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The best Samsung Galaxy S21 Plus cases you can buy

The Galaxy S21 Plus is an awesome phone, but it's also pricey. Keep it safe!
The Best
By
October 23, 2021
Galaxy S21 Plus cases featured
Ankit Banerjee / Android Authority

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

The Samsung Galaxy S21 Plus is an excellent phone, but it’s also pricey. To keep it in pristine condition or add a touch of style, you’ll want a case. Here at Android Authority, we perform extensive testing on both phones and cases, so we’ve done the research for you and picked out the best Samsung Galaxy S21 Plus cases on the market.

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 Plus cases as new options launch.


Best Samsung Galaxy S21 Plus thin case: Spigen Thin Fit

Spigen thin fit case for the galaxy s21 plus
Samsung Galaxy S21 Plus Spigen Thin Fit
This thin and light case will keep your phone safe without adding any thickness or weight. It's not the most protective case on this list, but it can handle the occasional bump or drop.

Pros:

  • Thin and light
  • Tactile button covers
  • Precise cutouts

Cons:

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

It doesn’t get much better than the Spigen Thin Fit if you’re looking for a thin and light case. The simple polycarbonate case comes with a raised camera bump, tactile button covers, and precise cutouts for everything else. The Thin Fit also surprises with how much grip it offered. It’s not the best if you’re clumsy, but it’ll help with the occasional bump or drop.

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

Samsung Galaxy S21 Plus phnx mnml case
Ankit Banerjee / Android Authority

At just 0.35mm thin, you’ll barely even notice that you have a case on your Galaxy S21 Plus. The case works with wireless chargers, is branding-free, and has precise cutouts for the camera, buttons, and charging port.

Buy now from PHNX

Samsung Galaxy S21 Plus caseology nano pop
Ankit Banerjee / Android Authority

If you want to add a little bit of color to your Galaxy S21 Plus, look no further than the Nano Pop from Caseology. It skips the boring matte black finish in favor of a pop (hence the name) of bright color to change things up.

Buy now on Amazon

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


Best Samsung Galaxy S21 Plus clear case: Spigen Ultra Hybrid

sgs21p spigen ultra hybrid 4 3
Samsung Galaxy S21 Plus Spigen Ultra Hybrid
Show off your phone's design while keeping it protected with this excellent clear case from Spigen.

Pros:

  • Relatively thin and light
  • Precise cutouts
  • Good protection

Cons:

  • Clear cases tend to yellow over time
  • Difficult to keep clean

The Spigen Ultra Hybrid offers premium protection from both drops and scratches thanks to its combination of polycarbonate and TPU. You can choose from a fully clear option or add a matte black bumper for some contrast. It’s still quite thin, so you haven’t any issues wirelessly charging your phone with the case on.

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

ringke fusion clear case
Ankit Banerjee / Android Authority

The Ringke Fusion is similar to the Ultra Hybrid but with a softer TPU bumper that makes it easier to remove. Ringke also added a microdot matrix on the inside, which helps prevent the rainbow effect. It’s also cheaper.

Buy now on Amazon

esr metal kickstand case
Ankit Banerjee / Android Authority

This clear ESR case comes with a built-in kickstand that lets you prop the phone up in both portrait and landscape. The metal kickstand is sturdy, and there’s no wobble to worry about.

Buy now on Amazon

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


Best Samsung Galaxy S21 Plus hybrid case: Caseology Parallax

galaxy s21 plus caseology parallax case
Samsung Galaxy S21 Plus Caseology Parallax
You'll get dual-layer protection with the combination of a TPU base and PC bumper while adding a touch of style to your phone.

Pros:

  • Dual-layer protection
  • Tactile button covers
  • Multiple color options

Cons:

  • Difficult to install and remove

Hybrid cases are the way to go if you want added protection without the bulk. And the Caseology Parallax is one of the best options you can get. A TPU case is coupled with a polycarbonate shell to keep the corners and sides safe from bumps and drops. You also have various color options to choose from, like grey, pink, black, and purple.

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

sgs21p spigen neo hybrid 4 3
Ankit Banerjee / Android Authority

The Spigen Neo Hybrid is more protective than the Parallax, with a thicker lip around the phone’s display. Unfortunately, that also makes it quite the feat to install and remove.

Buy now on Amazon

sgs21p cyrill color brick 4 3
Ankit Banerjee / Android Authority

The Cyrill Color Brick isn’t dual-layer like the other two but combines a polycarbonate back and TPU bumper to provide ample protection for the Galaxy S21 Plus. The frosted back panel looks great too.

Buy now on Amazon


Best Samsung Galaxy S21 Plus wallet case: Smartish Slayer

smartish slayer wallet case
Samsung Galaxy S21 Plus Smartish Slayer
Leave your wallet behind with this classy case by Smartish. It offers rugged protection and has room to carry up to three cards and folded cash.

Pros:

  • Can hold up to three cards and folded cash
  • Tactile button covers
  • Precise cutouts
  • Stylish

Cons:

  • Tricky to add cards when the case is on the phone
  • Thick and heavy
  • Difficult to remove

You might expect most wallet cases to go for a familiar folding folio design, but the Smartish Slayer wants to change all of that. It adds a rear-mounted card slot instead, and the design allows you to tote three cards plus a bit of cash or four cards. There’s a nice textured grip to the side rails, and the thick case offers solid protection as well. However, you’ll want to take your cards out if you plan to use wireless charging.

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

sgs21p spigen slim armor cs 4 3
Ankit Banerjee / Android Authority

There’s a handy sliding cover on the back that keeps your cards safe. It’s thinner and lighter than the Slayer but can still hold three cards. It isn’t easy to pull the cards out, though, if you have it packed.

Buy now on Amazon

sgs21p wallet tucch
Amazon

The TUCCH wallet is more traditional, with a folding folio cover that doubles as a kickstand. It’s made with premium PU leather, and you have multiple colors to choose from. It comes with three card slots and a cash pocket.

Buy now on Amazon

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


Best Samsung Galaxy S21 Plus rugged case: Spigen Tough Armor

spigen tough armor rugged case with kickstand
Samsung Galaxy S21 Plus Spigen Tough Armor
Enjoy rugged protection without the bulk with the Spigen Tough Armor. It also has a built-in kickstand to prop up the phone in landscape.

Pros:

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

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, and sometimes requires an extra press to ensure that it’s flush against the case when closed.

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

sgs21p rugged otterbox defender
Amazon

The Otterbox Defender is thick, bulky, and frankly overkill for most users, but it can definitely take a beating. However, if ultimate protection is what you want, this is the go-to. You also get a belt holster with this case.

Buy now from Otterbox

razer archtech pro
Ankit Banerjee / Android Authority

Razer isn’t the first name that comes to mind when thinking phone cases, but the Arctech Pro is excellent. It’s thick and protective, comes with an anti-bacterial coating, and has a thermally conductive layer that’s great to keep the phone cool.

Buy now from Razer

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


How we test phone cases

We rigorously test smartphones, accessories, and other products in our reviews here at Android Authority, so why should phone cases be any different? There are plenty of factors we consider before recommending a phone case.

  • Protection: It’s important to remember that different cases offer different levels of protection. An ultra-thin case is great to keep scratches and smudges away but won’t do much if you drop the phone. We consider factors like corner protection, the raised lip around the display and rear camera, and whether you get covered buttons. For hybrid and rugged cases, we also simulate real-world drops to test durability. For example, if the phone falls while pulling it out of the pocket, or if it slips off of a table.
  • 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: Grip is another important factor to consider. 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 grip.
  • Installation and removal: Installing a case shouldn’t be difficult, and the phone should comfortably snap into place. However, removing a case can be a pain and could 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 that let you show off the phone’s design while keeping the phone safe.
  • Price: Expensive doesn’t always mean better. You can always find $10 cases that offer as much protection, if not more, than $50 options. However, keep in mind that rugged cases or extra features like a kickstand or wallet will likely be more expensive than a standard thin case.