Xiaomi 12X vs Samsung Galaxy M15 - Detailed Phone Comparison

Detailed Comparison

Specification
Xiaomi 12X
Xiaomi 12X
Xiaomi

General

Launch Date December 31, 2021 April 5, 2024
Release Year 2021 2024

Physical

Volume 87.52 cm³ 114.35 cm³
Screen Size to Weight Ratio 3.57 "/g 3 "/g
Weight 176 g 217 g
Height 152.7 mm 160.1 mm
Width 69.9 mm 76.8 mm
Thickness 8.2 mm 9.3 mm
Foldable Design No No
Available Colors
  • Blue
  • Purple
  • Gray
  • Gray
  • Light Blue
  • Dark Blue

Display

Screen Size 6.28 " 6.5 "
Resolution 1080 x 2400 1080 x 2340
Aspect Ratio 20:9 19.5:9
Screen-to-Body Ratio 89.2 % 84.3 %
Pixel Density 419 PPI 396 PPI
Refresh Rate 120 Hz 90 Hz
Typical Brightness N/A N/A
HBM Brightness N/A 800 nits
Peak Brightness 1100 nits N/A

Hardware

Battery Capacity per Screen Area 114.10 mAh/in² 142.01 mAh/in²
Battery Density 51.41 mAh/cm³ 52.47 mAh/cm³
Battery Capacity 4500 mAh 6000 mAh
NFC Support Yes Yes
Chipset Qualcomm SM8250-AC Snapdragon 870 5G (7 nm) Mediatek Dimensity 6100+ (6 nm)
CPU Octa-core (1x3.2 GHz Kryo 585 & 3x2.42 GHz Kryo 585 & 4x1.80 GHz Kryo 585) Octa-core (2x2.2 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55)
GPU Adreno 650 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

Comparison Summary

Alright, let's break down the Xiaomi 12X and the Samsung Galaxy M15. It’s a classic showdown between a performance-focused contender and a battery-life champion. I’ve got my engineering hat on, so let’s dive into the nitty-gritty and see what these devices offer in the real world.

1. Specifications Breakdown

Here's a detailed look at the key specs, how they stack up, and what they mean for you in everyday use:

FeatureXiaomi 12XSamsung Galaxy M15Real-World Implications
DESIGN
Dimensions152.7 x 69.9 x 8.2 mm160.1 x 76.8 x 9.3 mmXiaomi 12X is noticeably more compact, fitting more easily into pockets and offering better one-handed usability. The M15 is bulkier, a bit more of a handful.
Weight176g217gXiaomi 12X is significantly lighter, making it more comfortable for prolonged use and reduces fatigue.
DISPLAY
Size6.28"6.5"Galaxy M15 has a slightly larger screen, good for immersive viewing, while the Xiaomi 12X is a touch more compact and could be preferred by some due to ease of use.
Resolution1080x24001080x2340Both provide sharp visuals, though the slight difference is negligible.
PPI419396Xiaomi 12X has a slightly sharper display, but both appear very crisp in daily use.
TechnologyAMOLEDAMOLEDBoth offer vibrant colors and deep blacks typical of AMOLED displays.
Refresh Rate120Hz90HzXiaomi 12X offers smoother animations, especially noticeable when scrolling through feeds and playing games.
Brightness1100 nits800 nitsXiaomi 12X offers much better visibility in bright sunlight, making it ideal for outdoor use.
PERFORMANCE
ChipsetSnapdragon 870Dimensity 6100+Xiaomi 12X has a far more powerful processor, resulting in faster app launches, smoother multitasking, and better gaming performance.
AnTuTu Score815,210442,500Xiaomi 12X has significantly more raw processing power, leading to a much snappier experience, particularly with more demanding applications.
GPUAdreno 650Mali-G57 MC2Xiaomi 12X has a superior GPU, providing better graphics performance for games and media.
CAMERA
Main Camera50MP f/1.88, 1/1.56” sensor (Sony IMX766), 1.0µm50MP f/1.8Xiaomi 12X's larger sensor and better pixel size should capture more detail and perform better in low light. The wider aperture on the M15 allows it to perform better with low light conditions.
Selfie Camera32MP f/2.45, 1/3” sensor (Omnivision OV32B), 0.7µm13MP f/2.0Xiaomi 12X's higher resolution provides more detailed selfies. Wider aperture on M15 could make low-light selfies better.
Wide Angle13MP f/2.4, 1/3.06" sensor (Omnivision OV13B10), 1.12µm5MP f/2.2Xiaomi 12X offers a much higher resolution wide-angle shots, and has a slightly wider aperture (more light)
Macro Camera5MP f/2.42MP f/2.4Xiaomi 12X offers slightly higher detail with the additional megapixels on its macro lens.
VideoUp to 8K@24fps, 4K@60fps, EISUp to 1080p@30fps, EISXiaomi 12X offers a much wider range of video recording options for different creative applications. Its advanced EIS ensures stable videos.
Additional Camera FeaturesOIS, Ultra-stable video, RAW, Night Mode-Xiaomi 12X has extra camera features for better stability and control.
BATTERY LIFE
Capacity4500mAh6000mAhSamsung Galaxy M15 boasts a significantly larger battery, promising much longer battery life.
Charging67W fast charging25W fast chargingXiaomi 12X charges significantly faster, minimizing downtime.
SOFTWARE
OSAndroid 11Android 14Samsung Galaxy M15 offers a newer, more secure version of Android. Xiaomi 12X will likely get OS updates in time though.
CONNECTIVITY
WiFiWiFi 6 (802.11ax)WiFi 5 (802.11ac)Xiaomi 12X has newer Wi-Fi capabilities for better speeds and performance.
Bluetooth5.1, incl. AptX, LDAC5.2Samsung Galaxy M15 offers more up-to-date version while the Xiaomi 12x offers aptX & LDAC for higher quality audio.
GPSComprehensive SuiteStandard SuiteXiaomi 12X supports a wider range of satellite systems for superior location accuracy.
STORAGE
Internal Storage128 GB/256 GB128 GBXiaomi 12X offers up to 256GB of storage if you need extra space.
RAM8GB/12 GB4GB/6 GBXiaomi 12X has considerably more RAM, which helps with better multitasking and gaming.
Expandable StorageNoNoNeither phone supports expandable storage.
AUDIO
Audio QualityStereo Speakers, Dolby Atmos, Hi-Res2 microphonesXiaomi 12X has a much better audio setup, leading to better listening experiences.
SECURITY
SecurityBasic fingerprint sensorside-mounted fingerprint sensorSamsung Galaxy M15 has a side-mounted fingerprint sensor, which is often more convenient.
BUILD QUALITY
Screen ProtectionGorilla Glass VictusUnknownXiaomi 12X has stronger screen protection, making it more durable.
SENSORS
SensorsComprehensive SuiteComprehensive SuiteXiaomi 12X includes a compass for enhanced navigation capabilities.

2. Key Insights

  • Xiaomi 12X: This is the performance king. Its Snapdragon 870 chipset, higher refresh rate, better camera sensors, and superior audio make it a powerhouse. It shines for those who prioritize speed, gaming, and overall responsiveness. The brighter screen and faster charging are huge pluses too.

  • Samsung Galaxy M15: The M15 is all about battery life. Its massive 6000mAh battery will easily last through the day (and probably well into the next) for most users. While it doesn’t have the processing prowess or premium features of the Xiaomi 12X, it's an excellent option for users who need a reliable phone that can last and last. It also features a newer version of Android out of the box.

3. User Profiles and Recommendations

  • Xiaomi 12X:

    • Gamers: Its powerful processor, high refresh rate, and good GPU handle demanding games with ease.
    • Power Users: Those who juggle multiple apps, need smooth performance, and appreciate high-quality visuals.
    • Media Enthusiasts: The great screen, excellent audio, and advanced video features are perfect for watching content and creating your own.
    • Users Who Value Fast Charging: The 67W charging is a lifesaver for those on the go.
  • Samsung Galaxy M15:

    • Casual Users: Those who use their phones for basic tasks like browsing, social media, and calls.
    • Heavy Battery Users: Those who hate charging their phones often and need a device that can go the distance.
    • Budget-Conscious Buyers: Those looking for a reliable device with solid basics at a good value (likely significantly cheaper than the Xiaomi 12X).
    • Users Who Prefer Latest Android: Those who want a newer Android software version and a longer update window.

4. Buying Decision Framework

Here are three questions to guide your decision:

  1. What's your top priority: performance or battery life? If you need a phone that screams in games and apps, choose the Xiaomi 12X. If you prioritize extended battery life, the Galaxy M15 is the winner.
  2. How much do you care about premium features? The Xiaomi 12X offers things like OIS, 8K recording, Wi-Fi 6, and a brighter screen – if these things matter to you, it’s worth the extra investment. The M15 sticks with the basics but does them well.
  3. What's your budget? If price is a major factor, the Samsung Galaxy M15 is likely the more affordable option. The Xiaomi 12X, while more expensive, comes with a powerful feature set.

Scenario-Based Recommendations:

  • Scenario 1: The Commuter: If you're commuting all day, the M15’s battery life is a boon. However, if you're looking to kill time on the train with some high-quality streaming, you'd benefit from the Xiaomi's brighter display.

  • Scenario 2: The Gamer: The Xiaomi 12X is the clear choice here. It’s built for smoother gaming with its performance. The M15 is not designed for demanding gaming at all.

  • Scenario 3: The Photographer: While the M15 has the 50MP main sensor, the better camera sensors, OIS and better video recording options on the Xiaomi make it the better choice overall.

My Choice

If I had to pick one for myself, I'd go with the Xiaomi 12X. Here's why:

As a tech enthusiast and a bit of a power user, I value performance and overall experience above all else. The Xiaomi 12X offers a more balanced package—a powerful processor, better cameras with more options and OIS, fast charging and a beautiful display. While battery life is important, I'd rather deal with slightly less battery runtime than be stuck with a device that feels slow or can't keep up with my demands. It's also more future-proof with features such as wifi 6, OIS, and an 8K camera. Plus, the faster charging helps minimize any impact from the lower battery capacity. The M15 is great for those who prioritize longevity on a single charge, but the Xiaomi's overall responsiveness and capabilities fit my needs better.

Alex Griffin
Alex Griffin

Technology analyst specializing in mobile devices and consumer electronics.

Core Expertise

  • Mobile technology analysis
  • Consumer electronics evaluation
  • Technical specification interpretation
  • User experience insights

Professional Mission Empowering readers to make informed technology decisions by transforming intricate specifications into understandable, practical guidance.

Demystifying technology, one device at a time.