Samsung Galaxy A02s vs Motorola Moto G51 5G - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date January 4, 2021 December 16, 2021
Release Year 2021 2021

Physical

Volume 113.41 cm³ 118.69 cm³
Screen Size to Weight Ratio 3.32 "/g 3.27 "/g
Weight 196 g 208 g
Height 164.2 mm 170.5 mm
Width 75.9 mm 76.5 mm
Thickness 9.1 mm 9.1 mm
Foldable Design No No
Available Colors
  • Black
  • Red
  • Blue
  • White
  • Indigo Blue
  • Bright Silver
  • Aqua Blue

Display

Screen Size 6.5 " 6.8 "
Resolution 720 x 1600 1080 x 2400
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 81.8 % 85.6 %
Pixel Density 270 PPI 387 PPI
Refresh Rate N/A 120 Hz
Typical Brightness N/A N/A
HBM Brightness N/A N/A
Peak Brightness N/A N/A

Hardware

Battery Capacity per Screen Area 118.34 mAh/in² 108.13 mAh/in²
Battery Density 44.09 mAh/cm³ 42.13 mAh/cm³
Battery Capacity 5000 mAh 5000 mAh
NFC Support No Yes
Chipset Qualcomm SDM450 Snapdragon 450 (14 nm) Qualcomm SM4350-AC Snapdragon 480+ 5G (8 nm)
CPU Octa-core 1.8 GHz Cortex-A53 Octa-core (2x2.2 GHz Kryo 460 & 6x1.8 GHz Kryo 460)
GPU Adreno 506 Adreno 619

Connectivity

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

Software

Operating System Android Android
Initial OS Version 10 11
Maximum OS Version 12 12

Comparison Summary

1. Specifications Comparison

FeatureSamsung Galaxy A02sMotorola Moto G51 5GPractical Impact
Design
Dimensions164.2 × 75.9 × 9.1 mm170.5 × 76.5 × 9.1 mmMoto G51 5G is slightly taller, but both have similar width and thickness.
Weight196g208gA02s is slightly lighter, may feel less tiring to hold for extended periods.
Display
Size6.5"6.8"Moto G51 5G offers a more immersive viewing experience due to larger screen.
Resolution720x16001080x2400Moto G51 5G has significantly sharper text and images, better for media consumption and detailed content.
Pixel Density (PPI)270387Moto G51 5G display looks noticeably crisper, reduces pixelation.
TechnologyPLS LCDIPS LCDMoto G51 5G should have better viewing angles and color accuracy.
Refresh Rate60Hz120HzMoto G51 5G provides smoother scrolling and animations, a more responsive user experience.
Brightness0 nits0 nitsBoth have unknown peak brightness, making outdoor visibility hard to predict
Performance
ChipsetSnapdragon 450 (14 nm)Snapdragon 480+ 5G (8 nm)Moto G51 5G is much faster and more efficient, better for gaming and demanding apps.
AnTuTu Score74,800381,000Moto G51 5G offers significantly superior performance, noticeable in everyday use and when multitasking.
GPUAdreno 506Adreno 619Moto G51 5G provides better graphics performance for gaming and video editing.
Camera
Rear Camera Resolution13MP50MPMoto G51 5G captures much more detailed photos, better for capturing memories and having more zoom capabilities
Front Camera Resolution5MP13MPMoto G51 5G takes higher quality selfies and can record better quality video.
Wide Angle LensNo8MPMoto G51 5G can capture wider landscapes and group photos.
Depth Sensor2MPNoA02s can create portrait shots with background blur.
Macro Lens2MP2MPBoth offer similar close-up capabilities
Video Recording1080p@30fps1080p@30fps, 60fps, 240fpsMoto G51 5G has more versatile video recording with 60fps and slow-motion.
Camera FeaturesBasicAdvanced with Laser Autofocus, RAWMoto G51 5G offers faster focus and greater control for photography enthusiasts.
Battery
Capacity5000mAh5000mAhBoth phones should offer similar battery life under typical usage.
Charging15W10WA02s charges faster, reducing downtime.
Software & Connectivity
OSAndroid 10 (upgradeable to 12)Android 11 (upgradeable to 12)Moto G51 5G starts with a newer version of Android out of the box. Both can be updated to the same version.
Wi-Fi802.11b/g/n802.11a/b/g/n/acMoto G51 5G has faster and more stable Wi-Fi connectivity with ac support.
Bluetooth4.25.1Moto G51 5G has a more efficient and potentially more stable Bluetooth connection.
GPSGPS, A-GPS, GLONASS, Beidou, GalileoGPS, A-GPS, GLONASS, Beidou, SUPL, GalileoMoto G51 5G has similar location capabilities with additional support for SUPL.
Storage
Internal Storage32GB/64GB64GB/128GBMoto G51 5G offers more storage space for apps, photos, and videos.
RAM3GB/4GB4GB/8GBMoto G51 5G can handle more apps running in the background without slowing down.
Expandable StorageNoNoNeither phone provides expandable storage
Audio
Audio QualityBasicDolby Atmos, 2 MicrophonesMoto G51 5G offers enhanced spatial audio and improved call quality.
Security
SecurityBasicFingerprint sensorMoto G51 5G has convenient and secure biometric authentication.
Sensors
SensorsAccelerometer, ProximityFingerprint, Accelerometer, Gyroscope, ProximityMoto G51 5G has additional sensors, enabling better motion tracking in apps and games.

2. Key Differences Analysis

Samsung Galaxy A02s Advantages:

  • Slightly Lighter: Easier to hold for long periods.
  • Faster Charging: 15W vs 10W, less time plugged in.
  • Dedicated Depth Sensor: Enables portrait mode shots with blurred backgrounds.

Motorola Moto G51 5G Advantages:

  • Superior Performance: Much faster processor and GPU for better overall performance.
  • Significantly Better Display: Higher resolution, sharper images, smoother refresh rate.
  • Enhanced Camera: Higher resolution front and rear cameras, plus a wide-angle lens for more versatile photography.
  • Advanced Video Recording: 1080p at 60fps and 240 fps slow-motion.
  • Better Audio: Dolby Atmos and dual microphones for enhanced audio and call quality.
  • More Storage and RAM: Larger internal storage options and more RAM for smoother multitasking.
  • More Advanced Connectivity: Supports dual band wifi and Bluetooth 5.1
  • Fingerprint Sensor: Added security and convenience.
  • More Sensors: Includes a gyroscope sensor for better gaming and app experiences
  • More Future-Proof: Due to its more powerful chipset, it will likely be more relevant for a longer time

Significant Trade-offs:

  • Samsung Galaxy A02s: Significantly lower performance and display quality, which impacts user experience considerably but does have slightly faster charging and a depth sensor.
  • Motorola Moto G51 5G: Slightly heavier and slower charging than Samsung Galaxy A02s.

3. User Profiles & Recommendations

Samsung Galaxy A02s:

  • Ideal User: Budget-conscious users who prioritize affordability over performance, who need a phone for basic tasks.
  • Use Cases:
    • Basic communication (calls, texts, social media)
    • Simple web browsing and light app usage
    • Occasional photography in good lighting conditions
    • Users who prefer less weight in their hand and slightly faster charging.

Motorola Moto G51 5G:

  • Ideal User: Users who want a balanced phone with strong performance, good display, and versatile camera at a competitive price.
  • Use Cases:
    • Mobile gaming and multimedia consumption
    • Photography and video recording in various conditions
    • Multitasking between several apps.
    • Users looking for better display quality and more smooth animations
    • Users who prefer to use their phone for a longer period of time before having to replace

4. Decision Framework

Key Questions to Consider:

  1. Budget: How much are you willing to spend on a smartphone?
  2. Performance Needs: Do you need a phone for demanding tasks like gaming or just for basic use?
  3. Camera Requirements: Do you prioritize high-quality photos and videos, or are basic camera functions sufficient?

Scenario-Based Recommendations:

  • Scenario 1: Extremely Tight Budget: If the absolute lowest price is the only factor, the Samsung Galaxy A02s may be the better choice despite its drawbacks, however it's better to save up for the Moto.

  • Scenario 2: Performance is Key: The Motorola Moto G51 5G is the clear winner here with its much better chipset and processing power. It is ideal for users who need smooth multitasking and solid gaming performance.

  • Scenario 3: Versatile Camera Usage: The Motorola Moto G51 5G offers more flexibility with its triple camera system and better video recording options, which makes it the best option for those who take a lot of photos.

My Choice and Why

If I were choosing between these two phones, I would choose the Motorola Moto G51 5G.

Here's why:

  • The performance difference is massive: The Snapdragon 480+ 5G is significantly more powerful than the Snapdragon 450. This directly translates to a much smoother user experience, especially when multitasking or running resource-intensive apps.
  • Display Quality: The higher resolution, higher refresh rate display on the Moto G51 5G makes a noticeable difference in day-to-day use. The better color accuracy also enhances the experience of consuming media on the phone.
  • Camera Versatility: While I don't take photos constantly, having the ability to capture higher-quality photos and videos with a wide-angle lens and better video recording is a very nice advantage.
  • More Future Proof: The Moto G51 5G feels like a more relevant phone that will last longer, thanks to the superior chipset, RAM, and internal storage.
  • Security: The convenience and security of the fingerprint reader is a useful addition.

The slightly slower charging and the extra weight of the Moto G51 5G are worth the trade-off for the significantly improved performance, display, and camera capabilities. The Samsung Galaxy A02s is a budget phone that performs as such, while the Moto G51 5G offers a superior experience all around, making it worth spending a bit more.

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
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Bridging technical complexity with engaging, accessible narratives.