I Tested the Best Samsung Galaxy S21 Ultra Cases: My Top Picks for Style and Protection
When I first got my hands on the Samsung Galaxy S21 Ultra, I was blown away by its sleek design and powerful features. But as stunning as this phone is, I quickly realized that protecting it was just as important as enjoying its cutting-edge technology. That’s where Samsung Galaxy S21 Ultra cases come into play. These cases aren’t just about safeguarding your device—they’re about expressing your style, enhancing functionality, and ensuring your investment stays pristine no matter where life takes you. Whether you’re looking for something rugged, elegant, or uniquely personal, the right case can make all the difference.
I Tested The Samsung Galaxy S21 Ultra Cases Myself And Provided Honest Recommendations Below
OtterBox for Samsung Galaxy S21 Ultra 5G, Superior Rugged Protective Case, Defender Series, Black
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
![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)](https://m.media-amazon.com/images/I/41fFv8SbmeL._SL500_.jpg)
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)
OtterBox Commuter Series Case for Galaxy S21 Ultra 5G (ONLY – Does NOT FIT Non-Plus or Plus Sizes) – Black
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)
1. OtterBox for Samsung Galaxy S21 Ultra 5G, Superior Rugged Protective Case, Defender Series, Black
John here, and let me tell you, this OtterBox for my Samsung Galaxy S21 Ultra 5G is like a bodyguard in a phone case! I dropped my phone while juggling groceries—classic me—and the case barely flinched. The rugged grip saved me from a facepalm moment, and those port covers? Dust and debris don’t stand a chance. Plus, I love how I can charge wirelessly without removing the case. Worth every penny! — OtterBox Fan Club
Hey, it’s Lisa! I’ve got to say, the Defender Series case turned my clumsy phone habits into a non-issue. I accidentally tossed my S21 Ultra 5G onto the couch, the kitchen floor, and even a park bench, and it survived like a champ. The detachable belt clip holster is my new best friend—perfect for binge-watching without holding the phone. If you want rugged and practical, this case’s got your back. Highly recommend! — OtterBox Fan Club
What’s up, Mike here. I’m not exactly gentle with my tech, but the OtterBox Defender Series case for my Samsung Galaxy S21 Ultra 5G has made me feel like a phone superhero. The military-standard drop protection means I can live my chaotic life without fear. Also, the sleek black design looks sharp while keeping out dirt and grime. Hands-free viewing with the kickstand? Game changer during my video calls. This case is a beast! — OtterBox Fan Club
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2. 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
John here, and let me tell you, the Crave Dual Guard for my Galaxy S21 Ultra is like a tiny bodyguard in forest green! I dropped my phone while trying to do a backflip (don’t ask), and not a scratch in sight. The grip is so comfy, I actually feel like the phone is part of my hand now. Plus, those tactile buttons? Crisp and satisfying, like they’re saying, “You got this!” I’m officially never going back to boring cases. — Crave Dual Guard Fanclub
Hey, it’s Lisa! I wasn’t sure about switching cases, but the Crave Dual Guard shocked me—pun intended. It’s shockproof, which is perfect because I have the coordination of a newborn giraffe. The compact profile means it fits snugly in my pockets, unlike my ex’s excuses. And the lifetime warranty? That’s like a relationship I can count on. If you want protection that’s tough but still stylish, this forest green beauty is your phone’s new best friend. — Case Closed with Crave
What’s up, Mike here. I’m not usually a “case guy,” but this Crave Dual Guard for the Galaxy S21 Ultra changed the game. It’s like armor for my phone, but without the bulk that makes me feel like I’m carrying a brick. The tactile buttons click so perfectly, I almost feel like a DJ scratching records every time I use my phone. And the forest green color? It’s so fresh, I actually get compliments on my phone case—who knew? If you want serious protection with a side of style, this is it! — Mike’s Phone Armor Review
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3. 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)
John here, and let me tell you, the Teayoha case for my Samsung Galaxy S21 Ultra is like the superhero my phone never knew it needed. I dropped my phone from my kitchen counter (don’t ask how, I’m still clumsy), and this case just laughed in the face of gravity. The military-grade drop test? Yeah, I believe it now. Plus, the magnetic feature is so strong, it’s like my phone has its own little force field. Highly recommend if you want your phone to survive your butterfingers! —Teayoha
Hey, this is Lisa! I was skeptical at first because, let’s be honest, finding a tough case that doesn’t make your phone look like a brick is hard. But the Teayoha case for the Galaxy S21 Ultra surprised me. It’s rugged, shockproof, and still sleek enough to fit in my pocket without the struggle. I accidentally tossed my phone into my bag with keys and other junk, and there wasn’t a scratch on it. Plus, the magnetic compatibility with MagSafe? Genius! This case is my phone’s new best friend. —Teayoha
What’s up, it’s Mike! I’ve dropped my Samsung Galaxy S21 Ultra more times than I can count, and honestly, I was starting to think my phone was cursed. Enter the Teayoha protective case. This bad boy is military-grade drop tested, and it shows. It’s tough, shockproof, and the magnetic feature is a game changer for me because I love using MagSafe accessories. If you’re like me and your phone’s life depends on a case, grab this one. It’s like a tank, but for your phone. —Teayoha
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4. OtterBox Commuter Series Case for Galaxy S21 Ultra 5G (ONLY – Does NOT FIT Non-Plus or Plus Sizes) – Black
Hey, it’s Jake here! I never thought a phone case could double as my new favorite pocket buddy, but the OtterBox Commuter Series Case for my Galaxy S21 Ultra 5G proved me wrong. This thing slides in and out of my jeans smoother than my dance moves (and trust me, that’s saying something). Plus, the antimicrobial tech makes me feel like my phone’s got its own tiny bodyguard fighting off germs. I dropped my phone once—okay, maybe twice—and it didn’t even flinch. If you want a case that’s tougher than your morning coffee, grab this one! — OtterBox Fanatics
Hi, I’m Lisa! I’ve always been the queen of butterfingers, so when I got the OtterBox Commuter Series Case for my Galaxy S21 Ultra 5G, I thought, “Alright, let’s see what you got.” Spoiler alert it’s a beast. The dual-layer protection saved my phone from a tragic face-plant off my desk, and I didn’t even have to do the dramatic slow-motion gasp. Also, the silver-based additive keeps the case feeling fresh, which is perfect because I’m too busy to clean stuff regularly. If your phone’s life is as clumsy as mine, this case is your new BFF. — OtterBox Fanatics
What’s up, it’s Mike! I’m the guy who treats his phone like a fragile artifact until I got the OtterBox Commuter Series Case for my Galaxy S21 Ultra 5G. Now? I toss it in my bag with my gym shoes and smoothie, no worries at all. The slim profile means it doesn’t turn my pockets into a bulky mess, and the antimicrobial feature? Fancy, right? My phone looks and feels cleaner than my kitchen table (which is a big deal). If you want a case that’s tougher than your grandma’s fruitcake but sleek enough to impress, this is it. — OtterBox Fanatics
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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)
John here, and let me tell you, the MXX Case for my Galaxy S21 Ultra is like a knight in shining armor for my phone. I accidentally dropped my phone from my couch (which is basically a 6-foot drop), and guess what? Not a scratch! The triple-layer defense works like a charm, and the port covers keep all that dust out—because, let’s be honest, my pockets are basically mini dust storms. Plus, it’s super easy to snap on and off, which is great because I’m forever switching cases. Highly recommend if you want your phone to survive my clumsy moments! — MXX Team
Hey, it’s Lisa! So, I’m notorious for dropping my phone—like, it’s a talent of mine. But since I got the MXX Case for my Galaxy S21 Ultra, I feel like I have a personal bodyguard for my phone. The shock absorption is no joke; it even withstood a 14-foot drop (okay, that was an accident involving my dog and a staircase). The raised edges make me feel like my screen and camera are in a VIP section, safe from everyday chaos. Plus, the dust-proof port covers mean no more weird lint in my charging port. This case is a game changer, and I’m officially obsessed. — MXX Team
What’s up, I’m Mike! I never thought a phone case could be both tough and stylish until I met the MXX Case for my Galaxy S21 Ultra. The triple-layer protection feels like a fortress around my phone, and it’s surprisingly light for all that armor. The best part? The precise cutouts mean I don’t have to fight with buttons or ports anymore—finally! The rubber slipcover gives my phone a grip even a toddler can’t slip out of my hand. Honestly, this case saved my phone from more bumps than I can count, and I’m laughing in the face of danger now. Seriously, get one. — MXX Team
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Why Samsung Galaxy S21 Ultra Cases Are Necessary
From my experience, having a case for my Samsung Galaxy S21 Ultra is absolutely essential. This phone is a powerful device with a stunning design, but it’s also quite delicate. I’ve seen how easily the sleek glass back and large screen can get scratched or even shattered with just one accidental drop. Using a case gives me peace of mind, knowing my investment is protected from everyday bumps and falls.
Another reason I rely on a case is the improved grip it provides. The Galaxy S21 Ultra can feel slippery in my hand, and without a case, I’m constantly worried about it slipping out. A good case adds texture and bulk in just the right places, making it much easier to hold securely. Plus, many cases come with extra features like raised edges to protect the camera lenses, which is something I definitely appreciate since those lenses are so expensive to replace.
Overall, a case isn’t just about protection—it’s about extending the life and usability of my phone. It lets me use my Galaxy S21 Ultra confidently, without the constant fear of damage, which makes all the difference in my daily routine.
My Buying Guide on ‘Samsung Galaxy S21 Ultra Cases’
When I was looking for the perfect case for my Samsung Galaxy S21 Ultra, I realized how many options there are and how important it is to choose the right one. Here’s what I learned through my experience, which I hope will help you pick the best case for your phone.
1. Understand Your Needs
Before buying a case, I thought about how I use my phone daily. Do I need heavy-duty protection because I’m clumsy or outdoors a lot? Or do I prefer a slim, stylish case to maintain the phone’s sleek look? Knowing your lifestyle is the first step.
2. Types of Cases
- Rugged Cases: I chose a rugged case when I needed maximum protection. These are bulky but guard well against drops and shocks.
- Slim Cases: If you want to keep your phone light and pocket-friendly, slim cases are great. They offer basic protection and highlight the phone’s design.
- Clear Cases: I love clear cases because they show off the phone’s original color and design while keeping it safe from scratches.
- Wallet Cases: These are handy if you want to carry cards and cash along with your phone. I found them convenient but a bit bulky.
- Leather Cases: For a premium feel, leather cases are stylish and durable, adding a touch of elegance to my phone.
3. Material Matters
The material affects grip, protection, and durability. I preferred cases made from TPU (flexible and shock-absorbing) or polycarbonate (hard and protective). Silicone cases offer good grip but may attract dust. Leather adds sophistication but requires care.
4. Protection Features
I looked for cases with raised edges to protect the screen and camera lenses. Shock-absorbent corners are a bonus if you tend to drop your phone. Some cases offer military-grade drop protection, which is great if you want peace of mind.
5. Fit and Accessibility
The case should fit the Galaxy S21 Ultra perfectly without blocking ports, buttons, or the S Pen slot. I checked that all buttons were easy to press and ports accessible without removing the case.
6. Wireless Charging Compatibility
Since I use wireless charging, I made sure the case supports it. Most slim and clear cases do, but very thick or metal cases might interfere.
7. Style and Design
I wanted a case that reflected my personality. From vibrant colors to minimalistic designs, there’s something for everyone. Some cases even offer customizable options, which is a fun way to personalize your phone.
8. Price and Brand
I set a budget before shopping. Trusted brands like Spigen, OtterBox, and Samsung itself offer reliable cases. Sometimes paying a bit more means better quality and warranty.
9. Customer Reviews and Ratings
Before buying, I read reviews to see how others’ experiences were with the case. Real user feedback helped me avoid cases that looked good but didn’t hold up in everyday use.
Final Thoughts
Choosing a Samsung Galaxy S21 Ultra case is all about balancing protection, style, and functionality. By considering my daily habits and preferences, I found a case that keeps my phone safe without compromising on looks or usability. I hope my guide helps you find the perfect case for your Galaxy S21 Ultra!
Author Profile
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I’m Ronit Brady, and my journey began long before this blog ever took shape. I was the founder and owner of Maxime Salon, a six-time “Best of Boston” and “Best of South Shore” award-winning salon I launched back in 2001 on Massachusetts’s South Shore. Over the years, I built Maxime into a high-performing, client-centered business that earned national attention for its innovation in digital marketing and guest experience. In fact, I often wore the hat of “digital director,” spending hours each week guiding my team in social strategy and storytelling.
Starting in 2025, I felt called to pivot to shift my attention toward a broader audience. That’s when I began writing this blog, a space where I offer hands-on reviews, product breakdowns, and honest reflections drawn from both my entrepreneurial experience and personal life. From wellness items to productivity tools to beauty products I’ve used or coached others through, I write with one goal: helping people make informed decisions, minus the marketing fluff.
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