Samsung Galaxy A02 vs OnePlus 9 Pro - Detailed Phone Comparison

Detailed Comparison

Specification
OnePlus 9 Pro
OnePlus 9 Pro
Oneplus

General

Launch Date January 27, 2021 March 30, 2021
Release Year 2021 2021

Physical

Volume 113.27 cm³ 104.5 cm³
Screen Size to Weight Ratio 3.16 "/g 3.4 "/g
Weight 206 g 197 g
Height 164 mm 163.2 mm
Width 75.9 mm 73.6 mm
Thickness 9.1 mm 8.7 mm
Foldable Design No No
Available Colors
  • Black
  • Blue
  • Forest Green
  • Morning Mist
  • Stellar Black

Display

Screen Size 6.5 " 6.7 "
Resolution 720 x 1600 1440 x 3216
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 81.9 % 89.9 %
Pixel Density 270 PPI 525 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 118.34 mAh/in² 100.25 mAh/in²
Battery Density 44.14 mAh/cm³ 43.06 mAh/cm³
Battery Capacity 5000 mAh 4500 mAh
NFC Support No Yes
Chipset Mediatek MT6739W (28 nm) Qualcomm SM8350 Snapdragon 888 5G (5 nm)
CPU Quad-core 1.5 GHz Cortex-A53 Octa-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55
GPU PowerVR GE8100 Adreno 660

Connectivity

USB Version 2.0 3.1
OTG Support 1
DisplayPort
DisplayPort Version N/A N/A
USB Features microUSB 2.0 USB Type-C 3.1, OTG

Software

Operating System Android Android
Initial OS Version 10 11
Maximum OS Version 11 14

Comparison Summary

1. Specifications Comparison

FeatureSamsung Galaxy A02OnePlus 9 ProPractical Impact
Design
Dimensions164 × 75.9 × 9.1 mm163.2 × 73.6 × 8.7 mmA02 slightly larger & thicker, may feel less comfortable in hand/pocket.
Weight206g197gOnePlus 9 Pro is slightly lighter, more comfortable for long usage.
Display
Size6.5"6.7"OnePlus 9 Pro offers slightly more screen real estate for content consumption.
Resolution720x16001440x3216OnePlus 9 Pro offers far sharper and more detailed visuals.
Pixel Density270 PPI525 PPIOnePlus 9 Pro has a noticeably sharper and clearer display, important for text clarity and detail.
TechnologyPLS LCDUnspecifiedDisplay technology is unknown for the OnePlus, but PLS LCD is a common entry-level LCD.
Refresh Rate60Hz120HzOnePlus 9 Pro provides smoother animations and scrolling for a more fluid experience.
Brightness0 nits1300 nitsOnePlus 9 Pro is vastly superior in outdoor visibility, easily viewable under sunlight.
Performance
ChipsetMediatek MT6739W (28nm)Snapdragon 888 (5nm)OnePlus 9 Pro is significantly faster for gaming, multitasking, and overall app performance.
AnTuTu Score50,774877,600OnePlus 9 Pro offers dramatically better performance, smoother and quicker loading.
GPUPowerVR GE8100Adreno 660OnePlus 9 Pro handles graphically intensive tasks, including high-end gaming with better performance.
Battery
Capacity5000mAh4500mAhSamsung Galaxy A02 has a slightly larger battery for longer usage between charges.
Charging7.5W65WOnePlus 9 Pro charges much faster, reducing downtime considerably.
FeaturesNon-removableWireless, Reverse, Non-removableOnePlus 9 Pro has added benefit of Wireless and Reverse charging for convenience.
Camera
Main Camera13MP, f/1.948MP, f/1.8, Sony IMX789OnePlus 9 Pro has significantly better camera performance, capturing more detail and better low-light performance.
Selfie Camera5MP, f/2.016MP, f/2.4, Sony IMX471OnePlus 9 Pro has higher-resolution selfie camera with greater detail, but a slightly narrower aperture.
Telephoto LensNone8MP, f/2.4, OV08A10OnePlus 9 Pro provides zoom capabilities without significant loss of quality
Wide Angle LensNone50MP, f/2.2, Sony IMX766OnePlus 9 Pro captures a wider field of view, useful for landscape and group photos
Macro Lens2MP, f/2.4NoneSamsung Galaxy A02 allows for close-up photography, albeit with lower resolution.
B&W CameraNone2MP, f/2.4OnePlus 9 Pro offers a dedicated monochrome sensor for better B&W shots.
Video1080p@30fps8K@30fps, 4K@120fpsOnePlus 9 Pro has far superior video recording capabilities, offering higher resolution and framerates with better stabilization.
FeaturesBasic featuresAdvanced featuresOnePlus 9 Pro has advanced options like OIS, RAW capture, and Night Mode for better image quality.
Software
OSAndroid 10, Max 11Android 11, Max 14OnePlus 9 Pro has a newer OS version with longer support & features.
Connectivity
Wi-Fi802.11b/g/n802.11a/b/g/n/ac/axOnePlus 9 Pro has faster and more stable Wi-Fi performance using newer standards.
Bluetooth4.2 LE5.2 LEOnePlus 9 Pro has better connection stability and higher data transfer rate.
GPSGPS, A-GPS, GLONASSGPS, A-GPS, GLONASS, Beidou, GalileoOnePlus 9 Pro provides more precise positioning via more satellite connectivity.
SIMDual SIM Dual StandbyDual SIM Dual StandbyBoth offer the same dual sim functionality.
Storage
Internal Storage32/64GB128/256GBOnePlus 9 Pro has significantly more internal storage for apps and media.
RAM2/3/4GB8/12GBOnePlus 9 Pro has significantly more RAM for smoother multitasking and demanding applications.
Expandable StorageNoneNoneNeither phone allows for extra storage through SD cards.
Audio
QualityDolby AtmosDolby Atmos, Stereo Speakers, 3 MicrophonesOnePlus 9 Pro offers richer sound, clearer calls, better audio separation and immersion.
Security
FeaturesBasicFingerprint sensorOnePlus 9 Pro provides enhanced security with fingerprint unlock, more convenient compared to pattern or pin.
Build Quality
Screen ProtectionUnknownCorning Gorilla Glass 5OnePlus 9 Pro has better protection from scratches and drops, enhancing durability.
Sensors
SensorsAccelerometer, ProximityAccelerometer, Compass, Gyroscope, Fingerprint, ProximityOnePlus 9 Pro includes a wider variety of sensors, including gyroscope for better gaming experience and fingerprint sensor for ease of access.

2. Key Differences Analysis

Samsung Galaxy A02 Advantages:

  • Larger Battery: Offers 500mAh more battery capacity, potentially providing longer battery life for basic usage.
  • Macro Lens: Dedicated macro camera for closeup photography.

Practical Implications:

  • The larger battery might allow for a bit more usage between charges for basic tasks like calling, texting, and browsing.
  • Macro lens enables detailed close-up shots of small objects.

OnePlus 9 Pro Advantages:

  • Superior Display: Much higher resolution, pixel density, refresh rate, and brightness for a significantly better viewing experience.
  • Massive Performance Boost: The Snapdragon 888 chipset is significantly faster for all tasks, including gaming and multitasking.
  • Much Faster Charging: 65W fast charging dramatically reduces charging time compared to the 7.5W on the A02.
  • Advanced Camera System: Significantly better main camera, wide-angle lens, telephoto lens, and video recording capabilities.
  • Modern Software and Features: Runs on a newer Android version, includes features like wireless charging, reverse charging, stereo speakers, and a fingerprint sensor.

Practical Implications:

  • The display on the 9 Pro provides much sharper visuals, excellent for watching media or detailed work.
  • The 9 Pro is smoother and more responsive in daily use because of the superior performance.
  • Fast charging means you can quickly top up the battery.
  • The 9 Pro's camera offers superior image quality, flexibility, and advanced video capabilities.
  • Modern software means you get the latest features and security updates.

Significant Trade-offs:

  • Price: The OnePlus 9 Pro is likely considerably more expensive than the Galaxy A02.
  • Battery Capacity: The A02 has slightly more battery capacity, potentially lasting longer if used lightly.

3. User Profiles & Recommendations

Samsung Galaxy A02:

  • Ideal User: Budget-conscious individuals who need a basic smartphone for everyday tasks like calls, texts, simple social media, and web browsing.
  • Use Cases:
    • First smartphone for a child or elderly person.
    • Secondary phone for basic communication.
    • Users with minimal app usage.
    • Users who prioritize battery life.
  • Price-to-Value Ratio: Offers essential smartphone functionalities at a very affordable price.

OnePlus 9 Pro:

  • Ideal User: Tech enthusiasts, power users, mobile gamers, and photography lovers.
  • Use Cases:
    • High-end mobile gaming.
    • Photography and video creation.
    • Multitasking between multiple apps.
    • Smooth experience for entertainment and browsing.
    • Users needing fast charging and wireless charging.
  • Price-to-Value Ratio: Provides flagship-level performance and features, offering great value for demanding users.

4. Decision Framework

Key Questions to Consider:

  1. Budget: How much are you willing to spend on a smartphone?
  2. Primary Use: What will be the most important usage of the phone (e.g., calls, gaming, photography)?
  3. Performance Needs: How much speed and smoothness do you require?

Scenario-Based Recommendations:

  • Scenario 1: Tight Budget, Basic Use: Choose the Samsung Galaxy A02. It fulfills basic requirements affordably.
  • Scenario 2: Moderate Budget, Better Performance: The OnePlus 9 Pro is a better option.
  • Scenario 3: High-End Performance, Gaming & Photography: The OnePlus 9 Pro is the clear choice.
  • Scenario 4: Long Battery Life is Key: The Samsung Galaxy A02 should be considered.

What I would choose and why!

Given my preferences and usage patterns, I would choose the OnePlus 9 Pro. While the Samsung Galaxy A02 offers a slightly larger battery, the differences in performance, display quality, camera capabilities, and overall user experience are just too vast to ignore.

Here's my breakdown:

  • Performance: The Snapdragon 888 chip in the OnePlus 9 Pro ensures smooth multitasking, fast app loading, and an overall snappy experience. This is crucial for me as a power user.
  • Display: The significantly higher resolution and 120Hz refresh rate of the OnePlus 9 Pro would make daily use a much more visually enjoyable experience.
  • Camera: I highly value a versatile camera system, and the OnePlus 9 Pro's multi-lens setup and higher quality sensors are a huge advantage.
  • Modern Features: Having wireless charging, a fingerprint sensor, and a more modern OS would greatly improve the user experience.
  • Long-term use: The improved performance, larger RAM, better display, and the newer OS mean the OnePlus 9 Pro will likely remain relevant and capable for far longer than the Galaxy A02.

Although the OnePlus 9 Pro is significantly more expensive, the sheer upgrade in user experience makes it the superior choice 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.

Key Strengths:

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