protect your Samsung S21 Ultra in all weather conditions.
Support All Functions& High Clarity: Easy accessible buttons and precise cutouts for all ports of S21 Ultra 5G. Built-in screen protector remains high sensitivity and supports fingerprint unlock. Clear back supports wireless charging,you can charge phone without removing this S21 Ultra phone case.
Secure Hand Grip: Non slip groove redesigned sides for reinforced grip, sturdy lanyard makes S21 Ultra easy to carry and decrease falling times. Slim and light body does not add too much bulk,can be easily put into the pocket. Two covers snap on design makes it easy to take on and off.
What you can get : 2021 New released Oterkin Waterproof case for S21 Ultra 6.8 inch 5G, Professional Screen Cleaning Paper,Lanyard,12 months warranty and 24/7 service.

Show Price

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