Xiaomi Poco X2 vs Samsung Galaxy M31

Here we compared two mid-range smartphones: the 6.67-inch Xiaomi Poco X2 (with Qualcomm Snapdragon 730G) that was released on February 5, 2020, against the Samsung Galaxy M31, which is powered by Exynos 7 Octa 9611 and came out 1 month after. On this page, you will find tests, full specs, strengths, and weaknesses of each of the gadgets.

Key differences

An overview of the main advantages of each smartphone
Reasons to consider the Xiaomi Poco X2
  • Higher display refresh rate – 120 Hz
  • 42% better performance in AnTuTu Benchmark (326K versus 230K)
  • Slow-motion recording at 960FPS
  • More energy-efficient CPU – Snapdragon 730G
  • 70% faster in single-core GeekBench 5 test: 548 and 323 points
  • Has a built-in infrared port
Reasons to consider the Samsung Galaxy M31
  • Comes with 1500 mAh larger battery capacity: 6000 vs 4500 mAh
  • Delivers 23% higher maximum brightness (612 against 498 nits)
  • More recent OS version: Android 11 versus 10
  • Super AMOLED display (versus competitor's IPS LCD)
  • Supports Dolby Atmos sound technology
  • Weighs 17 grams less
  • The front-facing camera can record video at 4K
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Review

Display
Screen quality, color accuracy, brightness
Performance
CPU/GPU performance in apps and games
Battery
Battery life, charging type and speed
Camera
Photo and video recording quality
Connectivity
Networks, ports, data transmission
NanoReview score
Final comparison evaluation

Value for money

You can enter your local price of these phones (in USD or any other currency) and click on the "Calculate" button to see which one has a better value for money.
Price

Tests and specifications

Comparison table of technical specifications and tests
Phone:
vs

Display

Type IPS LCD Super AMOLED
Size 6.67 inches 6.4 inches
Resolution 1080 x 2400 pixels 1080 x 2340 pixels
Aspect ratio 20:9 19.5:9
PPI 395 ppi 403 ppi
Refresh rate 120 Hz 60 Hz
HDR support Yes, HDR10 Yes, HDR10
Screen protection Corning Gorilla Glass 5 Corning Gorilla Glass 3
Screen-to-body ratio 84.8% 84%
Display features - - Always-On Display
Display tests
RGB color space - 142%
PWM - 208 Hz
Response time - 8.5 ms
Contrast - ∞ Infinity
Max. Brightness
498 nits
Galaxy M31 +23%
612 nits
Sources: NotebookCheck [3]

Design and build

Height 165.3 mm (6.51 inches) 159.2 mm (6.27 inches)
Width 76.6 mm (3.02 inches) 75.1 mm (2.96 inches)
Thickness 8.8 mm (0.35 inches) 8.9 mm (0.35 inches)
Weight 208 gramm (7.34 oz) 191 gramm (6.74 oz)
Waterproof No No
Rear material Glass Plastic
Frame material Plastic Plastic
Colors Blue, Red, Purple Black, Blue, Red
Fingerprint scanner Yes, in home button Yes, rear
Screen-to-body ratio
Poco X2 +1%
84.8%

Performance

Tests of Xiaomi Poco X2 and Samsung Galaxy M31 in the benchmarks
SoC
Chipset Qualcomm Snapdragon 730G Samsung Exynos 7 Octa 9611
Max. clock 2200 MHz 2300 MHz
CPU cores 8 (2 + 6) 8 (4 + 4)
Architecture - 6 cores at 1.8 GHz: Kryo 470 Silver (Cortex-A55)
- 2 cores at 2.2 GHz: Kryo 470 Gold (Cortex-A76)
- 4 cores at 1.7 GHz: Cortex-A53
- 4 cores at 2.3 GHz: Cortex-A73
Lithography process 8 nanometers 10 nanometers
Graphics Adreno 618 Mali-G72 MP3
GPU clock 825 MHz 850 MHz
FLOPS ~422 GFLOPS ~259 GFLOPS
Memory
RAM size 6, 8 GB 6 GB
Memory type LPDDR4X LPDDR4X
Memory clock 1866 MHz 1866 MHz
Channels 2 2
Storage
Storage size 64, 128, 256 GB 128 GB
Storage type UFS 2.1 UFS 2.1
Memory card MicroSD MicroSD
Memory card max. size Up to 256 GB Up to 512 GB

Benchmarks

Geekbench 5 (Single-Core)
Poco X2 +70%
548
Geekbench 5 (Multi-Core)
Poco X2 +38%
1695
1230
AnTuTu Benchmark 9
Poco X2 +42%
326781
230245
CPU 99567 60447
GPU 86669 56508
Memory 53042 44109
UX 90782 70913
Total score 326781 230245
3DMark Wild Life Performance
Stability - 74%
Graphics test - 4 FPS
Graphics score - 820
Sources: 3DMark [3]

Software

Operating system Android 10 Android 10 (Can be upgraded to Android 11)
ROM MIUI 11 One UI 3.1
OS size - 15 GB

Battery

Specifications
Capacity 4500 mAh 6000 mAh
Charge power 27 W 15 W
Battery type Li-Po Li-Ion
Replaceable No No
Wireless charging No No
Reverse charging No No
Fast charging Yes (100% in 70 min) Yes, Samsung Adaptive Fast Charge (45% in 60 min)
Full charging time 1:10 hr 2:25 hr

Camera

Specs and camera test of smartphones
Main camera
Matrix 64 megapixels 64 megapixels
Image resolution 9000 x 7000 9248 x 6920
Zoom Digital Digital
Flash Dual LED LED
Stabilization Digital Digital
8K video recording No No
4K video recording Up to 30FPS Up to 30FPS
1080p video recording Up to 120FPS Up to 30FPS
Slow motion 960 FPS (720p) 240 FPS (720p)
Angle of widest lens 120° 123°
Lenses 4 (64 MP + 8 MP + 2 MP + 2 MP) 4 (64 MP + 8 MP + 5 MP + 5 MP)
Wide (main) lens - 64 MP
- Aperture: f/1.9
- Focal length: 26 mm
- Pixel size: 0.8 micron
- Sensor: 1/1.72", Sony IMX686 (Exmor-RS CMOS)
- Phase autofocus
- 64 MP
- Aperture: f/1.8
- Focal length: 26 mm
- Pixel size: 0.8 micron
- Sensor: 1/1.72", ISOCELL Bright GW1 (ISOCELL CMOS)
- Phase autofocus
Ultra-wide lens - 8 MP
- Aperture: f/2.2
- Focal length: 13 mm
- Pixel size: 1.12 micron
- Sensor: 1/4" (CMOS)
- 8 MP
- Aperture: f/2.2
- Focal length: 12 mm
- Pixel size: 1.12 micron
- Sensor: 1/4.0" (CMOS)
Macro lens - 2 MP
- Aperture: f/2.4
- Pixel size: 1.75 micron
- Sensor: 1/5" (CMOS)
- 5 MP
- Aperture: f/2.2
Depth lens - 2 MP
- Aperture: f/2.4
- Pixel size: 1.75 micron
- Sensor: 1/5" (CMOS)
- 5 MP
- Aperture: f/2.2
- Pixel size: 1.12 micron
- Sensor: 1/5.0" (CMOS)
Camera features - Bokeh mode
- Pro mode
- Bokeh mode
- Pro mode
Selfie camera
Megapixels 20 megapixels 32 megapixels
Image resolution 5963 x 3354 6528 x 4896
Aperture f/2.2 f/2.0
Focal length 27 mm 26 mm
Pixel size 0.8 microns 0.8 microns
Sensor type CMOS CMOS
Sensor size 1/3.4" 1/2.8"
Video resolution 1080p (Full HD) at 30 FPS 2160p (4K) at 30 FPS

Connectivity

Wi-Fi standard Wi-Fi 5 (802.11 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 LE, A2DP PBAP/PAB, PAN, OPP, MAP, HSP, HID, HFP, DIP, AVRCP, A2DP
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* No Depends on the region
Infrared port Yes No
Network
Number of SIM* 2 2
Type of SIM card Nano Nano
Multi SIM mode Standby Standby
eSIM support* No No
Hybrid slot Yes No
LTE Cat* 15 12
5G support No No

Sound

Speakers Mono Mono
Headphone audio jack Yes Yes
FM radio Yes Yes
Dolby Atmos No Yes
Speakers test
Max. loudness
n/a
81.7 dB

Other

Category Mid-range Mid-range
Announced February 2020 February 2020
Release date February 2020 March 2020
SAR (head) 1.08 W/kg 0.48 W/kg
SAR (body) 0.62 W/kg 1.13 W/kg
Sensors - Proximity sensor
- Gyroscope
- Accelerometer
- Ambient light sensor
- Compass
- Fingerprint
- Proximity sensor
- Gyroscope
- Accelerometer
- Ambient light sensor
- Compass
- Fingerprint
*Disclaimer! NFC, GSM network support, and some other specs can be different depending on the country.

Conclusion

If the performance and design are more important to you, then choose the Xiaomi Poco X2. But if the software, battery life, and sound are more of a priority – go for the Samsung Galaxy M31.

Cast your vote

So, which phone would you choose?
8 (53.3%)
7 (46.7%)
Total votes: 15

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