Samsung Galaxy S21: Everything you need to know about Samsung’s flagship phone series
The Samsung Galaxy S21, Samsung Galaxy S21 Plus, and Samsung Galaxy S21 Ultra are the latest 5G flagships from Samsung. They represent the pinnacle of consumer-ready technology in the conventional smartphone form factor. These phones come with class-leading technologies, and for the first time ever, a phone outside of the Galaxy Note lineup is offering the coveted S Pen experience. Samsung has skipped the Note series this year in favor of the Galaxy Z Fold 3 that was recently launched. What this means is if you’re looking for a good do-it-all flagship, the S21 series will continue to remain the best that Samsung has to offer for the average consumer, unless you really want a foldable. The Galaxy S22 series is expected to launch soon early next year but until then, this is all the information you need about the current-gen S21.
Here’s everything you need to know about the Samsung Galaxy S21 series, from specifications to cases and accessories you can buy in case you already have the phone.
Navigate this page:
- SOC, RAM, and Storage
- Camera & Camera Features
- Battery & Charging
- 5G & Connectivity
- S-Pen support
- MST Support and Samsung Pay
- One UI 3.1 and Android 11
- Cases & Accessories
- Price & Availability
- Third-Party Cases and Accessories
Samsung Galaxy S21 series: Specifications
|Specifications||Samsung Galaxy S21||Samsung Galaxy S21+||Samsung Galaxy S21 Ultra|
|Dimensions & Weight||
|RAM & Storage||
|Battery & Charging||
|Security||Ultrasonic In-Display Fingerprint Scanner||Ultrasonic In-Display Fingerprint Scanner||Ultrasonic In-Display Fingerprint Scanner|
|Front Camera(s)||10MP, f/2.2, 1.22µm, 80° FoV, Dual Pixel AF||10MP, f/2.2, 1.22µm, 80° FoV, Dual Pixel AF||40MP, f/2.2, 0.7µm, 80° FoV, PDAF|
|Port(s)||USB 3.2 Type-C||USB 3.2 Type-C||USB 3.2 Type-C|
|Software||Samsung One UI 3.1 based on Android 11||Samsung One UI 3.1 based on Android 11||Samsung One UI 3.1 based on Android 11|
Let’s start with the display on the Galaxy S21 series. All three devices in the series get a Dynamic AMOLED 2x display, with a 120Hz variable refresh rate, a 20:9 aspect ratio, and HDR10+ support. All three devices have an Infinity-O display, which is just Samsung’s marketing term for centered hole-punch displays. You also get the latest Gorilla Glass Victus on the front across all three phones for scratch and drop protection. And as with previous Galaxy S models, the Galaxy S21 series also gets Always-On Display functionality.
The primary difference between the three phones is the size of the display, going from 6.2″ on the regular Galaxy S21 to 6.7″ on the Plus and 6.8″ on the Ultra. Additionally, the regular and Plus variants have a relatively lower-end flat FHD+ panel. The Galaxy S21 Ultra is where things get a little interesting, as its display gets a subtle curve on the edges and a bump up to QHD+ resolution.
It’s also the first time that a Samsung Galaxy flagship is not only getting QHD+ resolution and 120Hz refresh rate, but also 120Hz refresh rate with QHD+ resolution as the option. There’s also a difference in peak brightness, with the Ultra getting as bright as 1500 nits, while the other two are restricted to a still-respectable 1300 nits.
As the screen size differs between the three phones, the dimensions are bound to be different and so is their weight. The weight difference is further compounded by the change in build materials as well. All three devices have an aluminum mid-frame, but the Galaxy S21 gets a polycarbonate back much like the Galaxy Note 20. The Galaxy S21 Plus and Ultra get a Gorilla Glass Victus back.
The other obvious change in design is the rear camera module. It’s got a much more unique look this year, with the camera module flowing over the corner instead of being an island. The camera bump is still present, but it has a larger surface area extending all the way to one corner. Therefore, the phones should have a lesser tendency to wobble when placed down on a table. The Galaxy S21 Ultra has the largest camera module because of the additional camera hardware.
Overall, the phones have an otherwise clean and understated look. The Samsung logo on the back is the only branding (coupled with other mandatory certification brandings as mandated by regional law). The devices have a USB 3.2 Type-C port and a speaker grille on the bottom, and the usual power button and volume rockers on the left. If you are waiting on the headphone jack making a return, you’ll be disappointed as it’s not present this year either. But on the bright side, the entire lineup is IP68 rated for water and dust protection.
For biometrics, Samsung has once again opted for an ultrasonic in-display fingerprint scanner on the series, skipping out on both optical in-display and side-mounted fingerprint scanners. The ultrasonic fingerprint scanner used is the second generation 3D Sonic Sensor from Qualcomm, which is 1.7x larger and 30% faster than the previous generation ultrasonic fingerprint scanner. This ensures that you get a much better unlocking experience than ever before on a Samsung flagship.
Some of the RAM and storage variants may not be available in all colors. Further, the options are likely to be tweaked according to your region as well.
Further, some colors are Samsung.com exclusive. These include Phantom Red and Phantom Gold for the Galaxy S21 Plus, and Phantom Brown, Phantom Navy, Phantom Titanium for the Galaxy S21 Ultra. These colors are available in limited quantities only and are likely to be available only through the pre-order period.
SoC, RAM, and Storage
Samsung is following its usual pattern of splitting up device SoCs for the USA and some other selected regions, and for the rest of the world. The USA and regions like Hong Kong and China get the Qualcomm Snapdragon 888 SoC, while the rest of the world gets the Exynos 2100 SoC. We have dedicated coverage on these SoCs, and we encourage you to check them out for more details.
As is the general theme with the lineup, RAM and storage options on the Galaxy S21 Ultra are more in the overkill territory (12GB + 128GB, 12GB + 256GB, 16GB + 512GB), while the Galaxy S21 and Galaxy S21 Plus get more practical amounts (8GB + 128GB, 8GB + 256GB) to work with. Unfortunately, there is no microSD card support on any of these phones, so pick the right storage amount for you right off the bat.
The camera setup is one of the more defining differences between the Galaxy S21 and Galaxy S21 Plus on one hand, and the Galaxy S21 Ultra on the other. The Galaxy S21 and Galaxy S21 Plus have the same camera setup, while the Galaxy S21 Ultra changes things up a bit.
Galaxy S21 and Galaxy S21 Plus: Front and Rear Camera Setup
For the Galaxy S21 and Galaxy S21 Plus, you get a triple rear camera setup comprising of a primary camera, an ultra-wide-angle camera, and a telephoto camera.
The primary camera is a 12MP f/1.8 shooter with a 1/1.76″ sensor producing images with 1.8µm large pixels. You get Dual Pixel AF as well as OIS on the primary camera.
The secondary camera is a 12MP f/2.2 shooter with a 1/2.55″ sensor producing images with 1.4µm large pixels. The field of view is 120°, which isn’t the widest out there but also not a bad option per se.
The tertiary camera is a 64MP f/2.0 telephoto lens with a 1/1.76″ sensor producing images with 0.8µm large pixels. You get PDAF and OIS on this camera, and its primary use case is for capturing images with 3x optical zoom.
The front camera on both phones is a 10MP f/2.2 shooter that produces 1.22µm pixel size images and has Dual Pixel AF.
Galaxy S21 Ultra: Front and Rear Camera Setup
The camera setup offers one of the highlighting experiences on the Galaxy S21 Ultra. Only the secondary ultra-wide-angle camera is shared over from the Galaxy S21 and Galaxy S21 Plus. All the other cameras are different.
The primary camera is a 108MP f/1.8 shooter with a large 1/1.33″ sensor producing images with 0.8µm large pixels. The phone then combines nine of these pixels into one pixel (nona-binning), giving you an output of 12MP with 2.4µm large pixels.
The other two cameras on the back come with telephoto lenses, each projecting into a 1/3.24″ sensor with large 1.22µm pixels. Using two telephoto lenses essentially provides optical zoom at two different levels. The first is a 10MP f/2.4 shooter that provides 3x optical zoom, while the second is a 10MP f/4.9 shooter that provides 10x optical zoom. Both come with OIS capabilities. Combined with digital zoom, Samsung can provide a seamless optical zooming experience from 1x to 10x, while also promising hybrid zoom capabilities up to 100x, which is marketed as 100x Space Zoom.
The Galaxy S21 Ultra can also shoot 4K video at 60fps across all cameras. If you need even more options, you can click photos in Pro mode to output to a 12-bit RAW file.
The front camera on the Galaxy S21 Ultra is a 40MP, f/2.2 shooter with 0.7µm pixels and PDAF.
What are the new Camera Features?
These new camera software features form a part of One UI 3.1 based on Android 11, but they are worth mentioning on their own as they are quite substantial to the camera experience on the new Samsung Galaxy S21 series:
- Improved 8K Snap: Grab still 33MP photos from your 8K video recording
- Vlogger View: Capture videos with the front and rear cameras simultaneously.
- Director’s View: Capture video with the front and rear cameras simultaneously, while retaining the ability to quickly switch between the multiple rear cameras while accessing a live preview of all the camera outputs.
- Multiple mic recording: Use paired accessories like the Samsung Galaxy Buds Pro to record ambient sound while also recording using the phone’s microphone.
- Single Take: Added new pro-style video settings like Highlight Video and Dynamic Slow-Mo.
- Zoom Lock: Minimize shaky hands and capture clear zoomed images by locking focal point in the center of the frame.
Battery and Charging
Because the phones are different in physical dimensions and have some other physical differences, they also have different sized batteries, going from 4,000 mAh on the regular Galaxy S21 to 4,800 mAh on the Galaxy S21 Plus and 5,000 mAh on the Galaxy S21 Ultra.
Thankfully, their charging capabilities remain the same all throughout (though that may not be a good thing entirely). All three phones get 25W USB Power Delivery 3.0 fast charging, 15W wireless charging, and the ability to provide 4.5W reverse wireless charging. The wired charging solution is definitely not the fastest one around, but it’s universal, so you’ll have great luck finding a compatible charger that does these modest speeds reliably. We are both relieved and disappointed at the same time — relieved for the universality approach, but disappointed because proprietary tech from other companies is quicker by a substantial margin. The universality will be appreciated by users, more so because neither of the three phones will come with a power brick in the box (except in select regions).
5G and Connectivity
5G is standard across the lineup, but a big difference creeps in for certain regions. For instance, if you purchase the device in the USA, you’ll get mmWave support alongside sub-6GHz 5G, while the rest of the world will have to contend with sub-6GHz 5G. So, do keep that in mind if you intend to use the phone outside the region of purchase.
Further, all three phones get Bluetooth 5.1 and NFC, but the Galaxy S21 Ultra gets Wi-Fi 6E support (thanks to the Broadcom BCM4389) while the other two models get Wi-Fi 6.
Ultra-Wide Band tracking is a feature present on the Galaxy S21 Ultra and the Galaxy S21 Plus, but it is missing from the regular variant.
S Pen support
One of the highlights of this year’s release is the inclusion of S Pen support. Only the Galaxy S21 Ultra gets it though, and there are a few caveats around it. For one, the S Pen is not part of the package, and there is no cavity within the device to store the S Pen, so it needs to be purchased separately and stored externally.
Samsung is separately selling cases that have a cavity to store the S Pen. You lose out on Bluetooth-related functionality on the S Pen though, so stuff like Air Trigger and Remote Shutter will not work. We reckon this means that you don’t necessarily need an S Pen too — just about any Wacom stylus should do the trick.
Samsung also plans to sell an S Pen Pro later in the year, so keep an eye on that if you really want to get into the stylus game with the S21 series.
MST Support and Samsung Pay
The Samsung Galaxy S21 series does not come with MST support, restricting itself to NFC technology for payments. The phone does support Samsung Pay in all regions, presuming the feature was already available in those regions.
One UI 3.1 with Android 11
The Samsung Galaxy S21 series comes with an incremental update to Samsung’s UX skin, One UI, in the form of One UI 3.1 based on Android 11. While there are not a lot of ground-breaking feature additions or overhauls, there are a few notable changes:
- Eye comfort shield: Keep your eyes comfortable by limiting blue light and using warmer colors. Using it at night can make it easier to fall asleep
- Unlock with Bixby Voice
- Choose between Google Discover or Samsung Free for feed
- Private Share: Control who gets access to the content you send and how long it is available to them. The feature also has a tool that removes location metadata from photos and videos before sharing. This works on Galaxy smartphones with Android 9 Pie or later. This feature is not available on non-Samsung Android phones.
- OneDrive Integration: Save 8K videos to OneDrive and play them back on your Galaxy S21 device.
- Object Eraser: Remove stray photobombers from your photos.
- Custom Backgrounds during Video Calls
- Google Duo auto-framing
- Find and unlock cars from Audi, BMW, Ford, and Genesis
We have taken a more extensive look at the changes that One UI 3.1 brings along over One UI 3.0, so check that out for a more complete lowdown.
Cases and Accessories
As is tradition now, Samsung is offering a bunch of official cases for the Galaxy S21 Ultra, Galaxy S21 Plus, and Galaxy S21. Their official cases include Smart Covers, a case with an S-Pen, a separate S-Pen, several gorgeous-looking cases including the popular Kvadrat Cover+and more. Of course, the Galaxy S21 range is already proving popular and plenty of people are taking advantage of the best Galaxy S21 Ultra deals and best Galaxy S21 deals, which we’ve rounded up for you.
Beyond just Samsung’s official cases, there are a ton of third-party cases on the market and we’ve rounded them up for you including the Best Thin Cases for the Galaxy S21 Ultra, Galaxy S21 Plus, and Galaxy S21; the best rugged cases for the Galaxy S21 Ultra, Galaxy S21 Plus and regular Galaxy S21; and the best Clear cases for the S21 Ultra, Galaxy S21 Plus, and regular Galaxy S21 model.
Here are the official Samsung cases:
There are two more covers for the Galaxy S21 Ultra, and these come with the S Pen: Silicone Cover with S Pen, and Smart Clear View Cover with S Pen.
Samsung Galaxy S21 series: Pricing and Availability
The Samsung Galaxy S21 series is priced as follows:
|1.||Samsung Galaxy S21 — 8GB + 128GB
(Phantom Violet, Phantom Gray, Phantom Pink, Phantom White)
|Samsung Galaxy S21 — 8GB + 256GB
|2.||Samsung Galaxy S21 Plus — 8GB + 128GB
(Phantom Violet, Phantom Silver, Phantom Black)
| Samsung Galaxy S21 Plus — 8GB + 256GB
|3.||Samsung Galaxy S21 Ultra — 12GB + 128GB
(Phantom Silver, Phantom Black)
|Samsung Galaxy S21 Ultra — 12GB + 256GB
|Samsung Galaxy S21 Ultra — 16GB + 512GB
Note: Additional colors will be sold through Samsung.com. These custom colors are limited in stock and may last only till pre-order periods.
The Samsung Galaxy S21 series is now available on open sale. You can purchase the device by following the links below! Consumers will be able to purchase the devices through Samsung.com, carriers, and online and offline retailers.
The Samsung Galaxy S21 series was available for pre-order from January 20 to January 28, 2021. Customers who pre-ordered a device received Samsung Credits worth $100 with the Galaxy S21, $150 with the Galaxy S21 Plus, $200 with the Galaxy S21 Ultra. All pre-orders also included a free Galaxy SmartTag. Both carrier and unlocked variants of the Galaxy S21 series went on open sale worldwide from January 29, 2021.
In India, customers who pre-ordered the device got a free Samsung Galaxy Smart Tag as well as Samsung Shop Vouchers up to ₹10,000. HDFC Bank customers got up to ₹10,000 cashback, while Samsung Upgrade plans offered an additional bonus of up to ₹5,000. Pre-orders began from January 15, 2021, and early deliveries for these began on January 25, 2021. Open sales began from January 29, 2021, across Samsung.com/in, Samsung Opera House, offline retail outlets, Amazon.in, Flipkart, Crome, and Reliance Digital.
Third-Party Cases and Accessories
Now that the Galaxy S21 series is available on open sale, you can get a fair few options across third-party cases and accessories. We’ve rounded some great options below:
- Galaxy S21 Cases and Accessories
- Galaxy S21 Plus Cases and Accessories
- Galaxy S21 Ultra Cases and Accessories
All of these options are for the regular Galaxy S21 variant:
- Galaxy S21 Deals
- S21 Screen Protectors
- S21 Chargers
- S21 Wireless Chargers
- S21 Best Case Roundup
- S21 Thin Cases
- S21 Clear Cases
- S21 Cheap Cases
- S21 Rugged Cases
- S21 Leather Cases
- S21 Colorful Cases
- S21 Wallet Cases
All of these options are for the Galaxy S21 Plus, the middle child in the family:
- Galaxy S21 Plus Deals
- S21 Plus Screen Protectors
- S21 Plus Chargers
- S21 Plus Wireless Chargers
- S21 Plus Best Case Roundup
- S21 Plus Cheap Cases
- S21 Plus Thin Cases
- S21 Plus Clear Cases
- S21 Plus Rugged Cases
- S21 Plus Wallet Cases
- S21 Plus Colorful Cases
All of these options are for the Galaxy S21 Ultra, the premium top-tier flagship:
- Galaxy S21 Ultra Deals
- S21 Ultra Screen Protectors
- S21 Ultra Chargers
- S21 Ultra Wireless Chargers
- S21 Ultra S Pen and Stylus Roundup
- S21 Ultra Best Case Roundup
- S21 Ultra Cheap Cases
- S21 Ultra Thin Cases
- S21 Ultra Clear Cases
- S21 Ultra Rugged Cases
- S21 Ultra Wallet Cases
- S21 Ultra Leather Cases
We’ve also reviewed a few accessories, so be sure to check out our thoughts before you purchase:
- Samsung Galaxy S21 Ultra Silicone Case Review: Slim form factor, but how does it feel?
- Samsung Galaxy S21 Ultra Rugged Protective Case Review: Tough, but is it worth the price?
- Samsung Galaxy S21 Ultra S-View Flip Cover Case Review: Protect your phone & see your notifications
We’ll be trying out more accessories in the future, so stay tuned for further recommendations!
Samsung devices are not considered very developer-friendly, namely due to Knox and the limitations that it brings along for the community. Nonetheless, you can still partake in some custom development work — just know that the process may be more difficult than friendlier devices, and the results may not be at par with your expectations.
You can try your hand at custom development works with this unofficial TWRP port for the Samsung Galaxy S21 series. Note that flashing any custom recovery will trip Knox, and you will not be able to take OTA updates on the phone anymore.