Home Phone comparison Xiaomi Poco X3 Pro and Samsung Galaxy S21 - Which is better?

Xiaomi Poco X3 Pro vs Samsung Galaxy S21

55 out 100
Xiaomi Poco X3 Pro
VS
65 out 100
Samsung Galaxy S21
Xiaomi Poco X3 Pro
Samsung Galaxy S21

Compared 2 smartphones : Xiaomi Poco X3 Pro Manufactured in April, 2021, with display 6.67 with chipsetQualcomm Snapdragon 860, vs Samsung Galaxy S21, Manufactured in February, 2021 with chipsetSamsung Exynos 2100. 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 Xiaomi Poco X3 Pro
  • Larger display: 6.67in
  • Higher battery capacity: 5160mAh vs 4000mAh
  • Infrared port
Reasons to choose Samsung Galaxy S21
  • Higher pixel density: 421ppi
  • Lighter design: 169g vs 215g
  • Supports newer USB: 3.2 vs 2
  • Supports Dolby Atmos
  • Built-in eSIM

Versions

Available versions and configurations
Memory Options - 6/125 GB
- 6/128 GB
- 6/256 GB
- 8/128 GB
- 8/256 GB		 - 8/128 GB
- 8/256 GB

Review

Key Specs Xiaomi Poco X3 Pro and Samsung Galaxy S21
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.
Customize your score
Function
Importance (Weight)
Display:
Camera:
Performance:
Gaming:
Battery:
Connectivity:
Higher weight means greater impact on NanoReview score.

Tests & specs

Specs & test comparison
Smartphones:
Xiaomi Poco X3 Pro
vs
Samsung Galaxy S21

Display

Display quality comparison
Type IPS LCD Dynamic AMOLED
Size 6.67 in 6.2 in
Resolution 1080x2400 pixels 1080x2400 pixels
Aspect ratio 20:9 20:9
Pixel density 395 ppi 421 ppi
Refresh rate 120 Hz 120 Hz
Adaptive refresh rate No Yes (48-120 Hz)
Max brightness 450 nits 800 nits
HDR support Yes HDR10 Yes HDR10+
Touch Sampling Rate 240 Hz n/a
Screen-to-body ratio 84.6 % 85.9 %
Features n/a - DCI-P3
- Always-On Display
Display test
Peak brightness (auto)
Xiaomi Poco X3 Pro
530 nits
Samsung Galaxy S21
854 nits
sRGB gamut95.1 %99.5 %
PWM (Flicker)2404 Hz240 Hz
Response time37.4 ms5 ms
Contrast995:1∞ Infinite
Sources: NotebookCheck [Xiaomi Poco X3 Pro], [Samsung Galaxy S21]

Design & Build

Design and ergonomics comparison
Height 165.3 mm (6.51 in) 151.7 mm (5.97 in)
Width 76.8 mm (3.02 in) 71.2 mm (2.8 in)
Thickness 9.4 mm (0.37 in) 7.9 mm (0.31 in)
Weight 215 g (7.58 oz) 169 g (5.96 oz)
Water resistance IP53 IP68
Cooling system Vapor chamber n/a
Back panel Plastic Plastic
Frame Plastic Metal
Colors - Black
- Gold
- Blue		 - White
- Gray
- Pink
- Purple
Fingerprint sensor Yes In-Button Yes In-Display
Screen-to-body ratio
Xiaomi Poco X3 Pro
84.6 %
Samsung Galaxy S21
85.9 %

Performance

Testing Xiaomi Poco X3 Pro and Samsung Galaxy S21 In benchmarks
Processor
Chipset Qualcomm Snapdragon 860 Samsung Exynos 2100
Max Frequency 2960 MHz 2900 MHz
CPU Cores 8 (1 + 3 + 4) 8 (1 + 3 + 4)
Architecture - 4/1.8 (Cortex-A55 (Kryo 485 Silver))
- 3/2.42 (Cortex-A76 (Kryo 485 Gold))
- 1/2.96 (Cortex-A76 (Kryo 485 Prime))		 - 4/2.2 (Cortex-A55)
- 3/2.81 (Cortex-A78)
- 1/2.91 (Cortex-X1)
Process TSMC Samsung
Transistor Size 7 nm 5 nm
Neural Processor Hexagon 690 Yes
Graphics Adreno 640 Mali-G78 MP14
GPU Cores 768 896
GPU Frequency 675 MHz 854 MHz
FLOPS 1036.8 GFLOPS 1530.4 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Xiaomi Poco X3 Pro
973
Samsung Galaxy S21
1331
Geekbench 6 (Multi-Core)
Xiaomi Poco X3 Pro
2589
Samsung Galaxy S21
3593
Geekbench 6 (Single-Core)9731331
Geekbench 6 (Multi-Core)25893593
AnTuTu 10
AnTuTu 10
Xiaomi Poco X3 Pro
642297
Samsung Galaxy S21
903780
CPU181709253391
GPU155743281676
Memory126967158352
UX177878210361
NanoReview Score642297903780
3DMark Wild Life
3DMark Wild Life
Xiaomi Poco X3 Pro
3456
Samsung Galaxy S21
5715
Max Surface Temp.44.1 °C38.9 °C
Stability97 %66 %
Graphics Test20 fps34 fps
Graphics Score34565715
Sources: 3DMark [Xiaomi Poco X3 Pro], [Samsung Galaxy S21]
PCMark 3.0
PCMark 3.0
Xiaomi Poco X3 Pro
10579
Samsung Galaxy S21
13123
Writing score1339316101
Web score806211909
Video editing60357097
Data manipulation847010153
NanoReview Score1057913123

Memory

RAM
RAM Size - 6 GB
- 8 GB		 8 GB
Memory Type LPDDR4X LPDDR5
Memory Frequency 2133 MHz 2750 MHz
Channels 2 2
Storage
Storage Capacity- 128 GB
- 256 GB		- 128 GB
- 256 GB
Storage TypeUFS 3.1UFS 3.1
Memory CardMicroSDNo

Software

OS Android 11 (Upgradeable to Android 13) Android 11 (Upgradeable to Android 14)
OS Size 13 GB 28.1 GB
UI Skin MIUI 14 One UI 6.0

Battery

Volume 5160 mAh 4000 mAh
Max Charging Power 33 W 25 W
Battery Type Li-Po Li-ion
Removable No No
Wireless Charging No Yes (15 W)
Reverse Charging No Yes (Wireless)
Fast Charging Yes (55% in 30 min) Yes (55% in 50 min)
Full Charge Time 1:15 h 1:35 h
Battery Life Test
Battery Life
Xiaomi Poco X3 Pro
22:40
Samsung Galaxy S21
17:54
Web Browsing08:43 h06:01 h
Video Playback12:45 h11:06 h
Games05:20 h04:21 h
Standby Mode117 h95 h

Main camera

Matrix 48 MP 12 MP
Photo resolution 8000x6000 pixels 4000x3000 pixels
Zoom Digital Optical, 1.1x
Flash Dual LED Dual LED
Stabilization Digital Optical
8K Recording No Up to 24FPS
4K Recording Yes (Up to 30 fps) Yes (Up to 60 fps)
1080p Recording Yes (Up to 60 fps) Yes (Up to 60 fps)
Slow Motion 960 fps (1080p) 960 fps (720p)
Wide-angle lens 119 ° 120 °
Lenses count Standard: 48 MP
Ultra-wide: 8 MP
Macro: 2 MP
Depth: 2 MP		 Standard: 12 MP
Telephoto: 64 MP
Ultra-wide: 12 MP
Features - Bokeh effect
- Pro mode		 - Bokeh effect
- Pro mode
- RAW support
Main lens
Matrix48 MP12 MP
Aperturef/1.8f/1.8
Focal length26 mm26 mm
SensorSony IMX582Sony IMX555
Sensor size1/2.01/1.76
Pixel size0.8 μm1.8 μm
AutofocusPhase autofocusPhase autofocus (Dual Pixel)
StabilizationDigitalOptical
Telephoto
Matrixn/a64 MP
Aperturen/af/2.0
Focal lengthn/a28 mm
Sensorn/aSamsung Bright S5KGW2
Sensor sizen/a1/1.72
Pixel sizen/a0.8 μm
Stabilizationn/aOptical
Ultra-wide lens
Matrix8 MP12 MP
Aperturef/2.2f/2.2
Focal lengthn/a13 mm
SensorOmnivision OV8856Sony IMX563
Sensor size1/41/2.55
Pixel size1.12 μm1.4 μm
StabilizationDigitalDigital
Main camera DxOMark results
Photo quality
Xiaomi Poco X3 Pro
n/a
Samsung Galaxy S21
129
Video quality
Xiaomi Poco X3 Pro
n/a
Samsung Galaxy S21
137
Overall camera score
Xiaomi Poco X3 Pro
n/a
Samsung Galaxy S21
133
Bokehn/a70
Previewn/a72
Zoomn/a126
Sources: DxOMark [Samsung Galaxy S21]

Front camera

Matrix 20 MP 10 MP
Photo resolution 5480x3648 pixels 3872x2592 pixels
Aperture f/2.2 f/2.2
Focal length 25 mm 26 mm
Sensor CMOS Sony IMX374
Sensor size 1/3.4 1/3.24
Pixel size 0.8 μm 1.22 μm
Autofocus No Phase autofocus (Dual Pixel)
Stabilization Digital Digital
Video resolution 1080p (Full HD) at 30 fps 2160p (4K) at 60 fps
TOF 3D sensor No No

Connectivity

Wi-Fi version Wi-Fi 5 (802.11 a/b/g/n/ac) Wi-Fi 6 (802.11 a/b/g/n/ac/ax)
Wi-Fi features - Dual Band
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display		 - Dual Band
- Wi-Fi MiMO
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
Bluetooth version 5 5
Bluetooth features LE, A2DP LE, A2DP
USB type USB Type-C USB Type-C
USB version 2 3.2
USB features - Charging
- USB Storage Mode
- USB-Host mode
- OTG		 - Charging
- USB Storage Mode
- USB-Host mode
- OTG
GPS - GPS
- GLONASS
- Beidou
- Galileo		 - GPS
- GLONASS
- Beidou
- Galileo
NFC* Yes Yes
Infrared Port Yes No
Connectivity
SIM Count*22
SIM TypeNanoNano
SIM ModeDual SIM StandbyDual SIM Standby
eSIM Support *NoYes
Hybrid SlotYesNo
2G BandsGSM B2/3/5/8GSM 850, 900, 1800, 1900 MHz
3G BandsUMTC B1/2/4/5/8WCDMA Band 1, 2, 4, 5, 8
LTE Bands*LTE (B1/B2/B3/B4/B5/B7/B8/B20/B28/B32/B38/B40/B41)LTE (B1/B2/B3/B4/B5/B7/B8/B12/B13/B17/B18/B19/B20/B25/B26/B28/B32/B38/B39/B40/B41/B66)
LTE category2024
5G SupportNoYes

Sound

Speakers Stereo Stereo
3.5 mm Jack Yes No
FM Radio Yes No
Dolby Atmos No Yes
Speaker Test
Max Volume
Xiaomi Poco X3 Pro
88.3 dB
Samsung Galaxy S21
87 dB

Other

Class Mid-range Flagship
Announced March, 2021 yr January, 2021 yr
Release Date April, 2021 yr February, 2021 yr
Launch Price ($) 250 800
Sensors - Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor		 - Hall Sensor
- Barometer
- Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor
* Attention! Config, frequencies, NFC, and other specs may vary by region.

Results

After analyzing the data, we consider Samsung Galaxy S21 the clear winner in this comparison.

Survey

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