Samsung Galaxy A02s vs Xiaomi 12 - Detailed Phone Comparison

Detailed Comparison

Specification
Xiaomi 12
Xiaomi 12
Xiaomi

General

Launch Date January 4, 2021 December 31, 2021
Release Year 2021 2021

Physical

Volume 113.41 cm³ 87.52 cm³
Screen Size to Weight Ratio 3.32 "/g 3.51 "/g
Weight 196 g 179 g
Height 164.2 mm 152.7 mm
Width 75.9 mm 69.9 mm
Thickness 9.1 mm 8.2 mm
Foldable Design No No
Available Colors
  • Black
  • Red
  • Blue
  • White
  • Blue
  • Green
  • Purple
  • Gray

Display

Screen Size 6.5 " 6.28 "
Resolution 720 x 1600 1080 x 2400
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 81.8 % 89.2 %
Pixel Density 270 PPI 419 PPI
Refresh Rate N/A 120 Hz
Typical Brightness N/A N/A
HBM Brightness N/A N/A
Peak Brightness N/A 1100 nits

Hardware

Battery Capacity per Screen Area 118.34 mAh/in² 114.10 mAh/in²
Battery Density 44.09 mAh/cm³ 51.41 mAh/cm³
Battery Capacity 5000 mAh 4500 mAh
NFC Support No Yes
Chipset Qualcomm SDM450 Snapdragon 450 (14 nm) Qualcomm SM8450 Snapdragon 8 Gen 1 (4 nm)
CPU Octa-core 1.8 GHz Cortex-A53 Octa-core (1x3.00 GHz Cortex-X2 & 3x2.50 GHz Cortex-A710 & 4x1.80 GHz Cortex-A510)
GPU Adreno 506 Adreno 730

Connectivity

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

Software

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

Comparison Summary

1. Specifications Comparison

Design

FeatureSamsung Galaxy A02sXiaomi 12Practical Impact
Dimensions164.2 × 75.9 × 9.1 mm152.7 × 69.9 × 8.2 mmThe Xiaomi 12 is noticeably smaller and thinner, making it more pocketable and easier to handle with one hand. The A02s is bulkier.
Weight196g179gXiaomi 12 is lighter, which makes it more comfortable for long periods of usage.
BuildUnknownCorning Gorilla Glass VictusThe Xiaomi 12 has a higher level of screen protection, making it more durable against scratches and minor drops.
FoldableStandardStandardBoth are standard non-folding smartphones.

Display

FeatureSamsung Galaxy A02sXiaomi 12Practical Impact
Size6.5"6.28"The A02s has a slightly larger screen, which may be preferred by some users for media consumption; however, it is also less pixel-dense. The Xiaomi 12 offers a more compact and premium feel.
Resolution720x16001080x2400The Xiaomi 12 has significantly higher resolution, leading to a sharper and more detailed display. Images and text will appear much clearer.
PPI270419Xiaomi 12's higher pixel density results in a far crisper and smoother viewing experience, especially noticeable in text and images.
TechnologyPLS LCDAMOLEDAMOLED offers superior contrast, deeper blacks, and more vibrant colors, resulting in a richer visual experience on the Xiaomi 12. It also offers greater power efficiency when using a dark theme.
Refresh Rate60Hz120HzThe 120Hz refresh rate on the Xiaomi 12 provides smoother scrolling and animations, making the user interface feel more responsive.
Brightness0 nits1100 nitsThe Xiaomi 12 has significantly higher brightness, making it much more readable outdoors in bright sunlight.

Performance

FeatureSamsung Galaxy A02sXiaomi 12Practical Impact
ChipsetQualcomm SDM450 Snapdragon 450 (14 nm)Qualcomm SM8450 Snapdragon 8 Gen 1 (4 nm)The Xiaomi 12 features a much more powerful processor, resulting in significantly faster app loading, smoother multitasking, and much better gaming performance. The A02s is substantially slower.
AnTuTu Score74,8001,150,831The massive score difference confirms the Xiaomi 12 has far superior performance for all tasks and is future-proof.
GPUAdreno 506Adreno 730The Xiaomi 12's GPU offers much better graphics performance for gaming and other graphic-intensive tasks.

Camera

FeatureSamsung Galaxy A02sXiaomi 12Practical Impact
Main Camera Resolution13MP50MPThe Xiaomi 12 captures far more detailed photos due to its significantly higher resolution sensor.
Main Camera Aperturef/1.8f/1.88The Galaxy A02s has a slightly wider aperture which may translate to slightly better low-light performance but not by much due to the vastly superior sensor in the Xiaomi 12.
Main Camera SensorUnknown1/1.56" Sony IMX766The Xiaomi 12's larger sensor will capture more light, resulting in better image quality, especially in low light, and improved dynamic range.
Selfie Camera Resolution5MP32MPXiaomi 12 captures much more detailed selfies due to its significantly higher resolution.
Wide Angle LensNone13MPThe Xiaomi 12 has a wide-angle camera, allowing you to capture more of the scene in a single shot. This is missing on the A02s.
Portrait Mode (depth)2MPNoneThe Galaxy A02s has a dedicated depth sensor for portrait mode. The Xiaomi 12 relies on software for portrait effects which may be of slightly lower quality in some scenarios.
Macro Lens2MP5MPXiaomi 12 offers slightly better macro shots due to the higher resolution.
Video Recording1080p@30fps8K@24fps, 4K@60fpsXiaomi 12 offers much higher video recording capabilities, including 8K resolution and various slow-motion options. It has superior video stabilization compared to the A02s
Camera FeaturesBasicAdvanced (OIS, 8K, 4K, RAW, Night Mode)Xiaomi 12 offers a suite of advanced features and shooting modes for more versatility and better results.
DxOMarkN/AMobile 113The Xiaomi 12 has a respectable score, indicating good overall camera performance. The A02s is not rated.

Battery

FeatureSamsung Galaxy A02sXiaomi 12Practical Impact
Capacity5000mAh4500mAhThe Galaxy A02s has a slightly larger battery, which might translate to slightly longer battery life.
Charging15W Fast Charging67W Fast Charging, 50W Wireless ChargingXiaomi 12 offers substantially faster charging speeds, meaning you can recharge the phone much faster. It also offers wireless charging which the A02s lacks.
Battery FeaturesNon-removableNon-removable, Reverse Charging, Fast Wireless ChargingXiaomi 12 offers reverse charging which can be used to charge other devices or accessories, wireless charging and fast wireless charging capabilities.

Software & Connectivity

FeatureSamsung Galaxy A02sXiaomi 12Practical Impact
OSAndroid 10 (upgradeable to 12)Android 12Xiaomi 12 has a more up-to-date software version with the latest features and security patches. The A02s can be updated to 12 but is launched with an older version.
Wi-Fi802.11b/g/n802.11 a/b/g/n/ac/ax (Wi-Fi 6)The Xiaomi 12 supports faster Wi-Fi standards, offering improved speeds, lower latency, and better performance on modern networks.
Bluetooth4.25.2The Xiaomi 12 has a newer Bluetooth standard, offering better range, higher speeds and more efficient power consumption; additionally supports superior codecs for high quality wireless audio streaming.
GPSGPS, A-GPS, GLONASS, Beidou, GalileoA-GPS, GLONASS, Beidou, QZSS, GPS (L1+L5), GLONASS (L1), BeiDou (B1), Galileo (E1+E5a), BeiDou (B2), NavIC System, QZSS (L1 + L5)The Xiaomi 12 supports more satellite systems for greater accuracy and reliability in location tracking.
SIMDual SIM (Nano SIM)Dual SIM (Nano SIM)Both devices offer dual SIM capabilities.

Storage & Audio

FeatureSamsung Galaxy A02sXiaomi 12Practical Impact
Internal Storage32GB or 64GB128GB or 256GBXiaomi 12 offers substantially more storage space, which is beneficial for users who store many apps, photos, and videos.
RAM3GB or 4GB8GB or 12GBThe Xiaomi 12 has more RAM, leading to better multitasking and smoother app performance, especially when running demanding applications.
Expandable StorageNoNoNeither phone supports expandable storage.
Audio QualityBasic audio featuresDolby Atmos, Hi-Res Audio, Stereo SpeakersXiaomi 12 offers far superior audio quality, with enhanced spatial audio and better speaker performance for a more immersive audio experience.

Security & Sensors

FeatureSamsung Galaxy A02sXiaomi 12Practical Impact
Security FeaturesBasic security featuresFingerprint sensorXiaomi 12 provides additional fingerprint biometric security, a feature missing in the A02s.
SensorsProximity, AccelerometerFingerprint, Accelerometer, Compass, Gyroscope, Ultrasonic ProximityXiaomi 12 features more advanced sensors, enabling additional functionalities like advanced motion tracking, gaming, and virtual reality.

2. Key Differences Analysis

Samsung Galaxy A02s Advantages

  • Slightly Larger Battery: Its 5000mAh battery offers a bit more capacity, which may translate to slightly longer battery life, though this is offset by the more efficient chipset of the Xiaomi 12.
  • Slightly Wider Main Camera Aperture: A slightly wider aperture on the main camera may offer a negligible advantage in certain low-light scenarios, however the overall camera quality is far inferior due to its lower resolution and lack of advanced features.
  • Lower Price: As an older and more basic model the A02s is available at a much lower price.

Practical Implications: The A02s excels only in battery life (potentially) and a lower price point but is vastly outclassed in all other aspects. Its slightly larger display comes at the cost of a far inferior resolution and display quality.

Xiaomi 12 Advantages

  • Superior Performance: Its Snapdragon 8 Gen 1 chipset delivers vastly superior processing and graphics performance, leading to faster app loading, smoother multitasking, and better gaming.
  • Far Superior Display: The AMOLED screen with 120Hz refresh rate offers vibrant colors, deep blacks, smoother animations, and a much sharper image with much better brightness for outdoor use.
  • Superior Camera System: The 50MP main camera, wide-angle lens, and advanced video capabilities (8K recording, OIS) offer far better photo and video quality.
  • Faster Charging: The 67W fast charging and 50W wireless charging allows for significantly quicker battery top-ups.
  • Enhanced Audio: The stereo speakers, Dolby Atmos support, and Hi-Res audio provide an immersive audio experience.
  • More Storage and RAM: More internal storage and RAM provides a smoother experience and more room for all your files, videos, and apps.
  • More Advanced Connectivity: Supports newer Wi-Fi and Bluetooth standards for better connectivity.

Practical Implications: The Xiaomi 12 offers a premium experience in all aspects, including performance, display, camera, and connectivity. It's designed for users who demand the best from their smartphone.

Significant Trade-offs

  • Samsung Galaxy A02s: The main trade-off is the severely limited performance, poor display, and basic camera capabilities for a lower cost and slightly larger battery.
  • Xiaomi 12: The primary trade-off is its significantly higher price tag and a smaller battery capacity compared to the A02s, though the battery life is not necessarily worse due to more efficient components.

3. User Profiles & Recommendations

Ideal Users for Samsung Galaxy A02s

  • Budget-Conscious Users: Users who prioritize affordability above all else.
  • Basic Smartphone Users: Individuals who primarily use their phones for calling, texting, and very basic social media.
  • Users Needing a Long Battery: Users who prioritize battery life and are not concerned about performance or camera quality.

Use Cases:

  • Making phone calls and sending text messages.
  • Basic web browsing and social media.
  • Simple gaming or app usage.

Ideal Users for Xiaomi 12

  • Performance Enthusiasts: Users who demand smooth performance for gaming and other demanding tasks.
  • Photography and Videography Enthusiasts: Users who need a high-quality camera for capturing photos and videos.
  • Multimedia Consumers: Users who enjoy watching high-resolution videos and playing games.
  • Power Users: Individuals who utilize their smartphone extensively for various purposes and need fast charging and good quality speakers.

Use Cases:

  • Playing graphically intensive games.
  • Recording high-resolution videos and taking professional-quality photos.
  • Enjoying movies and other multimedia content with a superior display and audio.
  • Multitasking between demanding apps.
  • Using as a mobile office tool.

Price-to-Value Ratio

  • Samsung Galaxy A02s: Offers a low entry price but with a heavily compromised experience. The value is relatively poor considering the performance and quality shortcomings, unless the user has no need for a better phone.
  • Xiaomi 12: Offers high value for its price, considering the premium features and performance. However, its price tag is significantly higher.

4. Decision Framework

Key Questions for Buyers

  1. What is your budget? If budget is the primary constraint, the Samsung Galaxy A02s may be the only choice, despite its compromises.
  2. What is your primary use case? If you mostly call/text, use social media occasionally and need very long battery life the A02s may be acceptable. For anything more, the Xiaomi 12 is the obvious choice.
  3. How important is performance, camera quality, and display? If these are not important and battery life is more of a priority than the A02s is a better choice. If these are important at all, then the Xiaomi 12 is the better option.

Scenario-Based Recommendations

  • Scenario 1: Budget is extremely tight - Recommendation: Samsung Galaxy A02s, recognizing its severe limitations but acknowledging that its cost is significantly lower.

  • Scenario 2: Everyday use with occasional media consumption - Recommendation: Xiaomi 12 as it offers much better performance, display and camera while having faster charging and superior speakers.

  • Scenario 3: Frequent traveler or power user - Recommendation: Xiaomi 12, due to its much better performance, high quality camera, 67W fast charging, and superior display for media consumption and working.

My Choice and Explanation

I would choose the Xiaomi 12 without hesitation. While the A02s offers a lower price point and potentially slightly longer battery life, the user experience compromises are too significant. The vastly superior performance, stunning display, excellent camera system, and rapid charging of the Xiaomi 12 make it a much better all-around device. I value a smooth, responsive user experience, high-quality multimedia, and the ability to take excellent photos and videos, and the Xiaomi 12 delivers on all of these. The A02s would feel sluggish and outdated very quickly and only offers a lower price. The added expense of the Xiaomi 12 is justifiable considering the substantial improvements in functionality and enjoyment.

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
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Bridging technical complexity with engaging, accessible narratives.