Motorola Moto G31 vs Samsung Galaxy M15 - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date December 6, 2021 April 5, 2024
Release Year 2021 2024

Physical

Volume 102.89 cm³ 114.35 cm³
Screen Size to Weight Ratio 3.54 "/g 3 "/g
Weight 181 g 217 g
Height 161.9 mm 160.1 mm
Width 73.9 mm 76.8 mm
Thickness 8.6 mm 9.3 mm
Foldable Design No No
Available Colors
  • Mineral Grey
  • Baby Blue
  • Gray
  • Light Blue
  • Dark Blue

Display

Screen Size 6.4 " 6.5 "
Resolution 1080 x 2400 1080 x 2340
Aspect Ratio 20:9 19.5:9
Screen-to-Body Ratio 82.7 % 84.3 %
Pixel Density 411 PPI 396 PPI
Refresh Rate N/A 90 Hz
Typical Brightness N/A N/A
HBM Brightness N/A 800 nits
Peak Brightness N/A N/A

Hardware

Battery Capacity per Screen Area 122.07 mAh/in² 142.01 mAh/in²
Battery Density 48.59 mAh/cm³ 52.47 mAh/cm³
Battery Capacity 5000 mAh 6000 mAh
NFC Support Yes Yes
Chipset Mediatek MT6769Z Helio G85 (12 nm) Mediatek Dimensity 6100+ (6 nm)
CPU Octa-core (2x2.0 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55) Octa-core (2x2.2 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55)
GPU Mali-G52 MC2 Mali-G57 MC2

Connectivity

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

Software

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

Comparison Summary

Okay, let's dive deep into a head-to-head comparison of the Motorola Moto G31 and the Samsung Galaxy M15. I'll break down the specs, explain what they mean for you, and give some recommendations to help you decide which phone is the better fit.

1. Specifications Breakdown

Here’s a detailed look at the key specs, with a focus on their real-world impact:

FeatureMotorola Moto G31Samsung Galaxy M15Real-World Implications
Design
Dimensions161.9 x 73.9 x 8.6 mm160.1 x 76.8 x 9.3 mmThe G31 is taller and slimmer, while the M15 is wider and thicker. M15 has slightly larger volume.
Weight181g217gG31 is significantly lighter, better for extended use.
Display
Size6.4"6.5"Virtually identical screen sizes.
Resolution1080x24001080x2340Similar clarity; both will offer sharp images.
PPI411396Very similar pixel density, neither will look more sharp.
TechnologyAMOLEDAMOLEDBoth have vibrant, high-contrast AMOLED screens.
Refresh Rate60Hz90HzM15 offers smoother scrolling and animations.
Brightness0 nits800 nitsM15 provides much better visibility in bright sunlight.
Performance
ChipsetMediatek Helio G85 (12nm)Mediatek Dimensity 6100+ (6nm)M15's newer chipset offers faster processing and better power efficiency.
AnTuTu Score225,154442,500M15 performs significantly faster in everyday tasks, gaming, and multitasking.
GPUMali-G52 MC2Mali-G57 MC2M15 has a more capable GPU for better graphics performance.
Battery Life
Capacity5000mAh6000mAhM15’s larger battery will likely last significantly longer between charges.
Charging10W25WM15 charges much faster, reducing downtime.
Camera
Main Camera50MP, f/1.8, 1/2.76", 0.64µm50MP, f/1.8Comparable main cameras, G31 has sensor information available.
Selfie Camera13MP, f/2.2, 1.12µm13MP, f/2.0M15’s wider aperture might perform slightly better in low light.
Wide-Angle Lens8MP, f/2.0, 1.12µm5MP, f/2.2G31’s wide-angle lens is higher resolution and wider aperture.
Macro Lens2MP, f/2.4, 1.75µm2MP, f/2.4Both have standard macro cameras for close-up shots.
Video1080p@30fps, 120fps slowmo1080p@30fps w/ EIS, 240fps slowmoM15 offers EIS and faster slow-motion capabilities.
FeaturesPDAF, LAF, optical zoom, RAWManual focusG31 offers Optical Zoom, Phase and Laser autofocus, and RAW images while M15 allows Manual focus.
Software & Connectivity
OSAndroid 11Android 14M15 offers a more up-to-date user experience.
Wi-Fi802.11ac802.11acBoth feature dual-band Wi-Fi.
Bluetooth5.05.2M15 has a newer Bluetooth version.
GPSGPS, A-GPS, GLONASS, Beidou, SUPL, GalileoGPS, A-GPS, GLONASS, Beidou, QZSS, GalileoM15 supports more satellite systems for precise location.
Storage
Internal64GB/128GB128GBM15 only offers the 128GB variant, while G31 offers 64GB and 128GB variants.
RAM4GB4GB/6GBM15 offers a 6GB RAM variant for better multitasking.
ExpandableNoNoNeither phone has expandable storage.
Audio
QualityDolby Atmos, 2 mic2 micMotorola G31 has Dolby Atmos
Security
BiometricSide fingerprintSide fingerprintBoth have a side-mounted fingerprint scanner.
SensorsFingerprint, Proximity, Accelerometer, Compass, GyroscopeFingerprint, Accelerometer, Gyroscope, Ultrasonic proximity virtualMotorola has a Compass, hall sensor, while Samsung has Ultrasonic Proximity sensor

2. Key Insights

Motorola Moto G31 Strengths:

  • Lightweight Design: Its lighter build (181g) is a boon for users who prefer a comfortable, easy-to-hold phone.
  • Camera Features: The G31 stands out with its superior wide-angle lens, Optical zoom, Phase and Laser Autofocus, and the ability to shoot in RAW.
  • Audio Features: Dolby Atmos enhances audio immersion.

Samsung Galaxy M15 Strengths:

  • Superior Performance: The Dimensity 6100+ chipset provides significantly better processing and gaming performance.
  • Excellent Display: The 90Hz refresh rate and 800 nits brightness make the display smoother and much more visible in bright environments.
  • Extended Battery Life: The larger 6000mAh battery and 25W fast charging are substantial advantages for heavy users.
  • Up-to-date Software: Comes with the latest Android 14.
  • Newer Tech: The M15 is a newer device with Bluetooth 5.2 and improved GPS.

Trade-offs:

  • The Moto G31 sacrifices performance and battery for a lighter design and some extra camera and audio features.
  • The Samsung Galaxy M15 prioritizes battery and performance over some camera capabilities and device weight.

3. User Profiles and Recommendations

Motorola Moto G31:

  • Best For: Users who value lightweight design, a good wide-angle camera, and a immersive audio experience.
  • Use Cases: Casual photography, media consumption in indoor settings, users who find weight uncomfortable, users who prefer the option of RAW images.

Samsung Galaxy M15:

  • Best For: Users who prioritize performance, long battery life, and a bright screen that performs well in sunlight.
  • Use Cases: Mobile gamers, avid social media users, individuals who spend a lot of time outdoors, anyone who dislikes low battery anxiety.

4. Buying Decision Framework

Here are three questions to help you decide:

  1. How important is sustained performance for gaming and multitasking?
    • If performance is your top priority, the Samsung Galaxy M15 is the clear winner.
  2. How critical is battery life and fast charging to your daily routine?
    • If you’re often on the go and away from a charger, the Samsung Galaxy M15 is the better option.
  3. Do you prioritize device weight and camera features or do you require more modern technology and longer battery life?
    • If weight and the extra camera features and Dolby Atmos are paramount, the Motorola Moto G31 is suitable, otherwise, go with the Samsung Galaxy M15.

Scenario-Based Recommendations:

  • The Casual User: If you browse social media, take the odd photo, and don't push your phone too hard, the Motorola Moto G31 will serve you well, particularly if you love taking pictures with a wide-angle camera.
  • The Power User: If you're a heavy multitasker, gamer, or often outdoors, the Samsung Galaxy M15 offers the performance and battery life you need.
  • The Photographer: If you prioritize advanced camera features like Phase and Laser Autofocus, RAW images and Optical Zoom, the Motorola Moto G31 is preferable, however, if you prioritize low-light selfie quality and video, then the Samsung Galaxy M15 is better.

My Choice

If I were choosing between these two devices, I'd personally go with the Samsung Galaxy M15. Here's why:

As a tech journalist and analyst, I often push my devices to their limits—multitasking, running multiple apps, and capturing content. The significantly better performance of the M15, along with the far superior battery life and fast charging, outweighs the extra camera and audio features of the G31 for my needs. The brighter screen and 90Hz refresh rate are also major quality-of-life improvements, making everyday use much more enjoyable. I also highly value up-to-date software. While I appreciate the G31's lightweight design, the added weight of the M15 is an acceptable trade-off for a far more powerful and long-lasting device. Ultimately, the Samsung Galaxy M15 better aligns with my daily workflow and requirements.

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.