Xiaomi Poco M3 vs Samsung Galaxy A55 - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date November 27, 2020 March 15, 2024
Release Year 2020 2024

Physical

Volume 120.44 cm³ 102.25 cm³
Screen Size to Weight Ratio 3.3 "/g 3.1 "/g
Weight 198 g 213 g
Height 162.3 mm 161.1 mm
Width 77.3 mm 77.4 mm
Thickness 9.6 mm 8.2 mm
Foldable Design No No
Available Colors
  • Cool Blue
  • Poco Yellow
  • Power Black
  • Navy
  • Iceblue
  • Lilac
  • Lemon

Display

Screen Size 6.53 " 6.6 "
Resolution 1080 x 2340 1080 x 2340
Aspect Ratio 19.5:9 19.5:9
Screen-to-Body Ratio 83.4 % 85.8 %
Pixel Density 395 PPI 390 PPI
Refresh Rate N/A 120 Hz
Typical Brightness 400 nits N/A
HBM Brightness N/A 1000 nits
Peak Brightness N/A N/A

Hardware

Battery Capacity per Screen Area 140.71 mAh/in² 114.78 mAh/in²
Battery Density 49.82 mAh/cm³ 48.9 mAh/cm³
Battery Capacity 6000 mAh 5000 mAh
NFC Support No Yes
Chipset Qualcomm SM6115 Snapdragon 662 (11 nm) Exynos 1480 (4 nm)
CPU Octa-core (4x2.0 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver) Octa-core (4x2.75 GHz Cortex-A78 & 4x2.0 GHz Cortex-A55)
GPU Adreno 610 Xclipse 530

Connectivity

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

Software

Operating System Android Android
Initial OS Version 10 14
Maximum OS Version 18

Comparison Summary

1. Specifications Comparison

Here's a detailed comparison of the Xiaomi Poco M3 and Samsung Galaxy A55, focusing on practical user experience:

Design

FeatureXiaomi Poco M3Samsung Galaxy A55Practical Impact
Dimensions162.3 x 77.3 x 9.6 mm161.1 x 77.4 x 8.2 mmPoco M3 is slightly taller and noticeably thicker, feeling bulkier in hand. A55 is slimmer and more pocketable.
Weight198g213gPoco M3 is lighter, making it more comfortable for prolonged use. A55 feels more substantial due to its materials and weight.
BuildPlastic BackGlass Back and Aluminum FrameA55 feels more premium and is more robust than M3's plastic build

Display

FeatureXiaomi Poco M3Samsung Galaxy A55Practical Impact
Size6.53"6.6"Negligible size difference; both offer a large viewing experience.
Resolution1080x23401080x2340Identical sharpness; both offer a clear and detailed display.
PPI395390Negligible difference in pixel density, both very similar levels of sharpness
TechnologyIPS LCDAMOLEDA55 provides much richer colors, deeper blacks, and superior contrast compared to the Poco M3's LCD, making content much more vibrant and enjoyable. Better for viewing media, gaming and readability in sunlight.
Refresh Rate60Hz120HzA55 offers smoother scrolling and animations, improving the overall user experience, and is more responsive.
Brightness0 nits0 nitsUnable to compare brightness as the values are unavailable.

Performance

FeatureXiaomi Poco M3Samsung Galaxy A55Practical Impact
ChipsetQualcomm Snapdragon 662 (11 nm)Exynos 1480 (4 nm)A55 offers vastly superior performance. Faster app loading, smoother multitasking, better gaming, and is more future-proof, whereas M3 might struggle with demanding apps and games.
AnTuTu Score185,028713,393A55 is significantly faster, performing almost 4x the performance. This translates to drastically smoother experience in all use-cases.
GPUAdreno 610Xclipse 530A55 provides better graphical performance for gaming and graphically demanding apps, while M3 will show visual issues and lag in such scenarios.

Camera

FeatureXiaomi Poco M3Samsung Galaxy A55Practical Impact
Main Camera Resolution48MP (f/1.79, 1/2")50MP (f/1.8, 1/1.56")A55 captures slightly more detailed images and has a larger sensor, resulting in better low-light performance. The M3 has a slightly wider aperture, which could offer minimal light capturing benefits.
Selfie Camera Resolution8MP (f/2.0, 1/4")32MP (f/2.2, 1/2.8")A55 captures significantly sharper selfies with more detail due to the significantly higher resolution and larger sensor.
Wide Angle LensNot Available13MP (f/2.2, 1/3.06")A55 offers greater versatility with the inclusion of a wide angle lens for expansive shots. M3 lacks a wide angle option.
Macro LensNot Available5MP (f/2.4)A55 allows for close-up macro photography, while M3 does not offer the same option.
Video Recording1080p@30fps4K@30fps, 1080p@60fpsA55 can record much higher resolution videos and at a higher frame rate, offering better detail and more fluid motion than M3.
Video StabilizationNoEIS, OISA55 offers significantly more stable video capture, making it better for handheld video recording, whereas M3 lacks video stabilization.
Camera FeaturesDigital Zoom, Triple Camera, Autofocus, Manual Focus, Standard Camera features2x2 OCL, Pro Video Mode, 4K Video, OIS, Ultra Stable Video, AutoFraming, All Pixel Omni- Directional PDAF, NPU AI Engine, Standard Camera features, Night Mode, RAW 12 bits, DOL HDRA55 has an expansive list of superior camera features making it the better option for advanced users, and in general. M3's camera features are very limited.
DxOMark ScoreNot AvailableOverall: 108, Photo: 110, Video: 117A55 has been officially tested and rated, with a significant result indicating a superior camera. M3 is not rated.

Battery

FeatureXiaomi Poco M3Samsung Galaxy A55Practical Impact
Capacity6000mAh5000mAhPoco M3 has a larger battery, potentially leading to longer battery life. However, actual battery life depends on usage and software optimization.
Charging18W25WA55 charges faster, reducing charging times despite its slightly smaller battery.
FeaturesReverse Charging, 22.5W Charger IncludedNonePoco M3 can charge other devices, adding some versatility, and includes a faster charger, while A55 does not include a charger, and has no reverse charging capabilities.

Software & Connectivity

FeatureXiaomi Poco M3Samsung Galaxy A55Practical Impact
OSAndroid 10Android 14A55 has the latest software and access to newer features, and a guaranteed update to Android 18, while M3 will not be receiving any software updates, offering an outdated experience.
WiFi802.11ac802.11ax (Wi-Fi 6)A55 offers faster WiFi speeds and better performance in congested networks.
Bluetooth5.05.3A55 has more advanced Bluetooth capabilities, with support for more modern audio codecs like aptX, LDAC, and aptX Adaptive.
GPSGPS, A-GPS, GLONASS, Beidou, Galileo, NavICGPS, A-GPS, GLONASS, Beidou, QZSS, GalileoA55 has access to additional location services.
SIMDual SIM (Nano)Dual SIM (Nano/eSIM)A55 offers the flexibility of using an eSIM, which may be beneficial for traveling or using multiple carriers.

Storage & Audio

FeatureXiaomi Poco M3Samsung Galaxy A55Practical Impact
Internal Storage64GB/128GB128GB/256GBA55 has much more storage options, allowing for more photos, videos and apps.
RAM4GB/6GB8GB/12GBA55 offers much smoother multitasking and better performance in demanding applications, and is less likely to have performance issues due to RAM bottlenecks
Expandable StorageNoNoBoth phones do not support expandable storage
Audio QualityHi-Res Audio, Stereo SpeakersDolby Atmos, Hi-Res Audio, Stereo SpeakersA55 has slightly better audio with the addition of Dolby Atmos, resulting in a better, more immersive audio experience, and enhanced spatial audio.

Security & Build

FeatureXiaomi Poco M3Samsung Galaxy A55Practical Impact
SecuritySide-mounted fingerprint sensorBasic fingerprint sensorBoth offer fingerprint security, M3 offering a side mounted option.
Screen ProtectionCorning Gorilla Glass 3Corning Gorilla Glass VictusA55 has much more durable screen protection against scratches and damage.
SensorsFingerprint, Accelerometer, Compass, ProximityFingerprint, Accelerometer, Compass, Gyroscope, Barometer, Proximity, GeomagneticA55 has access to additional sensors, offering greater use cases.

2. Key Differences Analysis

Xiaomi Poco M3 Advantages:

  • Larger Battery: Its 6000mAh battery can offer longer usage on a single charge.
  • Lighter Build: Its lighter weight can be more comfortable for extended use.
  • Reverse Charging: Can charge other devices, a handy feature for emergencies.
  • 22.5W Fast Charger in box: The phone will charge faster out of the box.
  • Side-mounted Fingerprint Sensor Some users may prefer the side-mounted approach to the under-display sensor.

Samsung Galaxy A55 Advantages:

  • Superior Display: AMOLED screen with 120Hz refresh rate for vibrant visuals and smooth interactions.
  • Significantly Faster Performance: Exynos 1480 chipset provides much better overall performance.
  • Better Cameras: Higher resolution sensors, wide angle lens, macro lens, 4K video recording with OIS
  • More Storage/RAM: Higher storage and RAM capacity for more files and improved multitasking.
  • Modern Software: Comes with Android 14, and will be updated to Android 18, offering the latest features and security patches.
  • Superior Connectivity: Newer WiFi and Bluetooth standards for faster connections and better range, with eSIM capabilities.
  • Premium Build: Glass back and aluminum frame provides a more premium feel and much better durability.
  • Better Audio Dolby Atmos gives the phone superior audio capabilities.
  • Superior Screen Protection: Corning Gorilla Glass Victus offers significantly better screen protection.
  • Comprehensive Sensor Suite: It has a wider range of sensors, offering more capabilities for advanced features.

Trade-offs:

  • Xiaomi Poco M3: Sacrifices display quality, performance, and camera quality for better battery life, lighter weight, and a lower price.
  • Samsung Galaxy A55: Lacks a charger included in the box, and reverse charging capabilities, and has a smaller battery, but offers a vastly superior performance and experience for all other use cases.

3. User Profiles & Recommendations

Xiaomi Poco M3 Ideal User:

  • Budget-Conscious User: Prioritizes affordability and battery life over performance and display quality.
  • Basic Smartphone User: Primarily uses the phone for calls, texts, social media, and casual browsing.
  • Users Needing Long Battery Life: Those who are frequently away from power sources, the bigger battery will make the phone last longer.
  • Users that want a lighter phone: If weight is a concern, then this will be the preferable device.

    Use Cases:

    • Extended use for media consumption while travelling without frequent charging.
    • A secondary phone with long battery backup.
    • Basic smartphone tasks for users with limited needs.

Samsung Galaxy A55 Ideal User:

  • Performance-Oriented User: Values smooth multitasking, fast app loading, and high-quality gaming.
  • Multimedia Enthusiast: Wants a vibrant display for watching videos, high-quality camera capabilities for content creation, and good audio capabilities for music lovers.
  • Modern User: Seeks the latest software, fast connectivity, and future-proof features, including eSIM.
  • Premium Feel: A user that prefers the feel and durability of a glass and aluminium build.

    Use Cases:

    • High-quality mobile gaming and graphic intensive applications.
    • Capturing high resolution photos and videos.
    • Smooth multi-tasking and productivity.
    • Streaming media with rich colours and smooth refresh rate.
    • A durable daily driver device.

4. Decision Framework

Key Questions to Consider:

  1. What is my budget? If budget is the primary concern, the Poco M3 is the more affordable option. The A55 will offer much more for its price, but at a higher cost.
  2. How important are performance and display quality? If smooth performance, and a high-quality display are important, the Galaxy A55 is the clear winner.
  3. How important is camera quality? For taking photos and videos, the A55 is superior in every aspect. The M3 will not offer good quality and is not a viable option if camera quality matters.

Scenario-Based Recommendations:

  • Scenario 1 (Budget-Limited, Basic Use): If you need a basic smartphone with a long battery life, and your budget is extremely tight, the Xiaomi Poco M3 is a good option.
  • Scenario 2 (Multimedia and Casual Gaming): For users who want an excellent display and respectable performance for media consumption and casual games, the Samsung Galaxy A55 is recommended.
  • Scenario 3 (Performance and Camera Focused): If you prioritize high performance, high-quality cameras, a modern device, and a premium feel, then the Samsung Galaxy A55 is the obvious choice.

My Choice and Explanation

If I had to choose between these two phones, I would pick the Samsung Galaxy A55. My reasoning is primarily based on the fact that the A55 is superior in nearly every way, and provides a much better user experience. The Poco M3 is an old device with an outdated software and camera, and lacks many features found on the A55. Even though the Poco M3 offers longer battery life, the A55's charging speed and overall performance more than makes up for it. It is also a much more premium-feeling device, and is much more durable. As someone who uses my phone for a variety of things, such as content creation, media consumption, and gaming, the A55 is the better all-rounder device, offering a great experience across all use cases. In terms of price to value, while more expensive than the M3, I believe the added cost is worth the improvements it makes in all areas, and is a much better value for money when compared to the M3.

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.