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The best Samsung Galaxy S21 Ultra cases you can buy

You've already splurged on a premium device, now it's time to keep it safe from harm.
By
December 25, 2021
Samsung Galaxy S21 Ultra Silver slate
Robert Triggs / Android Authority

The Samsung Galaxy S21 Ultra is one of the best Android smartphones you can get, but it’s also one of the most expensive. You definitely don’t want it to get damaged from an accidental bump or drop. A good case is a great way to keep your phone protected. Here at Android Authority, we extensively test both phones and cases, so we’ve done the research for you. Here’s a look at some of the best Samsung Galaxy S21 Ultra cases you can get.

Our quick picks for the best Samsung Galaxy S21 Ultra cases:

Our picks include thin cases, rugged cases, wallet cases, and more. If you’d like to learn more about our favorite case brands or other smartphone accessories we recommend, check out our guides below.

See also: Best case brands | Mobile accessories

Editor’s note: We’ll update this list of the best Samsung Galaxy S21 Ultra cases as new options launch.


Best Samsung Galaxy S21 Ultra thin case: Spigen Thin Fit

spigen thin fit
Samsung Galaxy S21 Ultra Spigen Thin Fit
The Spigen Thin Fit is a thin and light case that will help keep the phone scratch-free. For drop protection, you might want to check out the more protective cases on this list.

Pros:

  • Thin and light
  • Tactile button covers
  • Precise cutouts

Cons:

  • Not as protective
  • Only one color option (black)
  • Not the easiest to remove

If you’re looking for a thin and light case, this case’s name is self-explanatory. The Spigen Spigen Thin Fit is a polycarbonate case that snaps onto the phone. It comes with a raised camera bump, button covers, and precise cutouts for everything else. Despite being a hardshell case, it also offers an impressive grip. That said, it’s not the best option if you’re particularly clumsy. However, it can manage the occasional bump or drop.

Looking for more thin Samsung Galaxy S21 Ultra case options? We also recommend:

Ringke Air S
Amazon

The Ringke Air-S looks like the Thin Fit but is a great soft TPU alternative with a matte finish for extra grip. You also have a few color options to choose from — black, lavender, and pink sand.

Buy now on Amazon

Looking for more? Check out our list of the best Samsung Galaxy S21 Ultra thin cases.


Best Samsung Galaxy S21 Ultra clear case: Spigen Ultra Hybrid

spigen ultra hybrid
Samsung Galaxy S21 Ultra Spigen Ultra Hybrid
Show off your phone's design with this excellent clear case from Spigen. A hard shell polycarbonate back and TPU bumper also do a great job of keeping your Galaxy S21 Ultra protected.

Pros:

  • Relatively thin and light
  • Precise cutouts
  • Good protection

Cons:

  • Clear cases tend to yellow over time
  • Difficult to keep clean
  • Not the easiest to remove

The Spigen Ultra Hybrid offers good protection for the Galaxy S21 Ultra. With the combination of a polycarbonate back and TPU bumper. You have the choice between a clear option or one with a matte black bumper. It’s a thin case as well, so you haven’t any issues with wireless charging even if the case is on.

Looking for more clear Samsung Galaxy S21 Ultra case options? We also recommend:

Ringke Fusion clear case
Amazon

The Ringke Fusion is similar to the Ultra Hybrid. The TPU bumper is softer, though, making it easier to install and remove. You also have the choice of different textures and designs to add grip and style.

Buy now on Amazon

esr metal kickstand case for the galaxy s21 ultra
Amazon

This clear case from ESR has the benefit of a built-in kickstand that lets you prop the phone up in both landscape and portrait. The metal kickstand is strong and sturdy and snaps flush with the case when not in use.

Buy now on Amazon

Looking for more? Check out our list of the best Samsung Galaxy S21 Ultra clear cases.


Best Samsung Galaxy S21 Ultra hybrid/regular case: Caseology Nano Pop

Samsung Galaxy S21 Ultra caseology nano pop
Samsung Galaxy S21 Ultra Caseology Nano Pop
If you're looking for something more than a boring black case, the Caseology Nano Pop is the one to get. A "pop" of color adds an interesting contrast that looks really good.

Pros:

  • Thin but good protection
  • Tactile button covers
  • Multiple color options
  • Nice “pop” of color

Cons:

  • Button covers are a little stiff

Hybrid cases are the way to go if you want added protection without the bulk. And the Caseology Nano Pop is an excellent option. It’s primarily a TPU case with a PC casing for the camera. The highlight here is the various color options available, with a “pop” of contrast that looks great.

Looking for more hybrid Samsung Galaxy S21 Plus case options? We also recommend:

spigen neo hybrid
Amazon

The Spigen Neo Hybrid is more protective than the Nano Pop, with a combination of a TPU case and polycarbonate bumper. Unfortunately, the hard bumper also makes it quite difficult to install and remove.

Buy now on Amazon

Spigen liquid air p case with S pen slot
Amazon

If you’re an S Pen user, the Spigen Liquid Air P is the case to get to make up for the lack of a built-in stylus slot in the S21 Ultra. It’s a thin and light case with a ridged back for additional grip.

Buy now on Amazon


Best Samsung Galaxy S21 Ultra wallet case: TUCCH wallet

tucch wallet with four card slots and cash pocket
Samsung Galaxy S21 Ultra TUCCH wallet
This faux leather wallet case comes with four slots for credit cards and ID, along with a large pocket for cash. The folio cover keeps the display and also doubles as a kickstand.

Pros:

  • Can hold up to four cards and cash
  • Folio cover doubles as a kickstand
  • Stylish
  • Plenty of color options
  • RFID blocking

Cons:

  • Magnetic closure might loosen over time
  • Need to take the phone out for wireless charging

The TUCCH wallet comes with a classic wallet phone case design. The case is made with premium PU leather that looks stylish and feels great. The folio cover doubles as a kickstand and also comes with an additional layer for RFID blocking. A magnetic clasp keeps the cover closed. The case comes with four card slots and a large pocket for cash. You also have the choice of nine different colors.

Looking for more Samsung Galaxy S21 Ultra wallet case options? We also recommend:

spigen slim armor cs wallet case
Amazon

There’s a handy sliding cover on the back that keeps your cards safe. It’s thinner and lighter than a traditional wallet but can still hold three cards. It isn’t effortless to pull the cards out, though.

Buy now on Amazon

Vena vcommute wallet case
Amazon

This case comes with a hidden card slot that can comfortably hold a couple of cards (it’s a squeeze with three). It also comes with a multi-angle lock stand. The vCommute is a little bulky but offers excellent protection because of it.

Buy now on Amazon

Looking for more? Check out our list of the best Samsung Galaxy S21 Ultra wallet cases.


Best Samsung Galaxy S21 Ultra rugged case: Spigen Tough Armor

spigen tough armor
Samsung Galaxy S21 Ultra Spigen Tough Armor
Keep your phone completely safe from bumps and drops with the Spigen Tough Armor. It's relatively thin for a rugged case and also comes with a built-in kickstand.

Pros:

  • Good protection without the thickness
  • Allows wireless charging
  • Mil-grade certified

Cons:

  • Flimsy plastic kickstand

The Tough Armor is one of the most durable cases Spigen makes, and it offers plenty of hybrid protection. You’ll find a layer of soft TPU that’s great against drops and a tough polycarbonate shell to keep scratches at bay. It even packs a built-in kickstand to prop the phone up in the landscape orientation. The kickstand is a little flimsy, though, which is a problem with a relatively heavy phone like the Galaxy S21 Ultra.

Looking for more rugged Samsung Galaxy S21 Ultra case options? We also recommend:

otterbox defender
Amazon

The Otterbox Defender is thick and bulky, but it’s built to take a beating. Cases like the Defender might be overkill for some users, but you will get complete protection for your phone. The case also comes with a belt clip holster.

Buy now on Amazon

uag mallard galaxy s21 ultra rugged case
Amazon

The UAG Mallard is relatively thin and light for a rugged case but doesn’t compromise on safety. A thick bumper offers extra corner protection, and ridges along the sides help with grip. It’s still thin enough to allow wireless charging and NFC payments.

Buy now on Amazon

Looking for more? Check out our list of the best Samsung Galaxy S21 Ultra rugged cases.


How we test phone cases

We rigorously test smartphones, accessories, and other products in our reviews here at Android Authority, and there are plenty of factors we consider before recommending a phone case. This is particularly important with the large, heavy, and generally unwieldy Galaxy S21 Ultra.

  • Protection: Different cases offer different levels of protection. While an ultra-thin case is great to keep the phone scratch-free, it won’t do much in case of a drop. We simulate real-world drops to test durability for hybrid and rugged cases, like if the phone falls while pulling it out of the pocket. We also look at corner protection, the lip around the display and rear camera, and whether you get covered buttons.
  • Build materials and quality: Poor-quality polycarbonate cases are prone to cracking when installing or removing them. The fit also matters. If you have to apply a lot of pressure to remove a case, the case will crack. With softer TPU cases, continuously removing the case might cause it to loosen around the corners, affecting the fit and protection you will get.
  • Grip: You don’t want a case that will slip out of your hand or slide off a table. Apart from hands-on testing, we slide the phone across different surfaces like wood and marble to see how slippery (or not) it might be. Cases get extra points if they have ridges or bumps along the sides or back to help add to the grip.
  • Installation and removal: Installing a case shouldn’t be difficult, and we don’t consider it if a case can’t even be installed easily. However, removing a case can be a pain with even high-quality cases and potentially damage your phone. It’s a big no-no if you have to apply a lot of force to the point where you feel the phone almost bending.
  • Design and colorways: Design and color are personal choices, but it’s nice to have options. We also have a dedicated category for clear cases to show off the phone’s design.
  • Price: You don’t have to spend too much to get a good case. You can always find $15 cases that offer as much protection, if not more, than $75 options.