Samsung Galaxy A02 vs Xiaomi Redmi 12 5G - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date January 27, 2021 August 4, 2023
Release Year 2021 2023

Physical

Volume 113.27 cm³ 105.49 cm³
Screen Size to Weight Ratio 3.16 "/g 3.41 "/g
Weight 206 g 199 g
Height 164 mm 168.6 mm
Width 75.9 mm 76.3 mm
Thickness 9.1 mm 8.2 mm
Foldable Design No No
Available Colors
  • Black
  • Blue
  • Moonstone Silver
  • Jade Black
  • Pastel Blue

Display

Screen Size 6.5 " 6.79 "
Resolution 720 x 1600 1080 x 2460
Aspect Ratio 20:9 21:9
Screen-to-Body Ratio 81.9 % 85.1 %
Pixel Density 270 PPI 396 PPI
Refresh Rate N/A 90 Hz
Typical Brightness N/A 550 nits
HBM Brightness N/A N/A
Peak Brightness N/A N/A

Hardware

Battery Capacity per Screen Area 118.34 mAh/in² 108.45 mAh/in²
Battery Density 44.14 mAh/cm³ 47.4 mAh/cm³
Battery Capacity 5000 mAh 5000 mAh
NFC Support No No
Chipset Mediatek MT6739W (28 nm) Qualcomm SM4450 Snapdragon 4 Gen 2 (4 nm)
CPU Quad-core 1.5 GHz Cortex-A53 Octa-core (2x2.2 GHz Cortex-A78 & 6x1.95 GHz Cortex-A55)
GPU PowerVR GE8100 Adreno 613

Connectivity

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

Software

Operating System Android Android
Initial OS Version 10 13
Maximum OS Version 11 14

Comparison Summary

1. Specifications Comparison

FeatureSamsung Galaxy A02Xiaomi Redmi 12 5GPractical Impact
Design
Dimensions164 x 75.9 x 9.1 mm168.6 x 76.3 x 8.2 mmRedmi 12 5G is slightly taller and thinner, A02 is more compact but thicker, both handle similar.
Weight206g199gRedmi 12 5G is negligibly lighter, makes a small difference in long use sessions.
Display
Size6.5"6.79"Redmi 12 5G offers a slightly larger viewing area, better for media consumption and gaming.
Resolution720x16001080x2460Redmi 12 5G has a much sharper display, resulting in clearer text and images, and better media experience.
Pixel Density270 PPI396 PPIRedmi 12 5G provides noticeably clearer images and text compared to A02's slightly blurred and lower quality screen.
TechnologyPLS LCDIPS LCDRedmi 12 5G provides better viewing angles and color accuracy.
Refresh Rate60Hz90HzRedmi 12 5G has smoother scrolling and animations, making the user experience feel more fluid.
Brightness0 nits0 nitsBoth phones have identical peak brightness at 0 nits. Display visibility on sunny days cannot be determined.
Performance
ChipsetMediatek MT6739W (28 nm)Qualcomm Snapdragon 4 Gen 2 (4 nm)Redmi 12 5G has a significantly more powerful and efficient processor, resulting in faster app loading, smoother multitasking, and better gaming.
AnTuTu Score50,774456,552Redmi 12 5G offers dramatically better performance for everyday use and more demanding tasks, like gaming or running complex apps.
GPUPowerVR GE8100Adreno 613Redmi 12 5G's GPU handles graphics-intensive tasks such as gaming far better than A02.
Camera
Main Camera13MP, f/1.950MP, f/1.8Redmi 12 5G captures much more detailed images in good lighting conditions due to a higher resolution sensor and slightly wider aperture.
Selfie Camera5MP, f/2.05MP, f/2.2A02 might capture slightly brighter images in low light due to the slightly wider aperture, though the difference is minor.
Depth SensorNone2MP, f/2.4Redmi 12 5G can take portrait photos with better background blur effect.
Macro Lens2MP, f/2.4NoneA02 can capture close-up images with its dedicated Macro lens, although low resolution.
Video Recording1080p@30fps, No stabilization, No slow-mo1080p@30fps, Yes stabilization, Yes slow-moRedmi 12 5G records smoother videos, thanks to digital image stabilization and has more video features.
DxOMark ScoreNot testedOverall 63 (Photo 57, Video 76)Redmi 12 5G has a benchmark, the camera performs adequately with video better than photo.
Camera FeaturesDigital zoom, Dual camera, Autofocus, Touch focus, Continuous shooting, Geotagging, Panorama, HDR, Face detection, White balance settings, ISO settings, Exposure compensation, Scene mode, Self-timerDigital zoom, Dual camera, Digital image stabilization, Optical Stabilization (OIS), Autofocus, Touch focus, Phase detection autofocus (PDAF), Geotagging, Panorama, HDR, Face detection, White balance settings, ISO settings, Exposure compensation, Scene mode, Self-timerRedmi 12 5G offers advanced features such as Optical image stabilization (OIS) and Phase detection autofocus (PDAF), resulting in better quality photos and video.
Battery
Capacity5000mAh5000mAhBoth phones have similar battery life, should last a full day for most users with moderate use.
Charging7.5W, Li-Ion18W, Li-PolymerRedmi 12 5G charges much faster, which is more convenient for users on the go.
Software
Operating SystemAndroid 10 (up to 11)Android 13 (up to 14)Redmi 12 5G has a newer operating system version, meaning access to updated software, security and features.
Connectivity
Wi-Fi802.11b/g/n802.11a/b/g/n/acRedmi 12 5G provides faster and more reliable Wi-Fi connections due to support for newer protocols like Wi-Fi 5 (ac) and dual-band support.
Bluetooth4.2 LE5.0 LERedmi 12 5G offers improved connection speed and range with its updated Bluetooth version, enabling more stable connections to accessories.
GPSGPS, A-GPS, GLONASSGPS, A-GPS, GLONASS, BeidouRedmi 12 5G has better location accuracy due to the added Beidou satellite system support.
SIMDual SIM, Dual Standby (Nano SIM + Nano SIM)Dual SIM, Dual Standby (Nano SIM + Nano SIM)Both devices offer dual SIM functionality, allowing use of two lines at the same time.
Storage
Internal Storage32GB or 64GB128GB or 256GBRedmi 12 5G offers much more storage, better for saving media, installing apps, etc.
RAM2GB or 3GB or 4GB4GB or 6GB or 8GBRedmi 12 5G has more RAM, better for multitasking.
Expandable StorageNoNoNeither device offers storage expansion, relying on the built-in storage.
Audio
QualityDolby AtmosBasicA02 offers slightly better audio experience through Dolby Atmos support for enhanced spatial sound.
Security
FeaturesBasic securitySide-mounted fingerprint sensorRedmi 12 5G has more secure and convenient biometric security through its fingerprint reader.
Build Quality
Screen ProtectionUnknownCorning Gorilla Glass 3Redmi 12 5G has better screen protection due to Gorilla Glass 3, reducing the chance of damage from drops or scratches.
Sensors
SensorsProximity, AccelerometerFingerprint, Accelerometer, Compass, Ultrasonic Proximity VirtualRedmi 12 5G provides a more complete set of sensor for broader range of uses

2. Key Differences Analysis

Samsung Galaxy A02 Advantages:

  • Dolby Atmos Audio: Offers a slightly more immersive audio experience via software enhancement for users who listen to music or watch videos directly from the phone.
  • Macro Lens: Provides a dedicated lens for capturing close-up images, which can be useful for users interested in detailed photography at a very close range.
  • Slightly Wider Selfie Camera Aperture: May perform slightly better in low-light selfie situations.

Practical Implications for Samsung Galaxy A02:

The Samsung Galaxy A02 is designed for basic users and light usage. Its main strengths are its focus on audio and the macro lens for close-up photos which may be important for certain types of users. The hardware is not powerful and software is older, making it a budget-first device.

Xiaomi Redmi 12 5G Advantages:

  • Superior Performance: The Snapdragon 4 Gen 2 chipset provides significantly better processing power and graphics performance, for better overall speed and usability.
  • Sharper, Smoother Display: Higher resolution, pixel density, and a 90Hz refresh rate results in a better visual experience, which is important for anyone viewing videos and playing games.
  • Significantly Better Camera: Higher resolution main sensor, dedicated depth camera, digital image stabilization, and OIS allow for better quality images and videos.
  • Faster Charging: 18W charging allows for a faster charge time reducing time spent plugged in.
  • Modern Software: Ships with a much newer Android version with feature and security updates.
  • More Storage and RAM: Significantly more built-in storage and RAM for smoother performance and greater capacity for media and apps.
  • Better Connectivity: Supports newer and faster Wi-Fi protocols and Bluetooth for improved performance.
  • Fingerprint Sensor: Offers a convenient and secure way to unlock the device and authenticate payments.
  • Better Build Quality: Corning Gorilla Glass 3 provides screen protection, reducing the chance of screen damage.

Practical Implications for Xiaomi Redmi 12 5G:

The Xiaomi Redmi 12 5G is a mid-range phone that provides more performance, better camera quality, updated software, and modern features. It is the more complete option for most users. It's better for media consumption, general usage, and anyone seeking a responsive device.

Significant Trade-offs:

  • Samsung Galaxy A02: The A02 has significantly inferior processing power, older software, smaller storage and ram, and less impressive camera capabilities.
  • Xiaomi Redmi 12 5G: While having considerable advantages, does lack a dedicated macro camera lens which can be useful for some users, which the A02 does include. The A02 has Dolby Atmos support which the Redmi 12 5G doesn't.

3. User Profiles & Recommendations

Samsung Galaxy A02 Ideal User:

  • Budget-Conscious Users: Users who have a very strict budget and prioritize affordability above all else, and would use the device for very basic usage.
  • Users with Basic Needs: Users who only need basic functionality, like making calls, sending texts, and very light web browsing, and prioritize a simple device with lower demands.
  • Users who need Macro camera: For those that need the option of close-up photography, the A02 offers this, which the Redmi 12 5G doesn't.

Samsung Galaxy A02 Use Cases:

  • A secondary phone for basic communications.
  • A phone for someone who only uses the phone for very basic tasks.
  • A phone where Dolby Atmos audio is more important than performance.

Xiaomi Redmi 12 5G Ideal User:

  • Value-Oriented Users: Users who are looking for a phone with a good balance of features and performance at a reasonable price.
  • Media Consumers: Users who regularly watch videos, browse social media, and play casual games.
  • Everyday Users: Users who need a reliable phone for daily tasks like email, navigation, and light productivity, while also wanting faster performance.
  • Camera-Focused Users: Users who take photos and videos on a regular basis and would benefit from the superior camera system.
  • Performance Seekers: Users who want a faster, smoother experience for all their applications.

Xiaomi Redmi 12 5G Use Cases:

  • A primary phone for everyday use.
  • Media consumption, such as watching videos and movies.
  • Casual gaming.
  • Capturing photos and videos for social media and sharing.
  • Web browsing, email, and other productivity tasks.

Price-to-Value Ratio:

  • The Xiaomi Redmi 12 5G offers a significantly better price-to-value ratio due to its greatly enhanced performance, display, camera, and features, which would easily justify a higher cost.
  • The Samsung Galaxy A02 is only suitable for those who have the lowest budget and cannot afford more, with the understanding they'd be sacrificing a lot of features and capabilities.

4. Decision Framework

Key Questions for Buyers:

  1. What is my budget? (If the budget is very limited, the A02 is an option; but otherwise, the Redmi 12 5G offers much more value)
  2. How important is performance to me? (The Redmi 12 5G delivers superior speed and responsiveness. If performance isn't important, then the A02 may be considered)
  3. What kind of media usage do I have? (The Redmi 12 5G has a better display, camera and faster software. If only doing basic media consumption, then the A02 could be considered, but is not preferred)

Scenario-Based Recommendations:

  • Scenario 1: Budget is the absolute priority. If budget is extremely tight, the Samsung Galaxy A02 is the only option to consider, but should be recognized it's an older device that will perform much slower and have lower quality images and display.
  • Scenario 2: Balance of value and performance. If the user wants a reliable phone for everyday tasks, with better display, and better camera quality for content consumption, and is willing to spend a bit more, the Xiaomi Redmi 12 5G is the better option, for a much more positive and fluid experience.
  • Scenario 3: Specific photography requirement If close up macro-photography is a strict requirement, the A02 provides that functionality, however it will be lower in quality compared to the Redmi 12 5G, but the A02 will lack most other useful features of the other device.

Personal Recommendation

Given the substantial differences, I would choose the Xiaomi Redmi 12 5G. Its superior performance, display quality, camera capabilities, faster charging, newer software, and enhanced features provide a much better overall user experience. While the Samsung Galaxy A02 has a lower price tag, it is not worthwhile due to its old software, very slow performance, and lack of features. The Redmi 12 5G is a more modern phone with better value. The significantly improved performance of the Xiaomi will be much better for any form of usage, and the superior display, camera and other modern features mean it is the better option for nearly all users.

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
  • Digital media communication
  • Technical storytelling
  • User-centric technology insights

Bridging technical complexity with engaging, accessible narratives.