OnePlus 9 vs Samsung Galaxy A03s - Detailed Phone Comparison

Detailed Comparison

Specification
OnePlus 9
OnePlus 9
Oneplus

General

Launch Date March 26, 2021 August 18, 2021
Release Year 2021 2021

Physical

Volume 103.29 cm³ 113.41 cm³
Screen Size to Weight Ratio 3.41 "/g 3.32 "/g
Weight 192 g 196 g
Height 160 mm 164.2 mm
Width 74.2 mm 75.9 mm
Thickness 8.7 mm 9.1 mm
Foldable Design No No
Available Colors
  • Winter Mist
  • Arctic Sky
  • Astral Black
  • Black
  • Blue
  • White

Display

Screen Size 6.55 " 6.5 "
Resolution 1080 x 2400 720 x 1600
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 87.2 % 81.8 %
Pixel Density 402 PPI 270 PPI
Refresh Rate 120 Hz N/A
Typical Brightness N/A N/A
HBM Brightness N/A N/A
Peak Brightness 1100 nits N/A

Hardware

Battery Capacity per Screen Area 104.89 mAh/in² 118.34 mAh/in²
Battery Density 43.57 mAh/cm³ 44.09 mAh/cm³
Battery Capacity 4500 mAh 5000 mAh
NFC Support Yes Yes
Chipset Qualcomm SM8350 Snapdragon 888 5G (5 nm) Mediatek MT6765 Helio P35 (12 nm)
CPU Octa-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55) Octa-core (4x2.35 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53)
GPU Adreno 660 PowerVR GE8320

Connectivity

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

Software

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

Comparison Summary

Smartphone Comparison: OnePlus 9 vs. Samsung Galaxy A03s

1. Specifications Comparison

FeatureOnePlus 9Samsung Galaxy A03sPractical Impact
Design
Dimensions160 × 74.2 × 8.7 mm164.2 × 75.9 × 9.1 mmOnePlus 9 is slightly smaller and thinner, potentially more comfortable in hand. A03s is larger and bulkier.
Weight192g196gNegligible difference; both feel similar in weight.
Display
Size6.55"6.5"Minimal difference, virtually identical viewing area.
Resolution1080 x 2400720 x 1600OnePlus 9 offers a much sharper and clearer picture. Text and images appear crisper.
PPI402270OnePlus 9 has significantly higher pixel density leading to more detailed visuals.
TechnologyAMOLEDPLS LCDOnePlus 9 has better contrast, deeper blacks, and more vibrant colors, plus better efficiency for dark themes.
Refresh Rate120Hz60HzOnePlus 9 provides much smoother scrolling and animations, enhances gaming experience.
Brightness1100 nits0 nitsOnePlus 9 screen is much brighter for outdoor visibility, A03s brightness is unknown and likely much lower.
Performance
ChipsetQualcomm Snapdragon 888 5G (5 nm)Mediatek Helio P35 (12 nm)OnePlus 9 offers drastically faster performance for demanding tasks, gaming, and app loading.
AnTuTu Score880,900117,049OnePlus 9 is significantly faster. Offers much better overall performance and responsiveness.
GPUAdreno 660PowerVR GE8320OnePlus 9 will deliver a far superior gaming experience and handle graphics-intensive tasks better.
Camera
Rear Camera (Main)48MP, f/1.79, 1/1.4", Sony IMX68913MP, f/2.2OnePlus 9 captures much more detailed photos in various lighting conditions.
Rear Camera (Wide)50MP, f/2.2, 1/1.56", Sony IMX766N/AOnePlus 9 has an ultrawide lens for wider shots and better landscape photography.
Rear Camera (Macro)N/A2MP, f/2.3Samsung Galaxy A03s has a dedicated macro lens for close-up photography.
Rear Camera (B&W)2MP, f/2.4N/AOnePlus 9 provides a dedicated black & white sensor for artistic monochrome photography.
Front Camera16MP, f/2.4, 1/3.13", Sony IMX4715MP, f/2.0OnePlus 9 has a much higher resolution front camera for detailed selfies.
Video RecordingUp to 8K@30fpsUp to 1080p@30fpsOnePlus 9 provides far superior video recording capabilities, suitable for professional-grade content creation.
Camera FeaturesAdvanced features: 8K, PDAF, RAW, night modeBasic features: HDR, panoramaOnePlus 9 has significantly more advanced and versatile camera features, offering better control over images.
Battery
Capacity4500 mAh5000 mAhSamsung Galaxy A03s has a slightly larger battery, potentially offering a little more battery life.
Charging65W Fast Charging, 15W Wireless ChargingNo fast charging, Standard Li-Ion ChargingOnePlus 9 charges much faster and can charge wirelessly, offering more convenience.
Software
OSAndroid 11 (upgradable to 13)Android 11 (upgradable to 12)OnePlus 9 is supported for longer with a more recent OS version.
Connectivity
Wi-FiWi-Fi 6 (802.11ax)Wi-Fi 4 (802.11n)OnePlus 9 offers faster Wi-Fi speeds and better performance in crowded areas.
Bluetooth5.2, aptX, LDAC5.0OnePlus 9 has newer Bluetooth version and supports high-fidelity codecs for enhanced audio.
GPSGPS (L1+L5), BeiDou (B1,B2), Galileo (E1+E5a)GPS, A-GPS, GLONASSOnePlus 9 offers more precise location tracking by supporting more satellite systems.
Storage
Internal128/256GB32/64GBOnePlus 9 provides significantly more storage, better for storing more apps, photos and videos.
RAM8/12GB3/4GBOnePlus 9 provides more RAM for better multitasking, running multiple apps without lag.
Expandable StorageNoNoNeither phone supports expandable storage, making initial storage selection critical.
Audio
QualityDolby Atmos, Stereo Speakers, Noise cancellationBasic audioOnePlus 9 provides enhanced audio output with stereo speakers and noise cancellation for clearer calls and multimedia experience.
Security
FeaturesBasic fingerprint sensorside-mounted fingerprint sensorSamsung Galaxy A03s has a more conveniently placed side mounted fingerprint sensor.
Build Quality
ProtectionCorning Gorilla Glass 5Screen protection is unknownOnePlus 9's screen is more resistant to scratches and minor impacts.
Sensors
SensorsAccelerometer, Compass, GyroscopeAccelerometerOnePlus 9 has a more complete sensor package, enabling more functionality and gaming experiences.

2. Key Differences Analysis

OnePlus 9 Advantages:

  • Superior Display: AMOLED with higher resolution, refresh rate, brightness for a far more vibrant and smoother viewing experience.
  • Significantly Faster Performance: The Snapdragon 888 chipset provides a vastly superior performance for all tasks.
  • Much Better Cameras: Higher-resolution sensors, wide-angle lens, and advanced features result in much better photos and video quality.
  • Faster Charging and Wireless Charging: The 65W fast charging and 15W wireless charging is a huge convenience.
  • Advanced Connectivity: Wi-Fi 6 and Bluetooth 5.2 for faster and more stable connections.
  • Better Audio: Stereo speakers, Dolby Atmos and noise-cancelling microphone for superior media and call quality.
  • More storage and RAM: Significantly more internal storage and RAM for better multitasking and storing more data.

Samsung Galaxy A03s Advantages:

  • Slightly Larger Battery: May offer marginally longer battery life.
  • Dedicated Macro Lens: The macro lens may be useful to some for specific close-up photography needs.
  • Side-Mounted Fingerprint Sensor: Conveniently placed, may offer a faster unlocking experience.
  • Lower Price: Typically more affordable, making it attractive for budget-conscious users.

Significant Trade-offs:

  • OnePlus 9: Higher cost for premium features. No expandable storage.
  • Samsung Galaxy A03s: Significantly lower performance, lower-quality display and cameras, slower charging, basic audio features, and older software support.

3. User Profiles & Recommendations

OnePlus 9 Ideal User:

  • Users who prioritize performance, want fast app loading, smooth multitasking, and high-end gaming.
  • Individuals who value display quality, enjoying vivid, smooth, and sharp visuals for media consumption.
  • Photography enthusiasts who need high-quality cameras with advanced features, for detailed pictures and video.
  • Users who value fast charging and convenience.

Use Cases:

  • Playing demanding mobile games like Genshin Impact or Call of Duty Mobile.
  • Editing photos and videos on-the-go.
  • Watching high-definition movies and shows.
  • Running multiple applications and multitasking.
  • Those who use their phone for navigation and rely on accurate GPS.

Samsung Galaxy A03s Ideal User:

  • Budget-conscious users who need basic smartphone functionalities.
  • Users who prioritize battery life over performance.
  • Individuals with basic smartphone usage requirements who don't need high performance or premium features.

Use Cases:

  • Basic web browsing and social media use.
  • Simple casual mobile games.
  • Sending emails and text messages.
  • Taking occasional photos for social media.
  • Users who primarily want a long-lasting phone for basic functionality.

4. Decision Framework

Key Questions to Consider:

  1. Budget: How much are you willing to spend on a smartphone?
  2. Primary Use: What is your phone's main purpose? (e.g., gaming, photography, basic communication)
  3. Performance Needs: How important is speed and responsiveness for your daily tasks?

Scenario-Based Recommendations:

  • Scenario 1 (High Performance & Features): If you prioritize performance, display quality, and camera capabilities, and have a higher budget, the OnePlus 9 is the clear choice.
  • Scenario 2 (Basic Use & Budget): If you have a limited budget and need a phone for basic communication, browsing, and casual use, and battery life is a priority, the Samsung Galaxy A03s might suffice.
  • Scenario 3 (Balanced User): If you are somewhere in between, consider whether the benefits of superior performance, camera and display quality are worth the additional cost. If they are, then the OnePlus 9 would still be the better choice, even if it means spending more.

My Choice

If I had to choose, I would definitely go with the OnePlus 9. While the Samsung Galaxy A03s offers a lower price point and potentially slightly better battery life, the OnePlus 9 is a much more capable device overall, with significantly better performance, a superior display, a much more versatile camera system and faster charging capabilities. The user experience on the OnePlus 9 would be significantly better, offering smoother performance for years to come. The superior audio quality is also a big plus, and the features that are exclusively on this phone justify the higher cost. The faster charging and better screen are also huge benefits for everyday use. While the A03s is a budget option that serves a purpose, the OnePlus 9 is a better investment for the long term and offers a far superior experience.

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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Bridging technical complexity with engaging, accessible narratives.