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 January 10, 2024·
If the camera is a priority, the Samsung Galaxy Note20 Ultra has a higher overall camera quality with more megapixels in its main camera, which may result in better photo and video captures. However, if battery life is essential, the Asus Zenfone 9 lasts longer on a single charge. For a larger screen and the added benefit of a stylus, the Samsung Galaxy Note20 Ultra is the better option as it has a considerably larger display and includes a stylus. On the other hand, the Asus Zenfone 9 is more compact and lighter, potentially making it easier to handle and carry. Both phones have a similar storage capacity, come with Android operating systems, and support 5G, but the Asus Zenfone 9 is generally more expensive. 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 Note20 Ultra
- Good for taking photos
- Poor for recording videos
- Very good display quality
- Good performance
Key differences
Overall Camera Quality
6.2
7.3
The Samsung Galaxy Note20 Ultra has good overall camera quality, while the Asus Zenfone 9 has only fair overall camera quality.
The Asus Zenfone 9 lags in several camera aspects, having poor scores in photo dynamic range, photo low light performance, and camera versatility, along with a fair selfie quality, whereas the Samsung Galaxy Note20 Ultra exhibits fair dynamic range, good low light performance and camera versatility, and good selfie quality. Furthermore, the Zenfone 9's overall photo software experience is very good, yet it is outshined by the Note20 Ultra's additional camera features like a 5x optical zoom telephoto lens and an integrated stylus that enhance the photography experience.
Photo Quality
6.0
7.3
The Samsung Galaxy Note20 Ultra takes good photos, while the Asus Zenfone 9 takes only fair photos.
The Asus Zenfone 9 takes poor selfies due to its inadequate selfie quality, while the Samsung Galaxy Note20 Ultra manages fair selfie results, making it a better choice if selfie performance is a priority. Despite the Zenfone's overall poor photo performance and the Note20 Ultra's fair rating, the difference in selfie quality is notable.
Video Quality
6.4
5.9
The Asus Zenfone 9 takes only fair videos, while the Samsung Galaxy Note20 Ultra takes poor videos.
The Asus Zenfone 9 is commended for its video stabilization and software experience, but it has limitations in dynamic range and low-light performance; its microphone quality is considered good. Meanwhile, the Samsung Galaxy Note20 Ultra also has fair video performance with strengths in stabilization and resolution/framerate, but faces similar challenges with dynamic range and low-light conditions, and its microphone quality is rated slightly lower.
Battery
7.8 Hours
6.4 Hours
The Asus Zenfone 9 has 7.8 hours of battery life. The Samsung Galaxy Note20 Ultra has 6.4 hours of battery life.
Screen Size
The Asus Zenfone 9 has a screen size of 5.9 inches and the Samsung Galaxy Note20 Ultra is 6.9 inches.
Cost
$700
$450
$200
$400
$600
$800
$1,000
$1,200
The Asus Zenfone 9 has a price of $700 and the Samsung Galaxy Note20 Ultra costs $450.
Let Us Help Find Your Perfect Phone
Find your new phone
Give feedback
We’re constantly working to improve.
How the Asus Zenfone 9 and the Samsung Galaxy Note20 Ultra compare to other phones
Spec Comparison
 |  | |
| Asus Zenfone 9 | Samsung Galaxy Note20 Ultra |
GENERAL | |||
|---|---|---|---|
| Price | |||
$700 | $450 | ||
Brand | |||
Brand | Asus | Samsung | |
Operating System | |||
Operating System | Android | Android | |
Release Date | |||
Release Date | September 15, 2022 | August 21, 2020 | |
SCREEN | |||
|---|---|---|---|
Screen Size | |||
Screen Size | 5.9" | 6.9" | |
Resolution | |||
Resolution | 2400 x 1080 | 3088 x 1440 | |
Variable refresh rate | |||
Variable refresh rate | No | Yes | |
Pixels Per Inch | |||
Pixels Per Inch | 445 | 496 | |
Display Type | |||
Display Type | OLED | OLED | |
INTERNAL | |||
|---|---|---|---|
Processor | |||
Processor | SD8+G1 | SD865+ | |
Internal Storage | |||
Internal Storage | 128 GB | 128 GB | |
RAM | |||
RAM | 6 GB | 8 GB | |
CAMERA | |||
|---|---|---|---|
Overall Camera Quality Score | |||
Overall Camera Quality Score | 6.3/10 | 7.4/10 | |
Photos Score | |||
Photos Score | 6/10 | 7.3/10 | |
Videos Score | |||
Videos Score | 6.5/10 | 6/10 | |
Rear Cameras | |||
Rear Cameras | Main, Ultrawide | Main, Ultrawide, Super Telephoto | |
Main Camera | |||
Main Camera | 50 megapixels + OIS | 108 megapixels + OIS | |
BATTERY | |||
|---|---|---|---|
Battery Life | |||
Battery Life | 7.8 Hours | 6.4 Hours | |
Battery Capacity | |||
Battery Capacity | 4300 mAh | 4500 mAh | |
Wireless Charging | |||
Wireless Charging | No | Yes | |
Wireless charging Speed | |||
Wireless charging Speed | 0 W | 15 W | |
Reverse wireless charging | |||
Reverse wireless charging | No | Yes (4.5 watts) | |
PHYSICAL | |||
|---|---|---|---|
Size | |||
Size | 5.77" x 2.68" | 6.49" x 3.04" | |
Weight | |||
Weight | 5.96 oz | 7.34 oz | |
Back Material | |||
Back Material | Plastic | Glass | |
Stereo Speakers | |||
Stereo Speakers | No | No | |
CONNECTIVITY | |||
|---|---|---|---|
Dual SIM | |||
Dual SIM | Yes | Yes | |
Bluetooth Version | |||
Bluetooth Version | 5.2 | 5.0 | |
A2DP | |||
A2DP | Yes | Yes | |
WiFi Version | |||
WiFi Version | 6e | 6 | |
NFC | |||
NFC | Yes | Yes | |
US 5G Bands | |||
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)2, 5, 41, 66, 71, 260, 261 (SA/NSA/Sub6)1, 3, 5, 7, 8, 28, 40, 77, 78 | |
OTHER FEATURES | |||
|---|---|---|---|
Biometric unlock | |||
Biometric unlock | Fingerprint sensor: Side | Face unlock, Fingerprint sensor: Under Display | |
Unlockable Bootloader | |||
Unlockable Bootloader | No | No | |
Color | |||
Color | Sunset Red, Starry Blue | Mystic Black, White, Mystic Bronze | |
Stock Android | |||
Stock Android | Yes | No | |
SD Card | |||
SD Card | No | Yes | |
Shopping
Asus Zenfone 9
See more
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 Note20 Ultra
See more
Dig into reviews and images
TechRadar
Matt Swider | July 2021
"The Note 20 Ultra has it all – almost: a big screen, superb camera, high refresh rate, the S Pen, in-screen fingerprint sensor, super-fast specs, 5G speeds, a fancy curved display. This phone is built for power users who want everything but the fastest charging speeds."
Get a great deal on the Asus Zenfone 9 or the Samsung Galaxy Note20 Ultra
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.
Give feedback
We're constantly perfecting our model
Phone guides you might be interested in
More comparisons for you
Compare Asus Zenfone 9 vs. Asus Zenfone 10
VS
Compare Asus Zenfone 9 vs. Samsung Galaxy S23
VS
Compare Asus Zenfone 9 vs. Google Pixel 7
VS
Compare Samsung Galaxy Note20 Ultra vs. Sony Xperia 5 III
VS
Compare Samsung Galaxy Note20 Ultra vs. Samsung Galaxy A54
VS
Compare Samsung Galaxy Note20 Ultra vs. Samsung Galaxy S22 Ultra
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
125,400
Recommendations made
71,060
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
