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Quick tech specs
  • Back cover for cell phone
  • synthetic rubber
  • for Samsung Galaxy S21 5G
  • polycarbonate
  • black
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Handle any project with OtterBox Defender Series, the protective Galaxy S21 5G case that delivers legendary defense. Its multi-layer construction guards phones against serious drops, dirt, scrapes and bumps. Plus, the included holster doubles as a belt clip or hands-free kickstand.

This item was discontinued on September 23, 2022

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OtterBox Defender Series - back cover for cell phone
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OtterBox Defender Series - back cover for cell phone is rated 4.41 out of 5 by 76.
Rated 5 out of 5 by from Perfect Fit perfect fit....comfortable feel in your hand... awesome case.
Date published: 2022-03-04T00:00:00-05:00
Rated 5 out of 5 by from Galaxy S21 5G Defender Series Case Excellent fit. All as should be. Recommend a screen saver as unit does not come with.
Date published: 2022-02-17T00:00:00-05:00
Rated 5 out of 5 by from Screen protector missing I bought an original pixel XL and bought an OtterBox defender and the Pixel XL is still working today, still looks great but it had a screen protector. So I would like to whine a little bit about that fact I'm sure the new 21s screen is hot tech and would benefit from touching your flesh. I don't want it to break.That's why we put our phones in these cases. So you should have a case with the screen protector for those that don't care about anything but the phone and then have one without who just loves the feel of the glass against their flesh.
Date published: 2022-03-18T00:00:00-04:00
Rated 5 out of 5 by from Best case The case fit perfectly to the phone and very strong
Date published: 2021-02-13T00:00:00-05:00
Rated 5 out of 5 by from It's very tough! This is my first Otter box and I'm glad I bought it.
Date published: 2021-02-05T00:00:00-05:00
Rated 5 out of 5 by from No screen protector option for S20 5G I have bought these for years because of the screen protector. Now they have removed this option. Will never buy again.
Date published: 2021-02-13T00:00:00-05:00
Rated 5 out of 5 by from Great Case This is a great case to protect your phone from accidental drops to everyday wear and tear!
Date published: 2021-02-09T00:00:00-05:00
Rated 5 out of 5 by from Ok case, but high price I bought this case purely for the charger port cover and durability. Unfortunately when I received it I notice the design is different from that of my older phone and there is a hole through the charger plug that lines up where you stick in the pin to remove the Sim card. Why?!? This defeats the purpose and leaves room for additional dust/moisture.
Date published: 2021-02-13T00:00:00-05:00
Rated 5 out of 5 by from Best case out there Reliability durability for protection of your phone or device
Date published: 2021-02-17T00:00:00-05:00
Rated 5 out of 5 by from Great phone case! I have used the Otterbox Defender series case on my last 2 cell phones and was totally happy with its performance, so I naturally bought it for my current phone. They have made the case trimmer, yet just as rugged as previous cases. My hat off to Otterbox. Great job!
Date published: 2021-02-19T00:00:00-05:00
Rated 5 out of 5 by from 15' Drop Four days after my purchase I managed to drop my phone 15' onto a concrete floor. After getting down to my new phone I was honestly amazed that there wasn't any signs of damage anywhere on the case or the phone. Definitely saved me from a costly replacement.
Date published: 2021-02-20T00:00:00-05:00
Rated 5 out of 5 by from S9 case was better Bought a month ago. The belt clip is weak and spins with little resistance. Just bump something and the clip snaps into the open position, 1/2 of the time the phone does not snap into the holder and falls off the belt clip and into the snow.. The S9 case was better quality. Very disappointed in the quality from otterbox with the S21 belt clip.
Date published: 2021-02-21T00:00:00-05:00
Rated 5 out of 5 by from Works extremely well! Already dropped the phone in the case on tile. Protected completely
Date published: 2021-03-10T00:00:00-05:00
Rated 5 out of 5 by from Best purchase ever So happy with the product! Looking forward to keeping my phone safe all the time! Will refer to my friends as well! Thank you OtterBox!
Date published: 2021-02-24T00:00:00-05:00
Rated 5 out of 5 by from S21 5G Purchased a defender recently for my new S21 5G. Case fits perfect over the phone and has a good secure feel when usung the phone. My only gripe is how it locks into the holster. It barely locks in and slight touch on the release tab frees it. Already had a few instances where the phone was hanging out and close to falling before I realized it. Improve the holster latch and this will be a 5 star combo.
Date published: 2021-03-05T00:00:00-05:00
Rated 5 out of 5 by from Best phone protection ever!! This is the best phone protection that I bought in the last year. It really does protect the screen when you drop your phone.
Date published: 2021-03-05T00:00:00-05:00
Rated 5 out of 5 by from Great look I just bought this for my Samsung Galaxy S21 and so far I love the protection and the style. I also love the color. Just wish you would make more with different colors.
Date published: 2021-03-05T00:00:00-05:00
Rated 5 out of 5 by from Actual directions would be good This is not the first case I have bought from Otterbox. One I had in the past was destroyed protecting my phone when it got run over by a car. When I got this one the issue I had was the lack of directions other than drawings. A new user would have problems. The rubber outer was very stiff and I had trouble removing it from the plastc inner case. Again, no written directions that you had to disassemble the case or how to do it. Not having a screen protector at this price is questionable.
Date published: 2021-03-06T00:00:00-05:00
Rated 5 out of 5 by from Well worth the money Got my case a month ago except for the shipping company delays the case is great
Date published: 2021-03-03T00:00:00-05:00
Rated 5 out of 5 by from It’s an OtterBox. Need I say more? Fit like it should and feels so secure. I love it!
Date published: 2021-02-22T00:00:00-05:00
Rated 5 out of 5 by from Not as good as it used to be The case is still tough and protective. I wish it still came with a screen protector. The protector I bought doesn't work with the fingerprint reader so now I have to try another type. The phone also doesn't fit in the belt clip holder as tightly as it used to. In the older one I had, when you put the phone in, there was no give, it was snugly in the holder. Now, after you press the phone into the holder and it clicks, you can press on the phone and it moves in the holder and springs back. It hasn't fallen out; it just feels less secure.
Date published: 2021-02-22T00:00:00-05:00
Rated 5 out of 5 by from Great Product Bought 2 of these for my wife's and son's phones, they fit great and of course keep them safe. My wife likes the fact that they make the phone easier to grip and with my son it keeps the phone well protected.
Date published: 2021-03-01T00:00:00-05:00
Rated 5 out of 5 by from The new S21 case i like it alot i wish i had some extra belt clips its hard to get to the company to a live agent
Date published: 2021-02-25T00:00:00-05:00
Rated 5 out of 5 by from Love my Otterbox I love Otterbox. I have had Otterbox Defenders for years. Best case ever. I don't worry if I drop my phone because this case protects your phone..
Date published: 2021-02-27T00:00:00-05:00
Rated 5 out of 5 by from A necessity for a cellphone You must provide instructions for dummies to install it. It took me a while to figure out that it is not one piece but three.
Date published: 2021-02-26T00:00:00-05:00
Rated 5 out of 5 by from Amazing product So worth the purchase, I've already dropped my new S21 multiple times and I know this box will protect it for years to come. You won't need to buy another cover, excellent product
Date published: 2021-03-02T00:00:00-05:00
Rated 5 out of 5 by from Great cover Best cover I've ever used and I've tried many well made
Date published: 2021-02-26T00:00:00-05:00
Rated 5 out of 5 by from Very reliable phone case... I've always got in OtterBox case from my phone because they are very reliable and I have never had a problem with them besides wearing them out
Date published: 2021-03-01T00:00:00-05:00
Rated 5 out of 5 by from NOT QUITE GOOD. the Otter Box defender phone case: Galaxy S-21 1. Expensive, $49.95. 2. Does not include a screen protective screen cover. 3. Belt clip seems like it could easily release the phone.
Date published: 2021-02-25T00:00:00-05:00
Rated 5 out of 5 by from Great quality and non slip Love this phone case! Recently got the S21 5g galaxy phone and this case is easy to put on and take off. Love the slight texture of the outer case!
Date published: 2021-03-02T00:00:00-05:00
Rated 5 out of 5 by from My 4th one This is my 4th one and i have never had an issue with phone breakage, although i have dropped my phones several times. I did break off a corner of the case one time when I dropped it it hit just right but the new one was cheaper than a new phone
Date published: 2021-03-04T00:00:00-05:00
Rated 5 out of 5 by from Great phone case I have used otterbox for my last 3 phones and it has protected my phone from me dropping it several times.
Date published: 2021-03-09T00:00:00-05:00
Rated 5 out of 5 by from Smart Decision in Protecting My New Phone Having the Otter Box Defender case makes me feel so much more secure while handling my phone. I'm very happy I made this choice.
Date published: 2021-03-07T00:00:00-05:00
Rated 5 out of 5 by from Surprisingly flimsy at bezel Until yesterday, I've been happy to have this case even at the price point. For the money, though, I wouldn't expect it to have started creaking when I use my power and volume buttons. I disassembled it and found that the upper frame bends with very little force applied. Reassembled the case to see if it was a fluke but unfortunately the issue persists.
Date published: 2021-03-20T00:00:00-04:00
Rated 5 out of 5 by from not worth 60+ dollars no glass protection not real pleased with this case. my s7 was superior
Date published: 2021-03-17T00:00:00-04:00
Rated 5 out of 5 by from Always Protect With Otterbox Big fans of Otterbox at our house and chose the Defender for our new S21 5Gs. Easy install and nice design. It's sleek enough to fit comfortably in my small hands, and doesn't look boxy like the older Defenders. Wish they offered a wider array of colors. Overall very happy with the Defender, as it really does a great job of protecting our phones.
Date published: 2021-03-21T00:00:00-04:00
Rated 5 out of 5 by from Ok It's okay but no where as good as the previous styles. And color choice is limited to blue gray or black. What a joke. Boo Otterbox and their new engineers.
Date published: 2021-03-08T00:00:00-05:00
Rated 5 out of 5 by from Good but not the same There is no screen protector on the case for the Samsung galaxy s21. Every other otterbox I have had has had a screen protector. I even bought the same model as I always have.
Date published: 2021-03-13T00:00:00-05:00
Rated 5 out of 5 by from Great case Case works very well. Holster is good except the clip. It needs to have a wider slot for a thicker belt. Having worked in emergency services, I typically wear a thick belt designed for a firearm holster or other emergency gear. The clip won't close on the belt and falls off easily.
Date published: 2021-03-23T00:00:00-04:00
Rated 5 out of 5 by from Great Product!!! Very easy to purchase and protects my phone from being damaged
Date published: 2021-03-23T00:00:00-04:00
Rated 5 out of 5 by from otterbox defender I only purchase defender cases for my electronics. I have dropped my phone from 4 stories high and had no damage. I swear by this product and would recommend it to anyone.
Date published: 2021-04-11T00:00:00-04:00
Rated 5 out of 5 by from Very good product Every thing fit as it should very excellent craftmsnship
Date published: 2021-04-14T00:00:00-04:00
Rated 5 out of 5 by from Best Phone Case Protector This is the 2nd time buying a Defender series phone case . It's Hands down the best protection phone case on the Market!! It's the only phone case I will ever buy "Otterbox" 4 Stars
Date published: 2021-04-15T00:00:00-04:00
Rated 5 out of 5 by from Similar to my S7 Case Its similar to the S7 case which I liked, now the S21 is doing its job.
Date published: 2021-04-13T00:00:00-04:00
Rated 5 out of 5 by from No screen protector, camera vulnerable, hard edge This case does not come with a screen protector. One needs to buy that separately. I did the online chat to discuss, but there was some miss-communication. Not Otterbox fault but the big opening for the cameras appears to leave them vulnerable. Again need an additional piece. Spending $50+ on a case and still have to buy additional pieces to protect the phone is disappointing. The case is sleek but has a square edge on the bottom side. Less comfortable than my previous case.
Date published: 2021-04-13T00:00:00-04:00
Rated 5 out of 5 by from Best cover I have found I like the way it wraps the phone and protects. It has a grip able texture.
Date published: 2021-04-14T00:00:00-04:00
Rated 5 out of 5 by from Great product Bought 2 a month ago and they are great would recommend to anyone.
Date published: 2021-04-18T00:00:00-04:00
Rated 5 out of 5 by from 2nd time purchasing otterbox for my phone Happy to have the protection of Otterbein on my phone!!
Date published: 2021-04-19T00:00:00-04:00
Rated 5 out of 5 by from Never buy a phone w/o my Defender Series Been using the Defender for years. You cant go wrong. My only complaint is they no longer come with the built in screen cover. Still wouldn't use anything else though. Otterbox customer service is outstanding.
Date published: 2021-04-02T00:00:00-04:00
Rated 5 out of 5 by from Good otter box I had my otterbox for alittle over a month now it works great and I use it everyday at work and I drop my phone alot. The case doesn't have any marks so if u want a otterbox for ur galaxy s21 make sure u get the defender one, u won't be disappointed at all. Yes its 60 dollars but its worth every penny. Shipping was alittle slow but well worth the wait....
Date published: 2021-03-31T00:00:00-04:00
Rated 5 out of 5 by from I fully Trust Otter Box Defender Series Every Galaxy phone I have ever had I have protected them with the Otter Box Defender Series. They have saved my phone over and over again. Many times I have dropped my phone onto various surfaces even concrete and never a scratch. So whenever I upgrade, before I activate I make sure I already have my Otter Box Defender to protect this asset.
Date published: 2021-03-30T00:00:00-04:00
Rated 5 out of 5 by from Excellent but could use I love this product. It's amazing and I've always bought defender series. I ALMOST bought the plus version but what's missing from this and that is a built in screen protector! I would pay more for it. Some other would to i'm sure. Thank you for the great product, sorry for the weird review.
Date published: 2021-04-10T00:00:00-04:00
Rated 5 out of 5 by from GIVES ME CONFIDENCE KNOWING MY PHONE IS SAFE! THRILLED KNOWING MY NEW PHONE IS PROTECTED FROM THE VICISSITUDES OF LIFE!
Date published: 2021-04-28T00:00:00-04:00
Rated 5 out of 5 by from Works good Fit and feel great. My first protector without being fully enclosed, have used Lifeproof in the past. This particular phone S21, ratings not good with Lifeproof. So trying Otterbox first time. Minimal bulk, I am extremely careful with my phone. Rarely drop. I am using without screen protector, saw reviews being not so great for Otterbox screen protector. Overall really like Defender case, confident in ability to protect my phone.
Date published: 2021-04-27T00:00:00-04:00
Rated 5 out of 5 by from Tough as you can get Always my go to protection for any phone i purchase. I can count on OTTER BOX damage prevention!
Date published: 2021-04-27T00:00:00-04:00
Rated 5 out of 5 by from excellent quality boughtv the box three weeks ago as i am terrible for dropping phones, easy to read instructions, easy install and fantastic quality
Date published: 2021-05-14T00:00:00-04:00
Rated 5 out of 5 by from Took a lickin! I bought this a month ago for my new phone. I am very hard on everything(says my wife so the Defender series is perfect for me. It seems this day the phone dislodged or fell out of my clip in the driveway. Who but my Great Pyrennes found it. Smelling like Dad or Alpha, they used it as a chew toy until I notice my phone was missing. After my wife called the phone several times, I realized it was not at the mailbox, not in my truck so I searched the yard. This is what I found.(see Photo). Truly the Defender case took a Licking but the phone came out unscathed. New warranty case on the way. All is great, and the phone is fine. The Defender Series definitely defended off my dogs. Thanks OtterBox, Greg V from SC
Date published: 2021-07-09T00:00:00-04:00
Rated 5 out of 5 by from Two Otter odes are better than one I don’t have a galaxy phone, I have an IPhone 12, and got a Otter box Defender for my phone. Since taking a lot of photos I wanted the phone protected. I especially like the fact that the phone connect to the charger has a flap that covers the opening. This is the second Otter box phone case I’ve had and they have both been perfect!
Date published: 2021-06-20T00:00:00-04:00
Rated 5 out of 5 by from Great Sturdy Case Love the case, feels great in my hands and doesn't slide out of my pockets while working or playing outside. I only wish there was a waterproof option.
Date published: 2021-06-25T00:00:00-04:00
Rated 5 out of 5 by from ALWAYS USE OTTERBOX Got new phone, SAMSUNG S21 5G at Costco and I immediately ordered my OTTERBOX CASE. This is the third or fourth case for the three of four cell phones I have had since this type of case was recommended to me. I like it because it keeps my cellphone in a safe place always, especially when on my tractor or working outdoors.
Date published: 2021-06-24T00:00:00-04:00
Rated 5 out of 5 by from What a rip off...not worth the money That was my last otterbox I will never buy again not worth the money
Date published: 2021-06-26T00:00:00-04:00
Rated 5 out of 5 by from Screen saver I bought this and I thought the screensaver would come with it but it did not
Date published: 2021-07-13T00:00:00-04:00
Rated 5 out of 5 by from S21 Otter Box Always reliable & great customer service. Definitely recommend
Date published: 2021-05-06T00:00:00-04:00
Rated 5 out of 5 by from Best Phone Protector Ever I bought the same Defender Case Series for my previous phone. It worked great so I bought another one for my new phone. It does exactly what they advertise it to do.
Date published: 2021-05-31T00:00:00-04:00
Rated 5 out of 5 by from Amazing product! I bought this case about 2 months ago and I'm beyond pleased. Works amazing, I feel like I have the best protection out there for my new S21. It is 5G compatible and keeps the dirt out when I'm working. Would recommend to everyone looking for a top notch phone case!
Date published: 2021-05-31T00:00:00-04:00
Rated 5 out of 5 by from It Stinks..... I bought it and it doesn't work the greatest for the S21. It doesn't fit good it doesn't hang on to the phone and has fallen out several times. Not only that it does not have the screen cover That they used to have on them so the screen is unprotected and has already been scratched. Scratched screen and a broken camera is all I have gotten so far out of this Otterbox.
Date published: 2021-06-22T00:00:00-04:00
Rated 5 out of 5 by from Best in the industry It isn't fashionable but is it practical. I've had OtterBox on my phones since the Samsung Galaxy S5 and it holds up to the hype in terms of taking drops and damage. The case will wear and tear and break overtime; especially the flap to that requires you to open and charge our phone. However, even so, they still hold up to wear and tear compared to other manufacturer covers I've had over the years...no matter how worn that cover ends up.
Date published: 2021-08-18T00:00:00-04:00
Rated 5 out of 5 by from Need more variety Bought because of last one I purchased. Protects phone but would have liked a better selection. Had choice of black or navy blue.
Date published: 2021-09-07T00:00:00-04:00
Rated 5 out of 5 by from Working well This is my first time purchasing this type of defender. .I am pretty hard on phones and I usually get the heavy duty one. I like the product so far
Date published: 2021-10-01T00:00:00-04:00
Rated 5 out of 5 by from great product Love the otter boxes, great protection, phone fits really good. Had it for my samsung S9, phone still looked like new after 3 years, my only complaint is that the phone does not hold as strong on the belt clip as it did with the S9
Date published: 2021-09-13T00:00:00-04:00
Rated 5 out of 5 by from very good purchase it is great fit, helped enhance the speaker for calls
Date published: 2021-08-08T00:00:00-04:00
Rated 5 out of 5 by from Always go Otter! I bought this case (actually, two cases for our new phones. I would never use any other case! When I turned in my old phone that had been kept in an Otter case for the life of my phone, it was in “pristine” condition and I received a $500 trade in value. We are sold on Otter. After my husband forgot his phone on the roof of his car and it fell off onto the California highway, when he finally found it, it was still working! The case was scarred, but it protected the phone.
Date published: 2021-08-07T00:00:00-04:00
Rated 5 out of 5 by from Otterbox is the best product I've ever had I love my case I have used auto Box forever... I'm disappointed because I am still awaiting a credit for the wrong case that was ordered for almost 3 weeks
Date published: 2021-09-06T00:00:00-04:00
Rated 5 out of 5 by from Stylus Bought this for the two new 21s Samsung phones. protects, looks good and functions well
Date published: 2021-08-28T00:00:00-04:00
Rated 5 out of 5 by from THE BEST! WORTH IT! LOVE this phone case. The entire case is made of that slip resistant rubber feeling material...the ENTIRE CASE...not just a few spots like a lot of other cases. My last case might as well have been made of butter because that thing slipped out of my hands daily. This raises above the phone surface so if it falls face down on a flat surface, the phone should be OK. Easy to assemble, no camera or flashlight blockage. I don't use the clip on, just the other portion. Get this if you have butter fingers...haven't dropped this phone a single time since getting this case over a month ago. 5 stars!!! ?????
Date published: 2021-10-16T00:00:00-04:00
Rated 5 out of 5 by from Sturdy! Had to get a new phone, have been using Otterbox on previous phones, just sticking with it! Never disappointed..
Date published: 2021-11-26T00:00:00-05:00