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Zenfone 9
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Galaxy S21 FE
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What we think

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The PerfectRec phone team Learn more
Updated January 10, 2024·

If you prioritize a more compact phone with a slightly better battery life, the Asus Zenfone 9 would be a good choice, even though it may cost a bit more. However, if a larger screen and more advanced video capabilities are important to you, and you want to save some money, then the Samsung Galaxy S21 FE would make sense. Both phones offer similar screen quality and performance, have plastic backs, and operate on the Android system. Keep in mind, the Zenfone 9 has no wireless charging capabilities unlike the S21 FE which does, and it also lacks a 3.5mm headphone jack which the Zenfone 9 includes. 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 Asus Zenfone 9
  • Good battery life
Advantages of the Samsung Galaxy S21 FE
  • The Samsung Galaxy S21 FE has no clear advantages over the Asus Zenfone 9.

Key differences

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Overall Camera Quality

6.2
Zenfone 9
Galaxy S21 FE
7.0
The Samsung Galaxy S21 FE has good overall camera quality, while the Asus Zenfone 9 has only fair overall camera quality.

Photo Quality

6.0
Zenfone 9
Galaxy S21 FE
6.9
The Samsung Galaxy S21 FE and Asus Zenfone 9 both have only fair photos, though the Samsung Galaxy S21 FE takes somewhat better photos.

Video Quality

6.4
Zenfone 9
Galaxy S21 FE
5.9
The Asus Zenfone 9 takes only fair videos, while the Samsung Galaxy S21 FE takes poor videos.

Battery

7.8 Hours
Zenfone 9
Galaxy S21 FE
6.7 Hours
The Asus Zenfone 9 has 7.8 hours of battery life. The Samsung Galaxy S21 FE has 6.7 hours of battery life.

Screen Size

The Asus Zenfone 9 has a screen size of 5.9 inches and the Samsung Galaxy S21 FE is 6.4 inches.

Cost

$700
Zenfone 9
Galaxy S21 FE
$600
Product image
Product image

$200

$400

$600

$800

$1,000

$1,200

The Asus Zenfone 9 has a price of $700 and the Samsung Galaxy S21 FE costs $600.
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How the Asus Zenfone 9 and the Samsung Galaxy S21 FE compare to other phones

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Spec Comparison

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Asus Zenfone 9Samsung Galaxy S21 FE
Asus Zenfone 9Samsung Galaxy S21 FE

GENERAL

Price
$700
$600
Brand
AsusSamsung
Operating System
AndroidAndroid
Release Date
September 15, 2022January 29, 2022

SCREEN

Screen Size
5.9"6.4"
Resolution
2400 x 10802400 x 1080
Variable refresh rate
NoNo
Pixels Per Inch
445401
Display Type
OLEDOLED

INTERNAL

Processor
SD8+G1SD888
Internal Storage
128 GB128 GB
RAM
6 GB6 GB

CAMERA

Overall Camera Quality Score
6.3/107.1/10
Photos Score
6/106.9/10
Videos Score
6.5/105.9/10
Rear Cameras
Main, UltrawideMain, Ultrawide, Telephoto
Main Camera
50 megapixels + OIS12 megapixels + OIS

BATTERY

Battery Life
7.8 Hours6.7 Hours
Battery Capacity
4300 mAh4500 mAh
Wireless Charging
NoYes
Wireless charging Speed
0 W15 W
Reverse wireless charging
NoYes (4.5 watts)

PHYSICAL

Size
5.77" x 2.68"6.13" x 2.93"
Weight
5.96 oz6.24 oz
Back Material
PlasticPlastic
Stereo Speakers
NoNo

CONNECTIVITY

Dual SIM
YesYes
Bluetooth Version
5.25.0
A2DP
YesYes
WiFi Version
6e6
NFC
YesYes
US 5G Bands
(SA/NSA/Sub6)1, 2, 3, 5, 7, 8, 12, 20, 25, 28, 29, 30, 38, 40, 41, 48, 66, 71, 77, 78, 89(SA/NSA/Sub6/mmWave)41, 66, 71, 260, 261

OTHER FEATURES

Biometric unlock
Fingerprint sensor: SideFace unlock, Fingerprint sensor: Under Display
Unlockable Bootloader
NoNo
Color
Sunset Red, Starry BlueGraphite, Lavender, Olive, White, Navy Blue
Stock Android
YesNo
SD Card
NoNo

Shopping

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Asus Zenfone 9

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Dig into reviews and images

Android Authority

Robert Triggs | March 2023
"The Asus Zenfone 9 is a compact device that still packs more than enough power under the hood. It's compact size, Bluetooth and audio features (including a headphone jack!), and hardware gestures combine to offer a package that does enough differently to warrant your attention."

Samsung Galaxy S21 FE

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Dig into reviews and images

Tom's Guide

Philip Michaels | March 2022
"The Galaxy S21 FE is a fine addition to Samsung's S21 lineup, retaining the very best features of those flagship phones for a more modest price. This is a solid phone, matching the performance of the top Android flagships from a year ago and delivering photos that hold their own against some of the best camera phones we've tested."

Get a great deal on the Asus Zenfone 9 or the Samsung Galaxy S21 FE

About ASUS

Asus is a well-known player in the mobile world, and in the past few years it has been known for covering specific niches in the smartphone market. Their Zenfone line of devices appeal to small phone enthusiasts, by providing very well-rounded and capable phones at a package that is not too large to operate with one hand – something hard to find in modern Android smartphones. Conversely, their ROG line of devices cater to mobile gamers, by providing a slew of hardware and software features, specifically tailored to enhance the mobile gaming experience. Additionally, Asus is one of the only manufacturers left that continues to include headphone jacks in their lineup of phones, a feature that has become exceedingly rare in today's market.

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
98,100
Recommendations made
55,590
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

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