Xiaomi Poco X3 Pro vs Samsung Galaxy M15 - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date March 24, 2021 April 5, 2024
Release Year 2021 2024

Physical

Volume 119.33 cm³ 114.35 cm³
Screen Size to Weight Ratio 3.1 "/g 3 "/g
Weight 215 g 217 g
Height 165.3 mm 160.1 mm
Width 76.8 mm 76.8 mm
Thickness 9.4 mm 9.3 mm
Foldable Design No No
Available Colors
  • Phantom Black
  • Frost Blue
  • Metal Bronze
  • Gray
  • Light Blue
  • Dark Blue

Display

Screen Size 6.67 " 6.5 "
Resolution 1080 x 2400 1080 x 2340
Aspect Ratio 20:9 19.5:9
Screen-to-Body Ratio 84.6 % 84.3 %
Pixel Density 395 PPI 396 PPI
Refresh Rate 120 Hz 90 Hz
Typical Brightness 450 nits N/A
HBM Brightness N/A 800 nits
Peak Brightness N/A N/A

Hardware

Battery Capacity per Screen Area 115.98 mAh/in² 142.01 mAh/in²
Battery Density 43.24 mAh/cm³ 52.47 mAh/cm³
Battery Capacity 5160 mAh 6000 mAh
NFC Support Yes Yes
Chipset Qualcomm Snapdragon 860 (7 nm) Mediatek Dimensity 6100+ (6 nm)
CPU Octa-core (1x2.96 GHz Kryo 485 Gold & 3x2.42 GHz Kryo 485 Gold & 4x1.78 GHz Kryo 485 Silver) Octa-core (2x2.2 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55)
GPU Adreno 640 Mali-G57 MC2

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 USB Type-C 2.0

Software

Operating System Android Android
Initial OS Version 11 14
Maximum OS Version 12

Comparison Summary

1. Specifications Comparison

FeatureXiaomi Poco X3 ProSamsung Galaxy M15Practical Impact
Design
Dimensions165.3 x 76.8 x 9.4 mm160.1 x 76.8 x 9.3 mmPoco X3 Pro is slightly taller, but both are similar in width and thickness. May affect pocketability and one-handed use.
Weight215g217gBoth feel similarly substantial in hand. Weight difference is negligible.
Display
Size6.67"6.5"Poco X3 Pro provides a marginally larger viewing area, better for media consumption.
Resolution1080x24001080x2340Both are sharp enough for everyday use. The slight resolution difference is not noticeable.
Pixel Density395 PPI396 PPIBoth offer a sharp display, individual pixels are nearly indistinguishable.
TechnologyIPS LCDAMOLEDGalaxy M15 offers richer colors, deeper blacks, and better contrast. Better for viewing content and dark mode use.
Refresh Rate120Hz90HzPoco X3 Pro provides smoother scrolling and animations. Noticeable in fast-paced games and general UI navigation.
Brightness0 nits800 nitsGalaxy M15 is much brighter, significantly improving outdoor visibility in bright sunlight.
Performance
ChipsetSnapdragon 860 (7nm)Dimensity 6100+ (6nm)Poco X3 Pro's chip is significantly faster in benchmarks. Faster app loading and smoother multitasking for demanding applications.
Antutu Score627,869442,500Poco X3 Pro has significantly higher benchmark score, indicating superior performance.
GPUAdreno 640Mali-G57 MC2Poco X3 Pro has more powerful GPU for gaming. Better for playing graphics-intensive games at higher settings and framerates.
Battery
Capacity5160mAh6000mAhGalaxy M15 has a larger battery, likely providing significantly longer battery life per charge.
Charging33W Fast Charging25W Fast ChargingPoco X3 Pro charges faster, reducing charging times.
Camera
Main Camera48MP, f/1.7950MP, f/1.8Galaxy M15 has slightly higher resolution but Poco X3 Pro has a slightly wider aperture for low light performance.
Selfie Camera20MP, f/2.213MP, f/2.0Poco X3 Pro has higher resolution selfie camera. Galaxy M15 has slightly wider aperture.
Wide Angle Lens8MP, f/2.25MP, f/2.2Poco X3 Pro captures more details with its wider angle lens.
Depth Sensor2MP, f/2.4Not presentPoco X3 Pro has dedicated depth sensor for better bokeh effects.
Macro Lens2MP, f/2.42MP, f/2.4Both offer similar macro capabilities.
VideoUp to 4K@30fpsUp to 1080p@30fpsPoco X3 Pro offers higher video recording quality with 4K support.
Software
OSAndroid 11 (Upgradable to 12)Android 14Galaxy M15 comes with newer Android version out of the box, providing newer features and security updates.
Connectivity
Wi-Fi802.11ac, MIMO802.11acBoth support modern WiFi standards. Poco X3 Pro includes MIMO for potentially better connectivity in crowded environments.
Bluetooth5.05.2Galaxy M15 has a newer Bluetooth version, potentially offering better power efficiency and connectivity.
GPSGPS, A-GPS, GLONASS, Beidou, GalileoGPS, A-GPS, GLONASS, Beidou, QZSS, GalileoGalaxy M15 has more accurate GPS with QZSS support.
Storage
Internal128/256 GB128 GBPoco X3 Pro offers more storage options, for users with large media libraries.
RAM6/8 GB4/6 GBPoco X3 Pro offers more RAM, leading to smoother multitasking and better app performance.
ExpandableNoNoNeither phone supports expandable storage.
Audio
QualityHi-Res Audio, Stereo Speakers2 MicrophonesPoco X3 Pro has better audio quality and immersion. Galaxy M15 has two microphones for better call quality.
Security
FingerprintSide-mountedSide-mountedBoth have easily accessible fingerprint readers.
Build Quality
Screen ProtectionGorilla Glass 6UnknownPoco X3 Pro provides superior screen protection against scratches and cracks.
Sensors
SensorsAccelerometer, Compass, Gyroscope, ProximityAccelerometer, Gyroscope, ProximityPoco X3 Pro has additional Compass sensor for better navigation and AR applications.

2. Key Differences Analysis

Xiaomi Poco X3 Pro Advantages:

  • Superior Performance: The Snapdragon 860 chipset provides significantly better processing power and gaming performance.
  • Smoother Display: 120Hz refresh rate offers a more fluid and responsive user experience.
  • Higher Quality Video: 4K video recording allows for capturing higher quality footage.
  • Better Camera Features: Includes a dedicated depth sensor and a higher-resolution wide-angle lens and selfie camera.
  • Better Audio: Hi-Res Audio and Stereo speakers for better sound experience.
  • Better Build Quality: Superior screen protection with Corning Gorilla Glass 6.

Samsung Galaxy M15 Advantages:

  • Superior Display Technology: The AMOLED display offers much better colors, contrast, and power efficiency.
  • Better Outdoor Visibility: The much higher brightness of 800 nits makes it significantly easier to see in bright sunlight.
  • Longer Battery Life: Larger 6000 mAh battery provides better endurance, for extended use without charging.
  • Newer Software: Comes with Android 14 out of the box, offering the latest features and security updates.
  • More Accurate GPS: QZSS satellite system for better location accuracy.
  • Newer Bluetooth: Bluetooth 5.2 offering better power efficiency and connectivity.

Trade-offs:

  • Poco X3 Pro: Sacrifices display technology and battery life for significantly more performance. Older Software.
  • Galaxy M15: Compromises on performance and video quality for a superior display and battery life.

3. User Profiles & Recommendations

Xiaomi Poco X3 Pro is Ideal For:

  • Gamers: The powerful chipset and high refresh rate make it suitable for gaming.
  • Performance Users: Users who need fast app loading, smooth multitasking, and don't want any lags.
  • Media Creators: Those who need 4K video recording capabilities.

Specific Use Cases:

  • Playing graphics-intensive mobile games.
  • Running demanding applications.
  • Recording high-quality videos.

Samsung Galaxy M15 is Ideal For:

  • Casual Users: Everyday users who prioritize display quality, battery life, and a newer OS.
  • Media Consumers: Users who watch a lot of videos or browse social media.
  • Outdoor Users: Those who spend a lot of time in bright sunlight.
  • Users who want the latest android version: Those who want the latest features and security updates.

Specific Use Cases:

  • Watching videos and browsing social media in different lighting conditions.
  • Everyday usage without worrying too much about battery life.
  • Users looking for the latest android features and security updates.

Price-to-Value Ratio:

  • The Poco X3 Pro, while older, offers incredible performance for its price.
  • The Galaxy M15 offers a good balance of features for a more recent device with better battery and screen.

4. Decision Framework

Key Questions for Buyers:

  1. Do you prioritize gaming and performance, or display quality and battery life?
  2. How important is video quality and outdoor visibility to you?
  3. Do you prioritize having a newer software version over raw power?

Scenario-Based Recommendations:

  • Scenario 1: Heavy Mobile Gamer: Choose the Xiaomi Poco X3 Pro for its superior performance and 120Hz display, despite having an older android version.
  • Scenario 2: Casual Everyday User: Choose the Samsung Galaxy M15 for its vibrant AMOLED display, great battery life, and newer software.
  • Scenario 3: User who needs High-Quality Video Recording: Choose the Xiaomi Poco X3 Pro for its 4k recording capabilities and better camera features.
  • Scenario 4: Outdoor User: Choose the Samsung Galaxy M15 for its high brightness, making it more usable under bright sunlight.

My Choice

If I were to choose, I would lean towards the Samsung Galaxy M15. While the Poco X3 Pro has significant performance advantages, the AMOLED display and significantly better battery life, as well as the newer software, of the Galaxy M15 are more important for my daily usage. I value a vibrant display for media consumption and a long battery life to avoid the constant need for charging. For my personal use case, the performance offered by the Galaxy M15 is adequate and the other advantages are more important for my preferences.

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.