Motorola One 5G Ace vs Samsung Galaxy S21 5G - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date January 14, 2021 January 29, 2021
Release Year 2021 2021

Physical

Volume 125.14 cm³ 85.33 cm³
Screen Size to Weight Ratio 3.16 "/g 3.67 "/g
Weight 212 g 169 g
Height 166.1 mm 151.7 mm
Width 76.1 mm 71.2 mm
Thickness 9.9 mm 7.9 mm
Foldable Design No No
Available Colors
  • Frosted Silver
  • Volcanic Gray
  • Phantom White
  • Phantom Gray
  • Phantom Violet
  • Phantom Pink

Display

Screen Size 6.7 " 6.2 "
Resolution 1080 x 2400 1080 x 2400
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 85.7 % 85.9 %
Pixel Density 393 PPI 421 PPI
Refresh Rate N/A 120 Hz
Typical Brightness N/A N/A
HBM Brightness N/A N/A
Peak Brightness N/A 1300 nits

Hardware

Battery Capacity per Screen Area 111.38 mAh/in² 104.06 mAh/in²
Battery Density 39.96 mAh/cm³ 46.88 mAh/cm³
Battery Capacity 5000 mAh 4000 mAh
NFC Support Yes Yes
Chipset Qualcomm SM7225 Snapdragon 750G 5G (8 nm) Exynos 2100 (5 nm) - International
CPU Octa-core (2x2.2 GHz Kryo 570 & 6x1.8 GHz Kryo 570) Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International
GPU Adreno 619 Mali-G78 MP14 - International

Connectivity

USB Version 2.0 3.2
OTG Support 1
DisplayPort
DisplayPort Version N/A N/A
USB Features USB Type-C 2.0 USB Type-C 3.2, OTG

Software

Operating System Android Android
Initial OS Version 10 11
Maximum OS Version 15

Comparison Summary

1. Specifications Comparison

Here's a detailed comparison of the Motorola One 5G Ace and the Samsung Galaxy S21 5G, focusing on the practical implications of their specifications:

Design

FeatureMotorola One 5G AceSamsung Galaxy S21 5GPractical Impact
Dimensions166.1 × 76.1 × 9.9 mm151.7 × 71.2 × 7.9 mmThe Motorola is significantly larger and thicker, less pocketable. S21 is more ergonomic for one-handed use.
Weight212g169gThe S21 is considerably lighter, making it more comfortable to hold for extended periods.
BuildNot SpecifiedCorning Gorilla Glass Victus (Screen)S21 has a much stronger glass protecting against scratches and impacts, adding to durability.

Display

FeatureMotorola One 5G AceSamsung Galaxy S21 5GPractical Impact
Size6.7"6.2"Motorola offers a larger screen, better for media consumption, multitasking. S21 is more compact.
Resolution1080x24001080x2400Both provide a sharp image, resolution is the same.
PPI393421S21 has slightly sharper text and images due to higher pixel density.
TechnologyIPS LCDAMOLEDS21's AMOLED delivers superior blacks, contrast, and color accuracy, better for media, especially HDR content. Better in sunlight, battery efficiency.
Refresh Rate60Hz120HzS21 offers smoother scrolling, better gaming experience.
Brightness0 nits1300 nitsS21 is vastly superior in outdoor visibility due to a much brighter display.

Performance

FeatureMotorola One 5G AceSamsung Galaxy S21 5GPractical Impact
ChipsetSnapdragon 750G (8nm)Exynos 2100 (5nm)S21’s 5nm chipset provides substantially faster processing and better power efficiency.
AnTuTu Score330,000749,100S21 offers much faster app loading, smoother gaming, and better overall performance.
GPUAdreno 619Mali-G78 MP14S21’s GPU provides superior graphics performance for demanding tasks.

Camera

FeatureMotorola One 5G AceSamsung Galaxy S21 5GPractical Impact
Main Camera Resolution48MP, f/1.712MP, f/1.8Motorola offers higher resolution but sensor and pixel size details missing to fully compare.
Main Camera Pixel Size0.80 µm1.80 µmS21 has larger pixels, better low-light performance; Sensor size is also larger.
Telephoto CameraNone64MP, f/2.0S21 offers optical zoom capabilities for better image clarity at a distance.
Wide Angle8MP, f/2.212.2MP, f/2.2S21 is much more capable for wide angle photography with a much larger sensor.
Macro Lens2MP, f/2.4NoneMotorola has a dedicated macro lens for detailed close-up shots.
Selfie Camera16MP, f/2.210MP, f/2.2Motorola has higher resolution. Sensor details are missing on Motorola.
Video4K@30fps8K@24fps, 4K@60fps, 1080p@240fps, 720p@960fpsS21 is superior in video recording, offering 8K, higher framerates and slow-motion capabilities.
Video StabilizationEISHDR, EIS, OISS21 has a much superior stabilization, making videos more smooth.
DXOMark ScoresNot availableMobile: 111, Selfie: 132S21 is better, according to DXOMark benchmark.
FeaturesDigital Zoom, PDAF, LAF8K Video, Optical zoom, OIS, PDAF, Continuous AutofocusS21 has far more advanced camera features including optical zoom and stabilization.

Battery

FeatureMotorola One 5G AceSamsung Galaxy S21 5GPractical Impact
Capacity5000mAh4000mAhMotorola has a larger battery, potentially offering longer battery life.
Charging15W25WS21 charges faster, reducing downtime.
Features10W Charger in boxWireless, reverse Wireless charging, No charger in boxS21 offers superior wireless charging options, but you need to buy a separate charger.

Storage and RAM

FeatureMotorola One 5G AceSamsung Galaxy S21 5GPractical Impact
Internal Storage64GB/128GB128GB/256GBS21 offers more storage options, especially important without expandable storage.
RAM4GB/6GB8GBS21 has more RAM, improving multitasking and performance.
ExpandableNoNoNo expandable storage on either.

Connectivity

FeatureMotorola One 5G AceSamsung Galaxy S21 5GPractical Impact
WiFiWi-Fi acWi-Fi 6 (ax)S21 offers faster Wi-Fi speeds, better network performance.
Bluetooth5.15.0Motorola uses slightly newer Bluetooth.
GPSGPS, A-GPS, GLONASS, Galileo, SUPLGPS, A-GPS, GLONASS, Beidou, Galileo, GPS (L1+L5), Galileo (E1+E5a)S21 offers more accurate and reliable positioning due to a wider range of supported systems.
SIMSingle SIMDual SIM, Dual StandbyS21 is a better choice for users who need to use two SIM cards simultaneously.

Other

FeatureMotorola One 5G AceSamsung Galaxy S21 5GPractical Impact
Operating SystemAndroid 10Android 11, upgradable to 15S21 has a newer OS, and more future updates.
Audio2 MicrophonesDolby Atmos, Stereo SpeakersS21 has far better speakers and spatial audio.
SecurityRear FingerprintBasic FingerprintFunctionality is similar, though sensor type not specified on S21
SensorsAccelerometer, Compass, Gyroscope, ProximityAccelerometer, Compass, Gyroscope, Proximity, BarometerS21 has more advanced sensor array, including a barometer, expanding capabilities.

2. Key Differences Analysis

Motorola One 5G Ace Advantages

  • Larger Screen: The 6.7" display provides more screen real estate, which is beneficial for media consumption, gaming, and multitasking.
  • Bigger Battery: The 5000mAh battery offers potentially longer battery life.
  • Dedicated Macro Lens: Provides additional flexibility for close-up photography.
  • Included Charger: A charger is included in the box.

Samsung Galaxy S21 5G Advantages

  • Superior Display: AMOLED technology with 120Hz refresh rate and higher brightness offers superior visual experience, and better sunlight legibility.
  • Significantly Better Performance: The Exynos 2100 chipset and 8GB RAM delivers much better performance for all use cases including gaming, multitasking and app loading.
  • Better Camera System: Offers a much more versatile camera system with optical zoom, a better sensor, OIS, and superior video capabilities.
  • Faster Charging: 25W fast charging reduces charging times.
  • Wireless Charging: Includes wireless and reverse wireless charging capabilities.
  • Advanced Connectivity: Features Wi-Fi 6 and more satellite support for better network and location.
  • Superior Build Quality: Stronger screen protection.
  • Stereo speakers: Far better audio capabilities.

Trade-offs

  • Motorola: Larger size and weight, lower performance, inferior display quality, and weaker camera system compared to S21.
  • Samsung: Smaller battery, smaller screen, missing charger in box.

3. User Profiles & Recommendations

Motorola One 5G Ace - Ideal User

  • Budget-conscious users: Seeking a large screen and decent battery life at a lower price point.
  • Casual users: Primarily interested in basic tasks such as browsing, social media, and media consumption.
  • Users who prefer a bigger screen and are less concerned about display quality.
  • Users who want a charger in the box.

Use Cases

  • Watching videos and movies on a large screen.
  • Casual gaming and light app usage.
  • Longer battery life for day-to-day tasks.
  • Basic photography with macro lens capabilities

Samsung Galaxy S21 5G - Ideal User

  • Power Users: Individuals seeking top-tier performance and advanced features.
  • Photography Enthusiasts: Those who want a versatile and high-quality camera system.
  • Multimedia Lovers: Users who value superior display quality and excellent audio.
  • Users who prefer premium build quality, and more future updates.
  • Users who need to use two SIM cards simultaneously.

Use Cases

  • Demanding mobile gaming and intensive app usage.
  • Professional-quality photo and video capture.
  • Enjoying HDR content with high display quality.
  • Smooth multitasking and fast app loading.

4. Decision Framework

Here are key questions to help buyers decide between these phones:

  1. What is your budget?
    • If budget is a primary concern, the Motorola is the cheaper option.
  2. How important are display quality and performance to you?
    • If these are critical, the S21 is vastly superior with its AMOLED display, higher refresh rate and much stronger chipset.
  3. What are your specific camera needs?
    • If you need a versatile camera system with optical zoom and video recording features, S21 is much better. The Motorola has a macro lens, if this is a requirement, it might be an advantage.

Scenario-Based Recommendations

  • Scenario 1: Casual user with a limited budget

    • Recommendation: Motorola One 5G Ace is the practical choice due to its large screen and better battery, at a lower price point.
  • Scenario 2: Demanding user who wants the best performance and camera

    • Recommendation: Samsung Galaxy S21 5G is the clear winner with better display quality, camera capabilities, and performance.
  • Scenario 3: User who values a large screen and long battery life, but doesn't need advanced features:

    • Recommendation: Motorola One 5G Ace is suitable due to its larger screen and bigger battery.
  • Scenario 4: User who values future-proofing and premium experience

    • Recommendation: Samsung Galaxy S21 5G. The better screen, better performance and build quality will last longer.

My Choice

If I had to choose, I would pick the Samsung Galaxy S21 5G. While the Motorola One 5G Ace offers a larger screen and bigger battery, the S21 delivers a significantly superior user experience in key areas that are most important to me. The much better display, far stronger performance, far superior camera, and faster charging justify the higher price for a user looking for a high-end experience. For me, a premium display, great performance and better image quality are more valuable than a bigger screen and battery alone.

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.

Key Strengths:

  • Mobile technology analysis
  • Digital media communication
  • Technical storytelling
  • User-centric technology insights

Bridging technical complexity with engaging, accessible narratives.