Samsung Galaxy S21 Ultra 5G vs Asus ROG Phone 6 - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date January 29, 2021 July 13, 2022
Release Year 2021 2022

Physical

Volume 111.09 cm³ 137.21 cm³
Screen Size to Weight Ratio 3 "/g 2.84 "/g
Weight 227 g 239 g
Height 165.1 mm 173 mm
Width 75.6 mm 77 mm
Thickness 8.9 mm 10.3 mm
Foldable Design No No
Available Colors
  • Phantom Black
  • Phantom Silver
  • Phantom Titanium
  • Phantom Navy
  • Phantom Brown
  • Navy
  • Phantom Black
  • Storm White

Display

Screen Size 6.8 " 6.78 "
Resolution 1440 x 3200 1080 x 2448
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 89.4 % 82.2 %
Pixel Density 515 PPI 395 PPI
Refresh Rate 120 Hz 165 Hz
Typical Brightness N/A 800 nits
HBM Brightness N/A N/A
Peak Brightness 1500 nits 1200 nits

Hardware

Battery Capacity per Screen Area 108.13 mAh/in² 130.52 mAh/in²
Battery Density 45.01 mAh/cm³ 43.73 mAh/cm³
Battery Capacity 5000 mAh 6000 mAh
NFC Support Yes Yes
Chipset Exynos 2100 (5 nm) - International Qualcomm SM8475 Snapdragon 8+ Gen 1 (4 nm)
CPU Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International Octa-core (1x3.19 GHz Cortex-X2 & 3x2.75 GHz Cortex-A710 & 4x1.80 GHz Cortex-A510)
GPU Mali-G78 MP14 - International Adreno 730

Connectivity

USB Version 3.2 3.1
OTG Support 1 1
DisplayPort
DisplayPort Version N/A N/A
USB Features USB Type-C 3.2, OTG USB Type-C 3.1, OTG, Accessory Connector

Software

Operating System Android Android
Initial OS Version 11 12
Maximum OS Version 15 13

Comparison Summary

1. Specifications Comparison

FeatureSamsung Galaxy S21 Ultra 5GAsus ROG Phone 6Practical Impact
Design
Launch Date2021-01-292022-07-13Asus is newer, potentially offering longer software support.
Dimensions165.1 × 75.6 × 8.9 mm173 × 77 × 10.3 mmAsus is larger and thicker, making it less pocketable. Samsung is more compact.
Weight227g239gSamsung is slightly lighter, potentially more comfortable for prolonged use.
Display
Size6.8"6.78"Negligible size difference; both offer a large viewing experience.
Resolution1440x32001080x2448Samsung has a noticeably sharper display, better for detailed content.
Pixel Density515 ppi395 ppiSamsung's display will look crisper and less pixelated than the Asus.
TechnologyAMOLEDAMOLEDBoth provide vibrant colors and deep blacks.
Refresh Rate120Hz165HzAsus offers smoother scrolling and animations, particularly noticeable in gaming.
Brightness1500 nits1200 nitsSamsung's display is significantly brighter, offering better outdoor visibility in bright sunlight.
Performance
ChipsetExynos 2100 (5 nm)Snapdragon 8+ Gen 1 (4 nm)Asus has a more powerful and efficient chipset, resulting in better performance.
AnTuTu Score749,0001,203,000Asus demonstrates superior performance in demanding tasks, like gaming and video editing.
GPUMali-G78 MP14Adreno 730Asus has a more powerful GPU for gaming.
Battery
Capacity5000mAh6000mAhAsus offers potentially longer battery life due to larger capacity.
Charging25W fast charging65W fast chargingAsus charges significantly faster, reducing downtime.
FeaturesWireless Charging 15W, Reverse Wireless 9W, No ChargerBypass Charging, Reverse Charging 10WSamsung offers wireless charging; Asus has "Bypass charging" which can be useful when gaming for a long time.
Camera
Standard Camera108MP, f/1.8, 1/1.33"50MP, f/1.9, 1/1.56"Samsung's primary sensor is higher resolution and larger, but real-world differences depend on processing.
Telephoto Camera10.8MP x2NoneSamsung offers significantly better zoom capability with dedicated telephoto lenses.
Wide Angle Lens12.2MP13MPBoth offer similar wide-angle image capture but in different camera setup
Macro LensNone5MPAsus offers a dedicated macro lens for close-up photography.
Selfie Camera44MP, f/2.2, 1/2.65"12MP, f/2.0, 1/2.93"Samsung boasts higher resolution; Asus has a slightly wider aperture for better low-light selfies.
VideoUp to 8K@24fps, Various modesUp to 8K@24fps, Various modesBoth have 8K video capability, but Asus has a better slow-motion and 4k@120fps video modes.
DxoMark ScoreMobile: 115, Selfie 135Not availableSamsung offers a benchmark on camera performance for mobile and selfie camera.
Software
OSAndroid 11, upgradeable to 15Android 12, upgradeable to 13Asus has a more recent Android version out of the box but will get fewer major upgrades.
Connectivity
Wi-FiWi-Fi 6Wi-Fi 6 (802.11ad)Both offer fast Wi-Fi, but the Asus has 802.11ad.
Bluetooth5.25.2Both offer similar modern Bluetooth, but Asus has LDAC and AAC.
GPSGPS, A-GPS, GLONASS, Beidou, Galileo, GPS (L1+L5), Galileo (E1+E5a)GPS, A-GPS, GLONASS, Beidou, QZSS, Galileo, GPS (L1+L5), BeiDou (B1), Galileo (E1+E5a), BeiDou (B2), NavIC System, QZSS (L1 + L5)Asus supports more satellite systems for better location accuracy.
SIMDual SIMDual SIMBoth support dual SIM functionality
Storage
Internal Storage128/256/512 GB128/256/512 GBBoth have similar storage options
RAM12/16 GB8/12/16 GBBoth offer ample RAM for multitasking, with Asus providing a 8GB variant.
Expandable StorageNoNoNeither phone supports SD cards for additional storage.
Audio
QualityDolby Atmos, Hi-Res Audio, Stereo SpeakersDTS/DTS:X, Hi-Res Audio, Stereo Speakers, 4 MicsAsus boasts a more advanced audio system for an immersive sound experience.
Security
FeaturesBasic FingerprintBasic FingerprintBoth offer basic fingerprint sensor.
Build Quality
ProtectionGorilla Glass VictusGorilla Glass VictusBoth offer premium screen protection.
Sensors
SensorsAccelerometer, Compass, Gyroscope, Proximity, BarometerAccelerometer, Compass, Gyroscope, ProximitySamsung has a barometer sensor.

2. Key Differences Analysis

Samsung Galaxy S21 Ultra 5G Advantages:

  • Sharper Display: Significantly higher resolution and pixel density provide a clearer, more detailed viewing experience, great for media consumption and content creation.
  • Brighter Screen: The 1500 nits brightness is notably better for outdoor use in bright sunlight, enhancing usability in various environments.
  • Versatile Camera System: Offers better zoom capabilities with dedicated telephoto lenses, as well as a great selfie camera. The inclusion of Laser AF for faster focusing is a plus. The benchmark for both mobile and selfie camera are also available.
  • Wireless Charging: Supports both wireless charging and reverse wireless charging which can be more convenient for some users.
  • More Software Updates: Promises up to Android 15, offering potentially longer software support and access to newer features.
  • Barometer: Includes a barometer sensor that can be helpful for atmospheric pressure readings.

Asus ROG Phone 6 Advantages:

  • Superior Performance: The Snapdragon 8+ Gen 1 chipset and higher AnTuTu score deliver significantly better performance for gaming, demanding apps, and overall responsiveness.
  • Smoother Display: The 165Hz refresh rate makes scrolling and animations noticeably smoother, enhancing the user experience.
  • Larger Battery: The 6000mAh battery offers potentially longer battery life for extended usage, ideal for gamers and heavy users.
  • Faster Charging: 65W charging is much faster than Samsung's 25W, reducing charging time.
  • Advanced Audio: DTS/DTS:X support, 4 microphones for a better audio experience.
  • Dedicated Macro Lens: Has a dedicated macro camera for close-up shots.
  • More satellite systems: Offers more accurate GPS capabilities for navigation.

Significant Trade-offs:

  • Samsung: The older chipset means it will be slower and less efficient, and will heat up more compared to the Asus. The charging speed is slow compared to the Asus.
  • Asus: Larger and bulkier size with a lower resolution screen might not be ideal for some users, specially the ones who are after a good camera experience. Will have fewer software updates.

3. User Profiles & Recommendations

Samsung Galaxy S21 Ultra 5G:

  • Ideal Users:
    • Users who prioritize a premium display with high resolution and brightness for media consumption.
    • Photography enthusiasts who value versatile zoom capabilities and overall camera performance.
    • Users who want a more compact and pocketable phone.
    • Users who prioritize wireless charging and software updates.
  • Use Cases:
    • Content creation and editing, where the display's accuracy and resolution are important.
    • Outdoor use under bright sunlight, where high brightness is essential.
    • Photography and videography with its versatile zoom capabilities and features.
    • Everyday use with a focus on a balance of features.

Asus ROG Phone 6:

  • Ideal Users:
    • Mobile gamers who demand top-tier performance and a smooth, responsive display.
    • Power users who need long battery life and fast charging for extended use.
    • Users who appreciate high-quality audio and want an immersive experience.
    • Users who prioritize a smooth and responsive experience above all.
  • Use Cases:
    • Mobile gaming and demanding applications.
    • Extended use scenarios where battery life and quick charging are crucial.
    • Immersive media consumption and gaming with the enhanced audio features.
    • For those who want the best in performance without caring about the bulkiness.

Price-to-Value:

  • Considering that the Samsung Galaxy S21 Ultra 5G is an older device, it might offer a better price-to-value ratio if found at a lower price point than the Asus ROG Phone 6. However, if performance is top priority, the Asus might provide better value for money.

4. Decision Framework

Key Questions to Consider:

  1. What do you prioritize the most: display quality or performance?
    • If a top-tier display is a must, the Samsung is preferable.
    • If maximum performance is essential, especially for gaming, the Asus is the better choice.
  2. How important is battery life, charging speed, and software update to you?
    • If battery life and fast charging are crucial, the Asus is superior.
    • If you prioritize longer software support, then the Samsung is preferable.
  3. What is the primary use case for the phone?
    • If you mainly use your phone for media consumption, daily use, and photography, the Samsung might be the better pick.
    • If your primary use case is gaming, power-intensive tasks, and audio quality, then the Asus is the better choice.

Scenario-Based Recommendations:

  • Scenario 1: Professional User who uses phone for work: The Samsung is recommended as the sharp display will be a plus for checking documents and emails and the versatile camera might be useful for some projects. The wireless charging might also be a useful feature.
  • Scenario 2: A gamer and heavy user: The Asus is recommended for a better gaming experience with smoother display and better processor. The bigger battery capacity and fast charging speed is another plus.
  • Scenario 3: Budget Conscious user: If the Samsung is offered at a lower price than the Asus, the Samsung will be a better buy, as it still delivers a decent user experience.

What I would choose and why!

If I were choosing between these two phones, I would pick the Asus ROG Phone 6. While the Samsung has a great screen and a more versatile camera setup, the Asus offers a superior performance boost with its Snapdragon 8+ Gen 1 chipset. This is particularly important to me as I use my phone for gaming, and multitasking. The larger battery, faster charging and smoother display are also big pluses for the Asus. The bulkiness is something I can live with for the performance. While the Samsung has a slightly better camera system and promises a better software update experience, the Asus’s gaming capabilities outweigh those advantages for me.

Emily Harper
Emily Harper

Technology Insights Specialist

Dedicated technology writer specializing in mobile device analysis and technology communication. Expert at translating complex smartphone features into clear, actionable insights for diverse audiences.

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  • Mobile technology analysis
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Bridging technical complexity with engaging, accessible narratives.