Oppo A15 vs OnePlus 9 Pro - Detailed Phone Comparison

Detailed Comparison

Specification
Oppo A15
Oppo A15
Oppo
OnePlus 9 Pro
OnePlus 9 Pro
Oneplus

General

Launch Date October 27, 2020 March 30, 2021
Release Year 2020 2021

Physical

Volume 97.69 cm³ 104.5 cm³
Screen Size to Weight Ratio 3.73 "/g 3.4 "/g
Weight 175 g 197 g
Height 164 mm 163.2 mm
Width 75.4 mm 73.6 mm
Thickness 7.9 mm 8.7 mm
Foldable Design No No
Available Colors
  • Dynamic Black
  • Mystery Blue
  • Forest Green
  • Morning Mist
  • Stellar Black

Display

Screen Size 6.52 " 6.7 "
Resolution 720 x 1600 1440 x 3216
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 83 % 89.9 %
Pixel Density 269 PPI 525 PPI
Refresh Rate N/A 120 Hz
Typical Brightness 480 nits N/A
HBM Brightness N/A N/A
Peak Brightness N/A 1300 nits

Hardware

Battery Capacity per Screen Area 99.51 mAh/in² 100.25 mAh/in²
Battery Density 43.3 mAh/cm³ 43.06 mAh/cm³
Battery Capacity 4230 mAh 4500 mAh
NFC Support No Yes
Chipset Mediatek MT6765 Helio P35 (12 nm) Qualcomm SM8350 Snapdragon 888 5G (5 nm)
CPU Octa-core (4x2.35 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53) Octa-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55
GPU PowerVR GE8320 Adreno 660

Connectivity

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

Software

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

Comparison Summary

1. Specifications Comparison

Here's a detailed comparison of the Oppo A15 and OnePlus 9 Pro, focusing on practical user experience:

FeatureOppo A15OnePlus 9 ProPractical Impact
Design
Dimensions164 × 75.4 × 7.9 mm163.2 × 73.6 × 8.7 mmOnePlus 9 Pro is slightly more pocketable due to being narrower, but a bit thicker.
Weight175g197gOppo A15 is noticeably lighter, making it more comfortable for prolonged use.
Build Quality (Screen)Corning Gorilla Glass 3Corning Gorilla Glass 5OnePlus 9 Pro's screen is more resistant to scratches and drops.
Display
Size6.52"6.7"OnePlus 9 Pro offers a slightly larger viewing area, better for media consumption and multitasking.
Resolution720x16001440x3216OnePlus 9 Pro's display is significantly sharper, resulting in clearer text, images, and videos.
PPI269525Images on the OnePlus 9 Pro are considerably more detailed.
TechnologyIPS LCDN/AThe Oppo A15 has an IPS LCD display, but the OnePlus 9 Pro display technology is missing.
Refresh Rate60Hz120HzOnePlus 9 Pro provides much smoother scrolling, animations, and gaming experiences.
Brightness0 nits1300 nitsOnePlus 9 Pro's screen is much more visible outdoors in bright sunlight.
Performance
ChipsetMediatek MT6765 Helio P35 (12 nm)Qualcomm SM8350 Snapdragon 888 5G (5 nm)OnePlus 9 Pro delivers significantly faster performance for apps, games, and multitasking.
AnTuTu Score113,000877,600Represents real-world speed difference. OnePlus 9 Pro is far more responsive.
GPUPowerVR GE8320Adreno 660OnePlus 9 Pro handles graphically intensive tasks and games much better.
RAM2/3/4 GB8/12 GBOnePlus 9 Pro allows for more apps to run in the background and smoother multitasking.
Camera
Main Camera13MP, f/2.248MP, f/1.8OnePlus 9 Pro captures more detailed photos, especially in low light, thanks to the larger sensor and wider aperture.
Selfie Camera5MP, f/2.416MP, f/2.4OnePlus 9 Pro takes higher-resolution and clearer selfies.
Telephoto LensNo8MP, f/2.4OnePlus 9 Pro can zoom in without significant loss of quality.
Wide Angle LensNo50MP, f/2.2OnePlus 9 Pro captures significantly wider scenes.
Portrait Mode (depth)2MP, f/2.4NoOppo A15 can take portrait shots
Macro Lens2MP, f/2.4NoOppo A15 can take close up macro shots
Video Recording1080p@30fps8K@30fps, 4K@120fpsOnePlus 9 Pro offers far superior video recording capabilities, including higher resolutions, frame rates, and stabilization.
DXOMark ScoreN/A122Indicates better image and video quality on the OnePlus 9 Pro.
Camera FeaturesDigital zoom, Triple camera, Digital image stabilization, Autofocus, Touch focus, Phase detection autofocus (PDAF), Geotagging, Panorama, HDR, Face detection, White balance settings, ISO settings, Exposure compensation, Scene mode, Self-timer, Night Mode4K Video, 8K Video, Digital zoom, Optical zoom, Quadruple camera, Digital image stabilization, Optical Stabilization (OIS), Ultra stable video, Autofocus, Touch focus, Continuous autofocus, Manual focus, Phase detection autofocus (PDAF), Contrast detection autofocus (CDAF), Laser autofocus (LAF), Continuous shooting, Geotagging, Panorama, HDR, Face detection, White balance settings, ISO settings, Exposure compensation, Scene mode, Self-timer, RAW, Night Mode, RAW 12 bitsOnePlus 9 Pro is packed with camera features
Battery
Capacity4230mAh4500mAhSlightly better battery life on the OnePlus 9 Pro, but real-world difference depends on usage.
Charging10W65WOnePlus 9 Pro charges much faster, significantly reducing downtime.
Wireless ChargingNo50WOnePlus 9 Pro offers convenient wireless charging.
Reverse ChargingNoYesOnePlus 9 Pro can charge other devices wirelessly.
Software & Connectivity
OSAndroid 10Android 11 (upgradable to 14)OnePlus 9 Pro receives more software updates and has more up-to-date features.
Wi-Fi802.11a/b/g/n/ac802.11 a/b/g/n/ac/ax (Wi-Fi 6)OnePlus 9 Pro supports faster and more efficient Wi-Fi.
Bluetooth5.05.2Improved connectivity and audio codec support on the OnePlus 9 Pro.
GPSGPS, A-GPS, GLONASS, Beidou, GalileoGPS, A-GPS, GLONASS, Beidou, Galileo, GPS (L1+L5), GLONASS (L1), BeiDou (B1), Galileo (E1+E5a)OnePlus 9 Pro has more advanced GPS for better location accuracy.
Storage
Internal32/128 GB128/256 GBOnePlus 9 Pro offers more storage for apps, photos, and videos.
Expandable StorageNoNoNeither phone allows for expanding storage.
Audio
Audio QualityBasic Audio FeaturesDolby Atmos, Stereo Speakers, Noise Cancellation Microphone, 3 MicrophonesOnePlus 9 Pro has much better audio quality for music, videos, and calls.
Security
Fingerprint SensorRear-mountedIn-displaySimilar biometric security, although the under-display sensor may be more convenient for some users.
Other
SensorsFingerprint, Proximity, Accelerometer, Compass, GyroscopeFingerprint, Proximity, Accelerometer, Compass, Gyroscope, GravityOnePlus 9 Pro have more extensive sensors for enhanced functionality.
## 2. Key Differences Analysis

Oppo A15 Advantages:

  • Lighter Weight: More comfortable for extended use.
  • Portrait Mode (depth): More camera options.
  • Macro Lens: More camera options.

Practical Implications: The Oppo A15 is better for users who prioritize comfort and budget.

OnePlus 9 Pro Advantages:

  • Significantly Better Performance: Faster app loading, smoother multitasking, and superior gaming.
  • Superior Display: Higher resolution, refresh rate, and brightness for a much better viewing experience.
  • Advanced Camera System: Higher resolution sensors, multiple lenses, and advanced video recording capabilities for better photos and videos.
  • Faster Charging & Wireless Charging: Significantly reduces charging time and offers convenient wireless charging.
  • More RAM and Storage: Enables smoother multitasking and storage of more files.
  • Better Audio Quality: Enhanced audio experience for media consumption and calls.
  • More Up-to-Date Software: Access to newer features and security updates.
  • Better Build Quality: More durable screen.

Practical Implications: The OnePlus 9 Pro offers a premium experience for users who demand top-tier performance, display quality, camera capabilities, and overall features.

Significant Trade-offs:

  • The Oppo A15 sacrifices performance, display quality, and camera capabilities for affordability.
  • The OnePlus 9 Pro is more expensive and heavier than the Oppo A15.

3. User Profiles & Recommendations

Oppo A15 Ideal User:

  • Budget-conscious users
  • Users who prioritize a lightweight phone
  • Individuals with basic smartphone needs (calling, texting, light social media)
  • Elderly individuals who prefer a simple and easy-to-use device

Use Cases:

  • Basic communication
  • Casual web browsing
  • Simple photography

OnePlus 9 Pro Ideal User:

  • Users who demand high performance for gaming, multitasking, and demanding apps
  • Photography enthusiasts who want a versatile and high-quality camera system
  • Users who prioritize display quality for media consumption
  • Tech-savvy individuals who want the latest features and software updates

Use Cases:

  • Gaming
  • Professional photography and videography
  • Media consumption (streaming, video editing)
  • Productivity (multitasking, running demanding apps)

4. Decision Framework

Here are three key questions for potential buyers:

  1. What is your budget? The Oppo A15 is significantly more affordable.
  2. How important is performance and display quality to you? The OnePlus 9 Pro offers a vastly superior experience.
  3. What are your primary use cases? If you need a phone for basic communication, the Oppo A15 is sufficient. If you need a powerful device for gaming, photography, or demanding apps, the OnePlus 9 Pro is the better choice.

Scenario-Based Recommendations:

  • Scenario 1: Tight Budget, Basic Needs: Choose the Oppo A15.
  • Scenario 2: Moderate Budget, Decent Performance Needed: Consider other mid-range options as the Oppo A15 might be too underpowered.
  • Scenario 3: No Budget Constraints, Demanding User: Choose the OnePlus 9 Pro.

Personal Choice

If I were to choose between these two phones, I would pick the OnePlus 9 Pro without hesitation. The significantly superior performance, display quality, and camera capabilities offer a vastly better overall user experience. While the Oppo A15 is lighter and more affordable, the trade-offs in performance and features are too significant for my usage. I use my phone for a variety of tasks, including gaming, photography, and productivity, all of which benefit greatly from the OnePlus 9 Pro's superior hardware. I would be willing to pay extra for the enhanced 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.