Home Phone comparison Samsung Galaxy M31 and Xiaomi Redmi 15 4G - Which is better?

Samsung Galaxy M31 vs Xiaomi Redmi 15 4G

46 out 100
Samsung Galaxy M31
VS
60 out 100
Xiaomi Redmi 15 4G
Samsung Galaxy M31
Xiaomi Redmi 15 4G

Compared 2 smartphones : Samsung Galaxy M31 Manufactured in March, 2020, with display 6.4 with chipsetSamsung Exynos 7 Octa 9611, vs Xiaomi Redmi 15 4G, Manufactured in August, 2025with chipsetQualcomm Snapdragon 685. Below are specs, tests, pros and cons for each device

  1. Differences
  2. Review
  3. Specs
  4. Benchmarks
  5. Battery Life
  6. Cameras
  7. Comments (0)

Key Differences

Device key advantages
Reasons to choose Samsung Galaxy M31
  • Higher pixel density: 403ppi
  • Lighter design: 191g vs 224g
  • Supports Dolby Atmos
Reasons to choose Xiaomi Redmi 15 4G
  • Larger display: 6.9in
  • Higher refresh rate: 144Hz
  • Higher battery capacity: 7000mAh vs 6000mAh
  • Infrared port
  • Includes charger

Versions

Available versions and configurations
Memory Options - 6/64 GB
- 6/128 GB
- 8/128 GB		 - 6/128 GB
- 8/256 GB

Review

Key Specs Samsung Galaxy M31 and Xiaomi Redmi 15 4G
Display
Color accuracy, sharpness & brightness
Camera
Main & front camera tests
Performance
App & system performance
Games
3D gaming performance
Battery
Battery life, charging speed & type
Connectivity
Connectivity features
NanoReview Score
Overall score by NanoReview
Adjust each parameter’s importance to find the best match for you.
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Function
Importance (Weight)
Display:
Camera:
Performance:
Gaming:
Battery:
Connectivity:
Higher weight means greater impact on NanoReview score.

Tests & specs

Specs & test comparison
Smartphones:
Samsung Galaxy M31
vs
Xiaomi Redmi 15 4G

Display

Display quality comparison
Type Super AMOLED IPS LCD
Size 6.4 in 6.9 in
Resolution 1080x2340 pixels 1080x2340 pixels
Aspect ratio 19.5:9 19.5:9
Pixel density 403 ppi 374 ppi
Refresh rate 60 Hz 144 Hz
Adaptive refresh rate No Yes
Max brightness 600 nits n/a
HDR support Yes HDR10 No
Screen-to-body ratio 84.1 % 83.1 %
Features Always-On Display n/a
Display test
Peak brightness (auto)
Samsung Galaxy M31
614 nits
Xiaomi Redmi 15 4G
n/a
sRGB gamut142 %n/a
PWM (Flicker)208 Hzn/a
Response time8.5 msn/a
Contrast∞ Infiniten/a
Sources: NotebookCheck [Samsung Galaxy M31]

Design & Build

Design and ergonomics comparison
Height 159.2 mm (6.27 in) 171.1 mm (6.74 in)
Width 75.1 mm (2.96 in) 82.1 mm (3.23 in)
Thickness 8.9 mm (0.35 in) 8.6 mm (0.34 in)
Weight 191 g (6.74 oz) 224 g (7.9 oz)
Water resistance No IP64
Back panel Plastic Plastic
Frame Plastic Plastic
Colors - Black
- Blue
- Red		 - Black
- Gray
- Purple
Fingerprint sensor Yes rear Yes, In-Button
Screen-to-body ratio
Samsung Galaxy M31
84.1 %
Xiaomi Redmi 15 4G
83.1 %

Performance

Testing Samsung Galaxy M31 and Xiaomi Redmi 15 4G In benchmarks
Processor
Chipset Samsung Exynos 7 Octa 9611 Qualcomm Snapdragon 685
Max Frequency 2300 MHz 2800 MHz
CPU Cores 8 (4 + 4) 8 (4 + 4)
Architecture - 4/1.7 (Cortex-A53)
- 4/2.3 (Cortex-A73)		 - 4/1.9 (Cortex-A53)
- 4/2.8 (Cortex-A73)
Process Samsung TSMC
Transistor Size 10 nm 6 nm
Neural Processor Yes Hexagon 686
Graphics Mali-G72 MP3 Adreno 610
GPU Cores 54 128
GPU Frequency 850 MHz 1260 MHz
FLOPS 113.8 GFLOPS 322.6 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Samsung Galaxy M31
505
Xiaomi Redmi 15 4G
475
Geekbench 6 (Multi-Core)
Samsung Galaxy M31
1547
Xiaomi Redmi 15 4G
1514
Geekbench 6 (Single-Core)505475
Geekbench 6 (Multi-Core)15471514
AnTuTu 10
AnTuTu 10
Samsung Galaxy M31
257150
Xiaomi Redmi 15 4G
380990
CPU73640114885
GPU4535057988
Memory62516103236
UX75644104881
NanoReview Score257150380990
3DMark Wild Life
3DMark Wild Life
Samsung Galaxy M31
820
Xiaomi Redmi 15 4G
n/a
Max Surface Temp.45.2 °Cn/a
Stability74 %n/a
Graphics Test4 fpsn/a
Graphics Score820n/a
Sources: 3DMark [Samsung Galaxy M31]

Memory

RAM
RAM Size 6 GB 6 GB
Memory Type LPDDR4X LPDDR4X
Memory Frequency 1866 MHz 2133 MHz
Channels 2 2
Storage
Storage Capacity128 GB128 GB
Storage TypeUFS 2.1UFS 2.2
Memory CardMicroSDMicroSD

Software

OS Android 10 (Upgradeable to Android 12) Android 15
OS Size 15 GB n/a
UI Skin One UI 4.1 HyperOS 2.0

Battery

Volume 6000 mAh 7000 mAh
Max Charging Power 15 W 33 W
Battery Type Li-ion n/a
Removable No No
Wireless Charging No No
Reverse Charging No No
Fast Charging Yes Samsung Adaptive Fast Charge (45% in 60 min) Yes
Full Charge Time 2:25 h n/a
Battery Life Test
Battery Life
Samsung Galaxy M31
24:27
Xiaomi Redmi 15 4G
n/a
Web Browsing10:13 hn/a
Video Playback14:16 hn/a
Games05:44 hn/a
Standby Mode117 hn/a

Main camera

Matrix 64 MP 50 MP
Photo resolution 9248x6920 pixels n/a
Zoom Digital Digital
Flash LED LED
Stabilization Digital Digital
8K Recording No No
4K Recording Yes (Up to 30 fps) No
1080p Recording Yes (Up to 30 fps) Yes (Up to 30 fps)
Slow Motion 240 fps (720p) n/a
Wide-angle lens 123 ° n/a
Lenses count Standard: 64 MP
Ultra-wide: 8 MP
Macro: 5 MP
Depth: 5 MP		 Standard: 50 MP
Depth
Features - Bokeh effect
- Pro mode		 Bokeh effect
Main lens
Matrix64 MP50 MP
Aperturef/1.8f/1.8
Focal length26 mmn/a
SensorISOCELL Bright GW1n/a
Sensor size1/1.72n/a
Pixel size0.8 μmn/a
AutofocusPhase autofocusPhase autofocus
StabilizationDigitalDigital
Ultra-wide lens
Matrix8 MPn/a
Aperturef/2.2n/a
Focal length12 mmn/a
Sensor size1/4.0n/a
Pixel size1.12 μmn/a
StabilizationDigitaln/a

Front camera

Matrix 32 MP 8 MP
Photo resolution 6528x4896 pixels n/a
Aperture f/2.0 f/2.0
Focal length 26 mm n/a
Sensor Sony IMX616 n/a
Sensor size 1/2.8 n/a
Pixel size 0.8 μm n/a
Autofocus No No
Stabilization Digital Digital
Video resolution 2160p (4K) at 30 fps 1080p (Full HD) at 30 fps
TOF 3D sensor No No

Connectivity

Wi-Fi version Wi-Fi 5 (802.11 a/b/g/n/ac) Wi-Fi 5 (802.11 a/b/g/n/ac)
Wi-Fi features - Dual Band
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display		 - Dual Band
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
Bluetooth version 5 5
Bluetooth features PBAP/PAB, PAN, OPP, MAP, HSP, HID, HFP, DIP, AVRCP, A2DP LE
USB type USB Type-C USB Type-C
USB version 2 2
USB features - Charging
- USB Storage Mode
- OTG		 - Charging
- USB Storage Mode
- OTG
GPS - GPS
- GLONASS
- Beidou
- Galileo		 - GPS
- GLONASS
- Beidou
- Galileo
NFC* Varies by region Yes
Infrared Port No Yes
Connectivity
SIM Count*22
SIM TypeNanoNano
SIM ModeDual SIM StandbyDual SIM Standby
eSIM Support *NoNo
Hybrid SlotNoNo
2G BandsGSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2n/a
3G BandsHSDPA 850 / 900 / 1900 / 2100n/a
LTE Bands*LTE (B1/B3/B5/B8/B20/B40/B41)n/a
LTE category12n/a
5G SupportNoNo

Sound

Speakers Mono n/a
3.5 mm Jack Yes Yes
FM Radio Yes No
Dolby Atmos Yes n/a
Speaker Test
Max Volume
Samsung Galaxy M31
81.7 dB
Xiaomi Redmi 15 4G
n/a

Other

Class Mid-range Budget
Announced February, 2020 yr August, 2025 yr
Release Date March, 2020 yr August, 2025 yr
Launch Price ($) 220 n/a
MSRP ($) n/a 150
Sensors - Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor		 - Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor
Charger Included n/a Yes, 33 W
* Attention! Config, frequencies, NFC, and other specs may vary by region.

Results

After analyzing the data, we consider Xiaomi Redmi 15 4G the clear winner in this comparison.

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