Motorola Moto G31 vs Samsung Galaxy A15 5G - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date December 6, 2021 December 16, 2023
Release Year 2021 2023

Physical

Volume 102.89 cm³ 103.28 cm³
Screen Size to Weight Ratio 3.54 "/g 3.25 "/g
Weight 181 g 200 g
Height 161.9 mm 160.1 mm
Width 73.9 mm 76.8 mm
Thickness 8.6 mm 8.4 mm
Foldable Design No No
Available Colors
  • Mineral Grey
  • Baby Blue
  • Brave Black
  • Optimistic Blue
  • Magical Blue
  • Personality Yellow

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 118.34 mAh/in²
Battery Density 48.59 mAh/cm³ 48.41 mAh/cm³
Battery Capacity 5000 mAh 5000 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 17

Comparison Summary

Alright, let's dive into a head-to-head comparison of the Motorola Moto G31 and the Samsung Galaxy A15 5G. As a tech journalist with a bit of an engineering background, I always like to go beyond the spec sheet and focus on what these differences mean for you, the user. Let’s break it down.

1. Specifications Breakdown

Here’s a detailed look at how these two phones stack up, focusing on the practical impact of each specification:

FeatureMotorola Moto G31Samsung Galaxy A15 5GReal-World Implications
Design
Dimensions161.9 x 73.9 x 8.6 mm160.1 x 76.8 x 8.4 mmThe Moto G31 is slightly taller and narrower, while the A15 5G is a bit wider and thinner. Might feel different in hand.
Weight181g200gMoto G31 is lighter, making it potentially more comfortable for extended use.
Display
Size6.4"6.5"Both have very similar screen sizes, a minor 0.1" difference won't be noticeable in day to day usage.
Resolution1080x24001080x2340Both offer FHD+ resolutions; you won't notice a real difference in clarity here, even though the A15 is slightly less dense
Pixel Density411 PPI396 PPIAgain, very similar sharpness; both displays will look crisp.
TechnologyAMOLEDAMOLEDBoth boast vibrant AMOLED displays, offering great colors and deep blacks.
Refresh Rate60Hz90HzThe A15 5G will have smoother scrolling and animations. Makes a difference especially with high fps games.
Brightness0 nits800 nitsThe A15 5G will be much more visible in bright sunlight. Moto G31 would be difficult to use in sunny conditions
Performance
ChipsetMediatek Helio G85 (12nm)Mediatek Dimensity 6100+ (6nm)The A15 5G's newer 6nm chipset will be more power-efficient and faster than the G85 on the Moto G31.
AnTuTu Score225,154442,500The A15 5G is significantly more powerful, offering faster app loads, and better multitasking, and handling more demanding games.
GPUMali-G52 MC2Mali-G57 MC2A15 5G has an updated GPU for better graphics performance in games.
Camera
Standard Camera50MP, f/1.8, 1/2.76”50MP, f/1.8Similar main camera performance in good lighting, Moto G31’s sensor size would result in slightly better image quality in low light
Selfie Camera13MP, f/2.213MP, f/2.0A15 5G with wider aperture should capture brighter selfies, especially in low light.
Wide-Angle Lens8MP, f/2.05MP, f/2.2Moto G31 provides higher resolution and wider aperture, meaning potentially better wide-angle shots.
Macro Lens2MP, f/2.42MP, f/2.4Very similar macro performance, good enough for some close-up detail shots.
Video Recording1080p@30fps1080p@30fps with EISBoth record good enough 1080p quality videos but the A15 5G's EIS should help with more stable footage
Battery Life
Capacity5000mAh5000mAhBoth should offer a full day of usage on a single charge with similar capacity.
Charging10W25WA15 5G will charge much faster than Moto G31.
Software
OSAndroid 11Android 14The A15 5G runs on a newer Android version with updated features and security patches, and will also receive up to Android 17 updates.
Connectivity
Wi-Fi802.11ac802.11acBoth support the same Wi-Fi bands, offering good wireless performance.
Bluetooth5.05.2A15 5G has a slightly newer and potentially more energy-efficient Bluetooth version.
GPSGPS, A-GPS, GLONASS, etc.GPS, A-GPS, GLONASS, etc.Both support the standard GPS suite for accurate location tracking, and the Moto G31 also has SUPL.
SIMDual Nano-SIMDual Nano-SIMBoth allow for two SIMs to be used at once.
Storage
Internal64GB/128GBNAThe Moto G31 comes in different variants while the A15 has no information available.
RAM4GBNAThe Moto G31 has 4GB of RAM for basic multitasking, but no information for A15.
Expandable StorageNoNoNeither phones have a memory card slot, meaning you are stuck with the onboard memory.
Audio
QualityDolby Atmos, 2 mics2 micsMoto G31 has better audio with Dolby Atmos for a more immersive sound experience.
Security
FeaturesSide-mounted FingerprintSide-mounted FingerprintBoth have a convenient side fingerprint sensor for unlocking the device.
Sensors
FeaturesComprehensive suiteComprehensive suiteBoth have comprehensive suite of sensors for gaming, proximity and other general usage. A15 has Ultrasonic proximity virtual.

2. Key Insights

Motorola Moto G31 Strengths:

  • Lighter Design: At 181g, it’s significantly lighter than the A15, which is beneficial for extended use.
  • Better wide-angle camera: Higher resolution and wider aperture make the wide-angle lens better.
  • Dolby Atmos: Enhanced audio experience

Samsung Galaxy A15 5G Strengths:

  • Significantly More Powerful: The Dimensity 6100+ chip offers nearly double the performance in benchmarks and is much more power efficient with its 6nm technology.
  • Smoother Display: The 90Hz refresh rate makes the display feel more responsive.
  • Brighter Screen: 800 nits max brightness makes outdoor visibility far superior.
  • Faster Charging: 25W charging is a big improvement over the Moto G31’s 10W charging.
  • Newer Software: Ships with Android 14 and is slated to receive updates up to Android 17.
  • Bluetooth 5.2: Newer version offers a better connection.

Trade-offs and Limitations:

  • Moto G31: Older software, weaker performance, dimmer screen, slower charging, no expandable storage.
  • Samsung Galaxy A15 5G: It’s heavier, and has no expandable storage.

3. User Profiles and Recommendations

  • Motorola Moto G31: Best for users who prioritize lightweight design, a standard camera, and Dolby Atmos sound, and are on a strict budget. This phone might suit someone who primarily uses their phone for basic tasks and multimedia consumption.

  • Samsung Galaxy A15 5G: Ideal for users who need good performance for smooth multitasking, gaming, or want better outdoor screen visibility, and a long software support. Suitable for anyone who wants more from their device on day to day basis.

4. Buying Decision Framework

To help you decide, ask yourself these questions:

  1. Do I need the best performance and want a smoother experience? If yes, the A15 5G is the clear winner.
  2. Is screen brightness and viewing in bright sunlight important to me? If so, the A15 5G will be a better choice.
  3. Am I on a tight budget, and will mostly use it for basic tasks? If you answer yes, the Moto G31 is a good, more affordable option that still offers a good screen and audio quality.

Scenario-Based Recommendations:

  • For the Casual User: If your primary uses are browsing, messaging, and social media, and you're on a budget, the Moto G31 will be fine.
  • For the Power User: If you play games, use several apps at once, or need a brighter display, the Samsung Galaxy A15 5G is the better investment.
  • For the Multimedia Lover: The Moto G31 offers Dolby Atmos, but the screen dimness will reduce the quality. Go with A15 5G if you prefer a better display.
  • For the Traveler: The A15 5G with its fast charging and better brightness is much better suited.

My Choice

If I were choosing between these two, I would absolutely go for the Samsung Galaxy A15 5G. While the Moto G31 does have some appeal with its lighter design and Dolby Atmos, the huge leap in performance (almost double the benchmark score!), brighter screen and faster charging of the A15 5G are the clear game-changers. I want a phone that can keep up with my multitasking needs, be easily visible outdoors, and isn't constantly running on empty. The newer Android version is also a plus, ensuring I get the latest security and features. The A15 5G just offers a much better balance between usability and real-world power, making it a far better overall experience.

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.