Oppo Reno5 5G vs Samsung Galaxy A02 - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date January 7, 2021 January 27, 2021
Release Year 2021 2021

Physical

Volume 92.26 cm³ 113.27 cm³
Screen Size to Weight Ratio 3.74 "/g 3.16 "/g
Weight 172 g 206 g
Height 159.1 mm 164 mm
Width 73.4 mm 75.9 mm
Thickness 7.9 mm 9.1 mm
Foldable Design No No
Available Colors
  • Starry Black
  • Galactic Silver
  • Azure Blue
  • Black
  • Blue

Display

Screen Size 6.43 " 6.5 "
Resolution 1080 x 2400 720 x 1600
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 85.5 % 81.9 %
Pixel Density 409 PPI 270 PPI
Refresh Rate 90 Hz N/A
Typical Brightness 430 nits N/A
HBM Brightness N/A N/A
Peak Brightness 750 nits N/A

Hardware

Battery Capacity per Screen Area 104.00 mAh/in² 118.34 mAh/in²
Battery Density 46.61 mAh/cm³ 44.14 mAh/cm³
Battery Capacity 4300 mAh 5000 mAh
NFC Support Yes No
Chipset Qualcomm SM7250 Snapdragon 765G 5G (7 nm) Mediatek MT6739W (28 nm)
CPU Octa-core (1x2.4 GHz Kryo 475 Prime & 1x2.2 GHz Kryo 475 Gold & 6x1.8 GHz Kryo 475 Silver) Quad-core 1.5 GHz Cortex-A53
GPU Adreno 620 PowerVR GE8100

Connectivity

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

Software

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

Comparison Summary

1. Specifications Comparison

Design

FeatureOppo Reno5 5GSamsung Galaxy A02Practical Impact
Dimensions159.1 × 73.4 × 7.9 mm164 × 75.9 × 9.1 mmReno5 5G is more compact and easier to handle one-handed. A02 is bulkier, may be less comfortable for smaller hands
Weight172g206gReno5 5G feels lighter, better for prolonged use. A02 is noticeably heavier.

Display

FeatureOppo Reno5 5GSamsung Galaxy A02Practical Impact
Size6.43"6.5"Negligible difference in screen size.
Resolution1080x2400720x1600Reno5 5G has a sharper display with much more detail and text clarity. A02 will appear pixelated.
PPI409270Reno5 5G has much higher pixel density leading to a clearer image. A02 will look less sharp.
TechnologyAMOLEDPLS LCDReno5 5G offers better contrast, deeper blacks, more vibrant colors, and better power efficiency. A02 is a basic LCD display.
Refresh Rate90Hz60HzReno5 5G will have smoother animations and scrolling. A02 may appear less fluid.
Brightness750 nits0 nitsReno5 5G is significantly brighter, making it easier to view in direct sunlight. The A02's brightness is unknown and this is a major issue.

Performance

FeatureOppo Reno5 5GSamsung Galaxy A02Practical Impact
ChipsetQualcomm Snapdragon 765G (7 nm)Mediatek MT6739W (28 nm)Reno5 5G is significantly faster, smoother for everyday tasks, gaming and multitasking. A02 is much slower and may struggle with demanding apps.
AnTuTu Score325,00050,774Reno5 5G performs much better, handles demanding apps/games with ease and is future proof. A02 will show lag for demanding tasks, is a budget choice.
GPUAdreno 620PowerVR GE8100Reno5 5G has a significantly more powerful GPU for better graphics in gaming. The A02 will struggle with more demanding games.

Camera

FeatureOppo Reno5 5GSamsung Galaxy A02Practical Impact
Main Camera64MP, f/1.7, 1/1.7", Sony IMX686, 0.80µm pixels13MP, f/1.9, Unknown Sensor, 1.12µm pixelsReno5 5G captures much more detailed photos, performs better in low light, has a larger sensor. A02 will produce lower-resolution and less detailed images.
Selfie Camera32MP, f/2.4, Unknown Sensor, 0.80µm pixels5MP, f/2.0, Unknown Sensor, Unknown pixel sizeReno5 5G takes much higher resolution and detailed selfies, suitable for social media. A02 will take low-resolution selfies with limited detail.
Macro Lens2MP, f/2.4, Unknown Sensor, Unknown pixel size2MP, f/2.4, Unknown Sensor, Unknown pixel sizeComparable macro capabilities on both phones.
Wide Angle + Macro8MP, f/2.2, Unknown Sensor, 1.12µm pixelsNot AvailableReno5 5G offers more versatile shooting with a wide-angle lens, A02 does not offer this option.
Video4K@30fps, 1080p@30/60/120fps, HDR, EIS, Slow-mo1080p@30fps, No EIS, No Slow-moReno5 5G offers much higher resolution video recording with more advanced options like HDR, EIS and high frame rate slow motion. The A02 offers basic video recording only.

Battery

FeatureOppo Reno5 5GSamsung Galaxy A02Practical Impact
Capacity4300mAh5000mAhA02 has a larger battery, potentially offering longer battery life.
Charging65W Fast Charging, Li-Polymer7.5W Fast Charging, Li-IonReno5 5G charges much faster, reducing waiting time. A02 charges much slower.
FeaturesReverse Charging, Non-removable, 2100mAh Dual-cellNon-removableReno5 5G can charge other devices, has a dual cell battery. A02 has a basic battery system.

2. Key Differences Analysis

Oppo Reno5 5G Advantages:

  • Superior Display: AMOLED, 90Hz refresh rate, higher resolution, much better brightness
  • Much Better Performance: Snapdragon 765G chipset is significantly faster than the MT6739W
  • Better Camera System: Much higher resolution main and selfie cameras, wide-angle lens, 4K video, more features
  • Faster Charging: 65W vs 7.5W charging
  • Better Connectivity: Newer Wi-Fi and Bluetooth standards, more GPS systems
  • More Features: Fingerprint sensor, Stereo speakers

Samsung Galaxy A02 Advantages:

  • Larger Battery: 5000mAh vs 4300mAh, potentially longer battery life, but this is hard to determine due to the unknown display brightness
  • Lower price: The A02 is designed to be a budget device, however, it sacrifices nearly all performance and image quality for a lower price.

Trade-offs:

  • Reno5 5G has a smaller battery, but fast charging mitigates this
  • A02 has a much lower price, but this results in very poor performance, limited cameras and significantly worse display.

3. User Profiles & Recommendations

Oppo Reno5 5G:

  • Ideal Users: Users who value performance, a good display and better camera quality. Gamers, social media enthusiasts, photographers and users who watch a lot of video will prefer this.
  • Use Cases: Mobile gaming, high-quality video recording, content creation, social media, and power users needing fast performance
  • Price-to-Value: Provides excellent value with its high performance, display, camera quality and features

Samsung Galaxy A02:

  • Ideal Users: Budget-conscious users with very basic smartphone needs, or those looking for a secondary device with a long battery life
  • Use Cases: Basic calling/texting, simple browsing, media consumption with limited quality, users who prioritize battery life above all else
  • Price-to-Value: Very affordable but makes significant sacrifices in performance, display and camera quality.

4. Decision Framework

Key Questions:

  1. What is your budget?
  2. How important are display quality and performance to you?
  3. What do you mostly use your phone for?

Scenario-Based Recommendations:

  • Scenario 1: Budget-conscious, basic usage:
    • Recommendation: Samsung Galaxy A02 if only calls and messaging are required and a very low price is the primary concern.
  • Scenario 2: Content creation, social media, gaming, high-performance:
    • Recommendation: Oppo Reno5 5G due to its excellent display, performance, camera and features.
  • Scenario 3: Balanced use with a focus on performance:
    • Recommendation: Oppo Reno5 5G due to its fast processor, better camera, and display.

My Choice

I would choose the Oppo Reno5 5G. While the Samsung Galaxy A02 has a larger battery and a lower price, the Oppo Reno5 5G offers a superior user experience in nearly every other area. The much better display (AMOLED, 90Hz, high resolution, high brightness) is a huge advantage for daily usage. The performance difference between the Snapdragon 765G and the Mediatek MT6739W is substantial, meaning the Reno5 5G will provide a much smoother and more responsive experience. The camera system on the Reno5 5G is also far superior, with much higher resolution, more versatile options and significantly better video recording capabilities. Finally, the 65W fast charging means the smaller battery is less of a concern, and the inclusion of features like a fingerprint sensor and stereo speakers make it a more complete device. The A02 is simply too low-spec to be considered for any kind of use other than basic calls and messages. Therefore, the Oppo Reno5 5G is a much better all-around device and will provide a much more enjoyable user experience despite a higher price.

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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