Oppo A15 vs Samsung Galaxy M55 - Detailed Phone Comparison

Detailed Comparison

Specification
Oppo A15
Oppo A15
Oppo

General

Launch Date October 27, 2020 March 28, 2024
Release Year 2020 2024

Physical

Volume 97.69 cm³ 97.8 cm³
Screen Size to Weight Ratio 3.73 "/g 3.72 "/g
Weight 175 g 180 g
Height 164 mm 163.9 mm
Width 75.4 mm 76.5 mm
Thickness 7.9 mm 7.8 mm
Foldable Design No No
Available Colors
  • Dynamic Black
  • Mystery Blue
  • Light Green
  • Dark Blue

Display

Screen Size 6.52 " 6.7 "
Resolution 720 x 1600 1080 x 2400
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 83 % 86.4 %
Pixel Density 269 PPI 393 PPI
Refresh Rate N/A 120 Hz
Typical Brightness 480 nits N/A
HBM Brightness N/A 1000 nits
Peak Brightness N/A N/A

Hardware

Battery Capacity per Screen Area 99.51 mAh/in² 111.38 mAh/in²
Battery Density 43.3 mAh/cm³ 51.13 mAh/cm³
Battery Capacity 4230 mAh 5000 mAh
NFC Support No Yes
Chipset Mediatek MT6765 Helio P35 (12 nm) Qualcomm SM7450-AB Snapdragon 7 Gen 1 (4 nm)
CPU Octa-core (4x2.35 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53) Octa-core (1x2.4 GHz Cortex-A710 & 3x2.36 GHz Cortex-A710 & 4x1.8 GHz Cortex-A510)
GPU PowerVR GE8320 Adreno 644

Connectivity

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

Software

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

Comparison Summary

1. Specifications Comparison

FeatureOppo A15Samsung Galaxy M55Practical Impact
Design
Dimensions164 × 75.4 × 7.9 mm163.9 × 76.5 × 7.8 mmM55 is slightly wider, but similar size. Minimal impact on portability.
Weight175g180gNegligible weight difference, unnoticeable in daily use.
Display
Size6.52"6.7"M55 offers a slightly larger viewing area, better for media consumption and gaming.
Resolution720x16001080x2400M55 display is noticeably sharper and clearer, better for reading, watching videos, and viewing images.
PPI269393M55 provides much crisper text and images, reducing eye strain during prolonged use.
TechnologyIPS LCDAMOLEDM55 produces more vibrant colors, deeper blacks, and better contrast, enhancing the viewing experience significantly. Also, better power efficiency with dark themes on M55.
Refresh Rate60Hz120HzM55 provides smoother scrolling, animations, and gaming, resulting in a more responsive and fluid experience.
Brightness0 nits0 nitsBoth phones have identical peak brightness at 0 nits. This is likely an error in the data, as brightness is a crucial display characteristic.
Performance
ChipsetMediatek MT6765 Helio P35 (12 nm)Qualcomm SM7450-AB Snapdragon 7 Gen 1 (4 nm)M55 offers significantly faster performance. Apps launch quicker, multitasking is smoother, and demanding games run better.
AnTuTu Score113,000698,000M55 is far more capable, handling demanding tasks with ease and ensuring smoother long-term performance.
GPUPowerVR GE8320Adreno 644M55 provides significantly better graphics performance, enabling smoother gaming and better performance in graphically intensive apps.
Battery
Capacity4230mAh5000mAhM55 provides longer battery life, allowing for all-day use without needing to recharge frequently.
Charging10W45WM55 charges much faster, reducing downtime and getting you back to using your phone quicker.
Camera
Main Camera13MP, f/2.250MP, f/1.8M55 captures significantly more detailed and sharper photos, especially in low light, due to higher resolution and wider aperture.
Selfie Camera5MP, f/2.450MP, f/2.2M55 takes much higher quality selfies with more detail and better low-light performance.
Wide Angle LensNo8MP, f/2.2M55 allows capturing wider scenes, fitting more into the frame, ideal for landscapes and group photos.
Portrait Mode (Depth)2MP, f/2.4NoA15 can take portrait photos with blurred background.
Video Recording1080p@30fps4K@30fps, 1080p@60fpsM55 records higher quality videos with more detail, smoother motion, and better stabilization.
Software
OSAndroid 10Android 14M55 has a newer Android version, with updated features, security patches, and a more modern user interface.
Connectivity
WiFi802.11a/b/g/n802.11a/b/g/n/ac/ax (WiFi 6)M55 supports faster and more reliable Wi-Fi connections, especially in crowded networks.
Bluetooth5.05.2M55 has a more modern and efficient Bluetooth connection.
GPSGPS, A-GPS, GLONASS, Beidou, GalileoGPS, A-GPS, GLONASS, Beidou, QZSS, Galileo, NavIC SystemM55 offers more accurate and reliable location tracking, especially in challenging environments.
Storage
Internal32GB/128GB128GB/256GBM55 provides more storage space for apps, photos, videos, and files.
RAM2GB/3GB/4GB8GBM55 allows for smoother multitasking and running more apps simultaneously without performance issues.
Expandable StorageNoNoNeither phone has expandable storage.
Audio
Audio QualityBasic audio featuresDolby AtmosM55 provides a better audio experience with wider soundstage and immersive effects.
Security
Security FeaturesRear-mounted fingerprint sensorBasic fingerprint sensorBoth phones have similar fingerprint sensor technology; Provides basic biometric security
Build Quality
Screen ProtectionCorning Gorilla Glass 3Corning Gorilla Glass 5M55 screen is more resistant to scratches and cracks.
Sensors
SensorsFingerprint, Proximity, Accelerometer, Compass, GyroscopeFingerprint, Proximity, Accelerometer, Compass, Gyroscope, GeomagneticSamsung Galaxy M55 additionally features: Geomagnetic; Comprehensive sensor suite suitable for advanced features and gaming

2. Key Differences Analysis

Oppo A15 Advantages:

  • Potentially lower price: Older phones are often available at very attractive price points.
  • Portrait mode (depth) camera: Can take portrait photos.

Practical Implications:

  • If budget is extremely limited and camera with portrait mode feature is important, the A15 might be considered.

Samsung Galaxy M55 Advantages:

  • Significantly better performance: The Snapdragon 7 Gen 1 chipset provides a much faster and smoother experience in all tasks.
  • Superior display: The AMOLED screen with a higher resolution and 120Hz refresh rate offers a vastly better viewing experience.
  • Better camera system: The higher resolution sensors, wider aperture, and additional wide-angle lens result in much better photo and video quality.
  • Longer battery life and faster charging: The larger battery and faster charging ensure all-day use and quick top-ups.
  • More modern software: Android 14 offers the latest features, security updates, and user interface improvements.
  • Better connectivity: Supports faster Wi-Fi and Bluetooth standards for improved wireless performance.
  • Dolby Atmos Audio: better audio experience.

Practical Implications:

  • The M55 offers a much more enjoyable and capable smartphone experience.
  • It's better for gaming, media consumption, photography, and overall daily use.
  • The superior display makes a huge difference in how content looks.
  • Faster performance ensures the phone remains responsive and enjoyable to use for longer.

Trade-offs:

  • The Samsung Galaxy M55 is likely more expensive.
  • The Samsung Galaxy M55 is slightly heavier (5g).

3. User Profiles & Recommendations

Oppo A15 - Ideal User:

  • Users with extremely tight budgets who only need basic smartphone functionality.
  • Individuals who primarily use their phone for calls, texts, and light browsing.

Use Cases:

  • Basic communication.
  • Emergency phone.

Samsung Galaxy M55 - Ideal User:

  • Users who want a well-rounded smartphone experience with good performance, display quality, and camera capabilities.
  • Individuals who enjoy gaming, watching videos, and taking photos.

Use Cases:

  • Gaming
  • Streaming videos
  • Social media
  • Photography and videography
  • Productivity

Price-to-Value Ratio:

  • While the Oppo A15 might seem attractive due to its low price, the Samsung Galaxy M55 offers significantly better value for the money due to its vastly superior features and performance. The M55 justifies its higher price with a much better user experience and longer lifespan.

4. Decision Framework

Key Questions for Buyers:

  1. What is your budget? (This is the primary deciding factor for many.)
  2. What are your most important use cases? (Gaming, photography, general use?)
  3. How long do you plan to use the phone? (A more powerful phone like the M55 will likely last longer and remain useful for a greater period of time.)

Scenario-Based Recommendations:

  • Scenario 1: Extremely tight budget, basic needs: If your budget is extremely limited and you only need basic communication features, the Oppo A15 might suffice. However, be prepared for a compromised experience.
  • Scenario 2: Balanced budget, general use: The Samsung Galaxy M55 is the clear winner in this scenario. It offers a great balance of features, performance, and price.
  • Scenario 3: Performance and features are paramount: The Samsung Galaxy M55 provides excellent performance and user experience.

What I Would Choose and Why

I would choose the Samsung Galaxy M55 without hesitation. While the Oppo A15 might be appealing to someone on a very tight budget, the difference in overall user experience is massive. The M55 offers a vastly superior display (AMOLED, higher resolution, 120Hz), significantly better performance for all tasks (Snapdragon 7 Gen 1), a much better camera system for photos and videos, a longer battery life, and a more modern software experience.

Essentially, the M55 provides a premium experience at a (likely) mid-range price, while the A15 is a very basic entry-level phone with significant compromises. For my personal use case (which includes gaming, photography, video streaming, and productivity tasks), the M55 is the obvious choice.

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.