Samsung Galaxy S21 FE 5G vs Asus Zenfone 9 - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date January 7, 2022 September 15, 2022
Release Year 2022 2022

Physical

Volume 91.64 cm³ 90.79 cm³
Screen Size to Weight Ratio 3.62 "/g 3.49 "/g
Weight 177 g 169 g
Height 155.7 mm 146.5 mm
Width 74.5 mm 68.1 mm
Thickness 7.9 mm 9.1 mm
Foldable Design No No
Available Colors
  • White
  • Graphite
  • Lavender
  • Olive
  • Midnight Black
  • Starry Blue
  • Moonlight White
  • Sunset Red

Display

Screen Size 6.4 " 5.9 "
Resolution 1080 x 2340 1080 x 2400
Aspect Ratio 19.5:9 20:9
Screen-to-Body Ratio 86.7 % 84.2 %
Pixel Density 403 PPI 445 PPI
Refresh Rate 120 Hz 120 Hz
Typical Brightness N/A N/A
HBM Brightness N/A N/A
Peak Brightness N/A 1100 nits

Hardware

Battery Capacity per Screen Area 109.86 mAh/in² 123.53 mAh/in²
Battery Density 49.11 mAh/cm³ 47.36 mAh/cm³
Battery Capacity 4500 mAh 4300 mAh
NFC Support Yes Yes
Chipset Qualcomm SM8350 Snapdragon 888 5G (5 nm) - Version 1 Qualcomm SM8475 Snapdragon 8+ Gen 1 (4 nm)
CPU Octa-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55) - Version 1 Octa-core (1x3.19 GHz Cortex-X2 & 3x2.75 GHz Cortex-A710 & 4x1.80 GHz Cortex-A510)
GPU Adreno 660 - Version 1 Adreno 730

Connectivity

USB Version N/A N/A
OTG Support 1 1
DisplayPort
DisplayPort Version N/A N/A
USB Features USB Type-C, OTG USB Type-C, OTG

Software

Operating System Android Android
Initial OS Version 12 12
Maximum OS Version 16 14

Comparison Summary

Okay, let's break down the Samsung Galaxy S21 FE 5G and the Asus Zenfone 9, putting the spotlight on what these specs actually mean for you, the user.

1. Specifications Breakdown

Here's a detailed comparison table that goes beyond the numbers to explain the real-world implications of each specification:

FeatureSamsung Galaxy S21 FE 5GAsus Zenfone 9Real-World Implications
Design
Dimensions155.7 x 74.5 x 7.9 mm146.5 x 68.1 x 9.1 mmThe S21 FE is noticeably larger, while the Zenfone 9 is more compact and pocketable.
Weight177g169gZenfone 9 is slightly lighter; both are comfortable for extended use, with the Zenfone 9 feeling a bit more pocket-friendly.
Display
Size6.4"5.9"The S21 FE offers more screen real estate, better for media consumption, while the Zenfone 9 is ideal for one-handed use.
Resolution1080x23401080x2400Both provide sharp, crisp visuals; difference in pixels is negligible.
Pixel Density403 ppi445 ppiZenfone 9's higher pixel density makes text and images appear slightly sharper.
TechnologyAMOLEDAMOLEDBoth offer vibrant colors and deep blacks; excellent for viewing content.
Refresh Rate120Hz120HzBoth deliver smooth scrolling and animations.
Brightness1300 nits1100 nitsS21 FE is brighter in direct sunlight, improving outdoor visibility.
Performance
ChipsetSnapdragon 888 (5 nm)Snapdragon 8+ Gen 1 (4 nm)Zenfone 9’s newer chipset offers better performance and power efficiency.
AnTuTu Score923,8361,232,500Zenfone 9 demonstrates significantly better performance, meaning snappier app loading and smoother overall use.
GPUAdreno 660Adreno 730Zenfone 9's GPU will handle graphically intense tasks and games more fluidly.
Battery Life
Capacity4500mAh4300mAhS21 FE has a slightly larger battery, but real-world battery life may vary depending on usage.
Charging25W Fast Charging30W Fast ChargingZenfone 9 charges slightly faster.
Features15W Wireless, Reverse WirelessNoneS21 FE offers greater versatility in charging with wireless options, but lacks a charger in the box.
Camera
Main Camera12MP f/1.8 (Sony IMX555)50MP f/1.8 (Sony IMX766)Zenfone 9's main sensor captures more detail and generally better low-light performance due to the larger sensor.
Telephoto8MP f/2.0 (Hynix HI-847)NoneS21 FE has an optical zoom lens which is ideal for portraits.
Selfie Camera32MP f/2.2 (Sony IMX616)12MP f/2.45 (Sony IMX663)S21 FE takes higher-resolution selfies.
Wide Angle13MP f/2.2 (Sony IMX258)12MP f/2.2 (Sony IMX363)Zenfone 9 has a larger sensor for wide angle shots, better in low-light.
Video4K@60fps8K@24fps, 4K@120fpsZenfone 9 records higher resolution videos and 4K@120, potentially offering a greater range of creative options.
DXOMARKMain: 117, Selfie: 127Not TestedS21 FE scores well, but no comparison to Zenfone 9, lacking testing data
FeaturesTriple Cam, OIS, Optical zoomDual Cam, Gimbal, OISS21 FE has a versatile telephoto lens, but the Zenfone 9 offers advanced image stabilization and the benefits of 8k Video recording.
Software
Operating SystemAndroid 12 with up to 16Android 12 with up to 14S21 FE likely to receive software updates longer.
Connectivity
Wi-Fi802.11a/b/g/n/ac/ax, Dual-band, Hotspot, Direct, Display, MIMO802.11a/b/g/n/ac/ax, Dual-band, Hotspot, Direct, Display, MIMOBoth phones offer similar Wi-Fi standards.
Bluetooth5.0 LE, A2DP, LE, HFP, HID, HSP5.2 LE, AVRCP, HID, LEZenfone 9 has a newer Bluetooth version.
GPSGPS, A-GPS, GLONASS, Beidou, GalileoGPS, A-GPS, GLONASS, Beidou, QZSS, Galileo, GPS (L1+L5), GLONASS (L1), BeiDou (B1), Galileo (E1+E5a), BeiDou (B2), NavIC System, QZSS (L1 + L5)Zenfone 9 supports more satellite systems for better accuracy.
Storage
Internal128GB or 256GB128GB or 256GBBoth phones offer the same maximum storage.
RAM6GB or 8GB8GB or 16GBThe Zenfone 9 can be optioned with double the RAM which will improve performance.
ExpandableNoNoNeither phone has expandable storage.
Audio
QualityDolby Atmos, Stereo speakers, Noise cancellation microphoneHi-Res Audio, Stereo speakers, Noise cancellation microphone, 3 microphonesZenfone 9 features high quality audio, with 3 microphones for recording.
Security
FingerprintBasic sensorSide mounted sensorZenfone 9 offers a side mounted fingerprint reader.
Build Quality
Screen ProtectionCorning Gorilla Glass VictusCorning Gorilla Glass VictusBoth phones have similar protection.
Sensors
SensorsFingerprint, Proximity, Accelerometer, Compass, Gyroscope, BarometerFingerprint, Proximity, Accelerometer, Compass, GyroscopeS21 FE has an additional Barometer.

2. Key Insights

Samsung Galaxy S21 FE 5G Strengths:

  • Larger Display: The 6.4" screen is excellent for media consumption and multitasking.
  • Brighter Display: With 1300 nits, it's easier to see in bright sunlight.
  • Versatile Camera System A telephoto lens that provides true optical zoom.
  • Wireless Charging: Offers both wireless charging and reverse wireless charging, adding convenience.
  • Software Support Should see a longer life cycle of software support.

Asus Zenfone 9 Strengths:

  • Compact Design: The 5.9" form factor is perfect for one-handed use and portability.
  • Superior Performance: The Snapdragon 8+ Gen 1 chipset delivers significantly better performance and power efficiency.
  • Advanced Main Camera: The Sony IMX766 sensor and gimbal stabilizer in the main camera excel in low light.
  • 8k Video Recording Allows the user to record professional grade video footage.
  • Faster Charging: 30W charging is quicker, especially if you're in a hurry.
  • Up to 16 GB of RAM: Allows for extreme multi-tasking and gaming.
  • Better Audio Hi-Res Audio playback and 3 microphones for improved audio.
  • Better GPS: More satellite system support for more accurate navigation

Trade-offs and Limitations:

  • S21 FE: While the camera system is versatile, its performance doesn’t match the Zenfone 9's main sensor. Also, the device is bigger and heavier which may not be ideal for people with smaller hands.
  • Zenfone 9: The smaller screen may not appeal to everyone, and it lacks wireless charging. Has a shorter software update life.

3. User Profiles and Recommendations

  • Samsung Galaxy S21 FE 5G:
    • Best For: Media enthusiasts, multitaskers, and users who prefer a larger display and the convenience of wireless charging.
    • Use Cases: Watching videos, gaming, browsing social media, and anyone who likes having a large, bright display. Also good for those who need a zoom lens.
  • Asus Zenfone 9:
    • Best For: Power users, gamers, and anyone who values portability and top-tier performance.
    • Use Cases: Mobile photography and videography, demanding gaming, and anyone who needs a compact device with high processing power.

4. Buying Decision Framework

Here are three questions to help you decide:

  1. Do you prioritize portability and one-handed use, or a larger display for media consumption? If you favor the former, the Zenfone 9 is your go-to; for the latter, the S21 FE wins.

  2. Do you need the best possible performance and image stabilization, or the flexibility of wireless charging and a telephoto lens? If performance and main camera quality are key, choose the Zenfone 9. If you need wireless charging and zoom, the S21 FE is the better option.

  3. How important is software support? The S21 FE should see a longer life of software updates, while the Zenfone 9 may end sooner.

Scenario-Based Recommendations:

  • Travel Photographer/Videographer: Asus Zenfone 9 for superior image stabilization, 8K recording, and a compact form factor, with the trade-off of not having an optical zoom lens.
  • Casual Gamer and Media Consumer: Samsung Galaxy S21 FE 5G with a larger, bright screen and versatile camera system, with the trade-off of slightly less performance.
  • Power User on the Go: Asus Zenfone 9 for its top-tier performance and one handed operation, trading off the wireless charging.
  • User on a Budget The S21 FE is often offered at a better price than the Zenfone 9, and is often found on sale which would make it better for a budget conscious user.

My Choice

If I had to choose, I'd go with the Asus Zenfone 9. I value the cutting-edge chipset, compact design, and main camera performance, especially the 8K recording and gimbal image stabilization. The 16GB of RAM and better audio is also a huge plus. Although I like having the benefits of wireless charging, I rarely use them, and am willing to trade that off for superior speed and performance, plus the portability and pocketability of the Zenfone 9.

The Samsung S21 FE is a solid option for those who value a larger screen and wireless charging but the extra power and performance of the Zenfone 9 make it a better choice.

Alex Griffin
Alex Griffin

Technology analyst specializing in mobile devices and consumer electronics.

Core Expertise

  • Mobile technology analysis
  • Consumer electronics evaluation
  • Technical specification interpretation
  • User experience insights

Professional Mission Empowering readers to make informed technology decisions by transforming intricate specifications into understandable, practical guidance.

Demystifying technology, one device at a time.