A comparison of specs, key information, reviews, and best pricing from top retailers
Last updated -- hours ago | Report incorrect information
Company ProductName Specs
Company ProductName Specs
What we think
The PerfectRec phone team Learn more
Updated February 12, 2024·
If you're looking for a phone with a larger screen and better battery life, the Galaxy S21+ may be a good choice, as it has a bigger battery and a larger display compared to the Galaxy S24. However, the Galaxy S24 offers better overall camera performance, including higher megapixel counts, telephoto capabilities, and a more versatile camera system, which could be important if you take a lot of photos and videos. The S24 also has a brighter screen, which might be preferable in sunny conditions. That said, the Galaxy S24 is more expensive, so if budget is a key concern, the Galaxy S21+ could offer significant savings. Both phones share the same storage capacity, RAM, and similar battery life but have design differences like the S24's curved screen edges. Additionally, both run on Android and offer comparable performance, so your choice may hinge on how much you value screen size, battery capacity, and superior camera features versus the price difference. Give Feedback
this description is based on the product variant with some specs and product variant with some specs. At the time of writing, the variant with some specs cost some dollars and the variant with some specs cost some dollars.
Advantages of the Samsung Galaxy S21+
- The Samsung Galaxy S21+ has no clear advantages over the Samsung Galaxy S24.
Advantages of the Samsung Galaxy S24
- Very good for taking photos
- Good for recording videos
Key differences
Overall Camera Quality
7.2
8.4
The Samsung Galaxy S24 has very good overall camera quality, while the Samsung Galaxy S21+ has good overall camera quality.
The Samsung Galaxy S21+ offers good selfie capabilities whereas the Samsung Galaxy S24 excels with its selfie camera being rated as very good, indicating a significant improvement in selfie camera performance on the newer model. Alongside this, the Samsung Galaxy S24 outperforms the S21+ in numerous other camera aspects such as photos resolution, dynamic range, low light performance, and versatility, making it the better choice for photography enthusiasts.
Photo Quality
7.0
8.5
The Samsung Galaxy S24 takes very good photos, while the Samsung Galaxy S21+ takes good photos.
The Samsung Galaxy S21+ takes good selfies, benefiting from a strong performance in the selfie quality department, whereas the Samsung Galaxy S24 underperforms in this aspect despite having higher resolution, dynamic range, and low light performance for regular photos. Hence, if selfies are a priority, the S21+ may be more appealing despite the S24's overall advancements in photography due to software and hardware improvements.
Video Quality
6.6
7.9
The Samsung Galaxy S24 takes good videos, while the Samsung Galaxy S21+ takes only fair videos.
The Samsung Galaxy S21+ offers superior video capture over the Galaxy S24, attributed to the S21+'s higher Video Resolution/framerate score and Video Software experience, which contribute to better video recording output. Meanwhile, the Galaxy S24, despite having better Mic quality, does not match the Galaxy S21+'s video capabilities likely due to weaker Video Stabilization and Video Dynamic range as noted in comparative assessments.
Screen Size
The Samsung Galaxy S21+ has a screen size of 6.7 inches and the Samsung Galaxy S24 is 6.2 inches.
Cost
$340
$800
$0
$200
$400
$600
$800
$1,000
$1,200
The Samsung Galaxy S21+ has a price of $340 and the Samsung Galaxy S24 costs $800.
Let Us Help Find Your Perfect Phone
Find your new phone
Key similarities
Battery
8.0 Hours
8.0 Hours
The Samsung Galaxy S21+ has 8 hours of battery life. The Samsung Galaxy S24 has 8 hours of battery life.
Give feedback
We’re constantly working to improve.
How the Samsung Galaxy S21+ and the Samsung Galaxy S24 compare to other phones
Spec Comparison
 |  | |
| Samsung Galaxy S21+ | Samsung Galaxy S24 |
GENERAL | |||
|---|---|---|---|
| Price | |||
$340 | $800 | ||
Brand | |||
Brand | Samsung | Samsung | |
Operating System | |||
Operating System | Android | Android | |
Release Date | |||
Release Date | January 29, 2021 | January 24, 2024 | |
SCREEN | |||
|---|---|---|---|
Screen Size | |||
Screen Size | 6.7" | 6.2" | |
Resolution | |||
Resolution | 2400 x 1080 | 2340 x 1080 | |
Variable refresh rate | |||
Variable refresh rate | No | Yes | |
Pixels Per Inch | |||
Pixels Per Inch | 394 | 416 | |
Display Type | |||
Display Type | OLED | OLED | |
INTERNAL | |||
|---|---|---|---|
Processor | |||
Processor | SD888 | SD8G3 | |
Internal Storage | |||
Internal Storage | 128 GB | 128 GB | |
RAM | |||
RAM | 8 GB | 8 GB | |
CAMERA | |||
|---|---|---|---|
Overall Camera Quality Score | |||
Overall Camera Quality Score | 7.2/10 | 8.5/10 | |
Photos Score | |||
Photos Score | 7/10 | 8.5/10 | |
Videos Score | |||
Videos Score | 6.6/10 | 7.9/10 | |
Rear Cameras | |||
Rear Cameras | Main, Ultrawide, Telephoto | Main, Ultrawide, Telephoto | |
Main Camera | |||
Main Camera | 12 megapixels + OIS | 50 megapixels + OIS | |
BATTERY | |||
|---|---|---|---|
Battery Life | |||
Battery Life | 8 Hours | 8 Hours | |
Battery Capacity | |||
Battery Capacity | 4800 mAh | 4000 mAh | |
Wireless Charging | |||
Wireless Charging | Yes | Yes | |
Wireless charging Speed | |||
Wireless charging Speed | 15 W | 15 W | |
Reverse wireless charging | |||
Reverse wireless charging | Yes (4.5 watts) | Yes (4.5 watts) | |
PHYSICAL | |||
|---|---|---|---|
Size | |||
Size | 6.36" x 2.98" | 5.79" x 2.78" | |
Weight | |||
Weight | 7.05 oz | 5.89 oz | |
Back Material | |||
Back Material | Glass | Glass | |
Stereo Speakers | |||
Stereo Speakers | No | No | |
CONNECTIVITY | |||
|---|---|---|---|
Dual SIM | |||
Dual SIM | Yes | Yes | |
Bluetooth Version | |||
Bluetooth Version | 5.0 | 5.3 | |
A2DP | |||
A2DP | Yes | Yes | |
WiFi Version | |||
WiFi Version | 6 | 6e | |
NFC | |||
NFC | Yes | Yes | |
US 5G Bands | |||
US 5G Bands | (SA/NSA/Sub6/mmWave)2, 5, 25, 41, 66, 71, 260, 261 (SA/NSA/Sub6)1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 77, 78 | (SA/NSA/Sub6/mmWave)1, 7, 25, 28, 41, 66, 71, 78, 258, 260, 276 | |
OTHER FEATURES | |||
|---|---|---|---|
Biometric unlock | |||
Biometric unlock | Face unlock, Fingerprint sensor: Under Display | Face unlock, Fingerprint sensor: Under Display | |
Unlockable Bootloader | |||
Unlockable Bootloader | No | No | |
Color | |||
Color | Phantom Black, Phantom Silver, Phantom Violet, Phantom Pink, Phantom Gold, Phantom Red | Sandstone Orange, Onyx Black, Marble Gray, Cobalt Violet, Amber Yellow, Jade Green, Sapphire Blue | |
Stock Android | |||
Stock Android | No | No | |
SD Card | |||
SD Card | No | No | |
Shopping
Samsung Galaxy S21+
See more
Dig into reviews and images
Tom's Guide
Jordan Palmer | May 2022
"All told, Samsung nailed it with the Galaxy S21 Plus. It has most of the strengths of the smaller S21 in a bigger package. It’s got a lot going for it. If you’re coming from an older device, like the Galaxy S10 series, this is a solid upgrade."
Get a great deal on the Samsung Galaxy S21+ or the Samsung Galaxy S24
About Samsung
Samsung is one of the most recognizable names in the smartphone industry, standing as the undisputed best-selling brand of Android smartphones in the United States for many years now. Samsung is known for offering a variety of smartphones in all available price points, as well as for implementing cutting-edge technology and innovative features in their flagship devices, ones that often shape the market going forward. The company offers its own unique spin on Android, called One UI, which focuses on offering a multitude of features and is heavily customizable, according to user preference.
Give feedback
We're constantly perfecting our model
Phone guides you might be interested in
More comparisons for you
Compare Samsung Galaxy S21+ vs. Samsung Galaxy A23
VS
Compare Samsung Galaxy S21+ vs. Samsung Galaxy A42
VS
Compare Samsung Galaxy S21+ vs. Google Pixel 6 Pro
VS
Compare Samsung Galaxy S24 vs. OnePlus 12
VS
Compare Samsung Galaxy S24 vs. Motorola Motorola Edge+ (2023)
VS
Compare Samsung Galaxy S24 vs. Google Pixel 8
VS
FAQs
FAQs about phones
Why trust us
This information was produced and vetted by the PerfectRec phones team. We are a product research and recommendation organization that meticulously reviews and evaluates the latest phone information and makes it digestible for you.
By the numbers
68
Phones evaluated
7,820
Phones stats compiled
8
Proprietary Phones ratings developed
151,800
Recommendations made
86,020
Consumer hours saved
About the phone team
Joe Golden, Ph.D
CEO and Phones Editor
Joe is an entrepreneur and lifelong electronics enthusiast with a Ph.D in Economics from the University of Michigan.
Jason Lew
Staff Expert & Software Engineer
Jason is a staff expert and software engineer that has been making laptop recommendations for 7 years and moderates one of the largest laptop subreddits.
Chandradeep Chowdhury
Staff Expert & Software Engineer
Chandradeep is a staff expert and software engineer and expert in televisions and monitors. He’s been making monitor recommendations for ten years.
Seth Peoples
Phones Expert
Seth is a US-based product expert focusing on smartphones and he is a moderator of one of the largest smartphone subreddits. His tailored recommendations have helped him earn over 87k comment karma, putting him in the top 1% of Redditors.
Efthimis Kotanidis
Phones Expert
Efthimis is a Greece-based product expert focusing on smartphones. He has been recommending phones for 4 years and his recommendations on Reddit have earned him over 35k karma.
Featured in
