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Galaxy A25
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Galaxy S21 Ultra
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What we think

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The PerfectRec phone team Learn more
Updated February 23, 2024·

If you prioritize camera quality and are willing to pay more, the Samsung Galaxy S21 Ultra has a better overall camera experience, with high-quality photos and videos, versatility, and features like a telephoto lens with significant optical zoom. On the other hand, if you want to spend less and are okay with basic photography, the Samsung Galaxy A25 offers a less impressive camera setup suitable for casual use. The S21 Ultra also offers a larger, higher resolution screen, more advanced processor, and longer battery life, making it a better choice for heavy usage, gaming, and media consumption. However, the A25 still provides good quality with its OLED screen and decent performance for everyday tasks at a more budget-friendly price. Both phones have the same storage capacity and the Android operating system. 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 A25
  • The Samsung Galaxy A25 has no clear advantages over the Samsung Galaxy S21 Ultra.
Advantages of the Samsung Galaxy S21 Ultra
  • Good for taking photos
  • Good for recording videos
  • Very good display quality
  • Good performance

Key differences

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Overall Camera Quality

Galaxy A25
Galaxy S21 Ultra
7.8
The Samsung Galaxy A25 has poor overall camera quality, while the Samsung Galaxy S21 Ultra has good overall camera quality.

Photo Quality

Galaxy A25
Galaxy S21 Ultra
7.8
The Samsung Galaxy A25 takes poor photos, while the Samsung Galaxy S21 Ultra takes good photos.

Video Quality

Galaxy A25
Galaxy S21 Ultra
7.1
The Samsung Galaxy A25 takes poor videos, while the Samsung Galaxy S21 Ultra takes good videos.

Battery

8.7 Hours
Galaxy A25
Galaxy S21 Ultra
6.7 Hours
The Samsung Galaxy A25 has 8.7 hours of battery life. The Samsung Galaxy S21 Ultra has 6.7 hours of battery life.

Cost

$300
Galaxy A25
Galaxy S21 Ultra
$423
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Product image

$100

$200

$300

$400

$500

$600

$700

The Samsung Galaxy A25 has a price of $300 and the Samsung Galaxy S21 Ultra costs $423.
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Key similarities

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Screen Size

The Samsung Galaxy A25 has a screen size of 6.5 inches and the Samsung Galaxy S21 Ultra is 6.8 inches.

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How the Samsung Galaxy A25 and the Samsung Galaxy S21 Ultra compare to other phones

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Spec Comparison

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Samsung Galaxy A25Samsung Galaxy S21 Ultra
Samsung Galaxy A25Samsung Galaxy S21 Ultra

GENERAL

Price
$300
$423
Brand
SamsungSamsung
Operating System
AndroidAndroid
Release Date
January 1, 2024January 29, 2021

SCREEN

Screen Size
6.5"6.8"
Resolution
2340 x 10803200 x 1440
Variable refresh rate
NoYes
Pixels Per Inch
396515
Display Type
OLEDOLED

INTERNAL

Processor
D6100+SD888
Internal Storage
128 GB128 GB
RAM
6 GB12 GB

CAMERA

Overall Camera Quality Score
7.9/10
Photos Score
7.8/10
Videos Score
7.1/10
Rear Cameras
Main, Ultrawide, MacroMain, Ultrawide, Telephoto, Super Telephoto
Main Camera
50 megapixels + OIS108 megapixels + OIS

BATTERY

Battery Life
8.7 Hours6.7 Hours
Battery Capacity
5000 mAh5000 mAh
Wireless Charging
YesYes
Wireless charging Speed
15 W15 W
Reverse wireless charging
Yes (4.5 watts)Yes (4.5 watts)

PHYSICAL

Size
6.34" x 3.01"6.5" x 2.98"
Weight
6.95 oz8.01 oz
Back Material
PlasticGlass
Stereo Speakers
NoNo

CONNECTIVITY

Dual SIM
YesYes
Bluetooth Version
5.35.2
A2DP
YesYes
WiFi Version
56e
NFC
YesYes
US 5G Bands
(SA/NSA/Sub6)1, 3, 5, 7, 8, 26, 28, 40, 41, 66, 77, 78(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

OTHER FEATURES

Biometric unlock
Face unlock, Fingerprint sensor: SideFace unlock, Fingerprint sensor: Under Display
Unlockable Bootloader
NoNo
Color
Blue BlackPhantom Black, Phantom Silver, Phantom Navy, Phantom Titanium
Stock Android
NoNo
SD Card
NoNo

Shopping

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Samsung Galaxy S21 Ultra

See more

Dig into reviews and images

Android Authority

David Imel | January 2023
"The Galaxy S21 Ultra is a killer combo of great design, blazing-fast performance, a wonderful display, long-lasting battery life, and one of the most versatile camera systems you can get in a smartphone today."

Get a great deal on the Samsung Galaxy A25 or the Samsung Galaxy S21 Ultra

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.

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Why trust us

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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
89,400
Recommendations made
50,660
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.

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