Samsung Galaxy S21+ vs Xiaomi Poco X3 Pro Specs Comparison

Compare mobile phone specifications of up to three devices at once. Our specs comparison tool helps you find and compare the perfect phone for your needs.

8.5
Samsung Galaxy S21+
Samsung Galaxy S21+ Xiaomi Poco X3 Pro
Released · Jan 29, 2021
Released · March 2021
6.7-inch · 2400x1080px
6.7-inch · 2400x1080px
Triple camera
Quad camera
8GB · 128GB
6GB · 128GB
4800 mAh
5160 mAh
Check prices

Design

Dimensions
6.35 x 2.98 x 0.31 inches
161.5 x 75.6 x 7.8 mm
6.51 x 3.02 x 0.37 inches
165.3 x 76.8 x 9.4 mm
Weight
7.13 oz (202.0 g) 7.58 oz (215.0 g)
Materials
Back: Glass (Corning Gorilla Glass Victus)
Frame: Aluminum
Resistance
Water, Dust; IP68 Splash, Dust; IP53
Biometrics
2D Face unlock, Ultrasonic in-screen fingerprint 2D Face unlock, Fingerprint (touch)
Keys
Right: Volume control, Lock/Unlock key Left: Volume control, Lock/Unlock key
Colors
Phantom silver, Black, Violet Phantom black, Frost blue, Metal bronze

Display

Size
6.7-inch 6.7-inch
Resolution
2400x1080px, 20:9 ratio, 393 PPI 2400x1080px, 20:9 ratio, 395 PPI
Technology
Dynamic AMOLED IPS LCD
Refresh rate
120Hz (adaptive) 120Hz
Screen-to-body
88.63 % 84.68 %
Peak brightness
1300 cd/m2 (nit)
Features
HDR support, Scratch-resistant glass (Corning Gorilla Glass Victus), Ambient light sensor, Proximity sensor HDR support, Scratch-resistant glass (Corning Gorilla Glass 6), Ambient light sensor, Proximity sensor

Hardware

System chip
Qualcomm Snapdragon 888 (5 nm) Qualcomm Snapdragon 860 SM8150-AC (7 nm)
Processor
Octa-core
1x2.84GHz Kryo 680
3x2.42GHz Kryo 680
4x1.80GHz Kryo 680
Octa-core
2960 MHz
Kryo 485
GPU
Adreno 660 Adreno 640
RAM
8GB (LPDDR5) 6GB (LPDDR4)
Internal storage
128GB (UFS 3.0) 128GB (UFS 3.1)
Storage expansion
not expandable microSDXC up to 1024 GB
OS
Android (13, 12, 11), Samsung One UI Android (11), Xiaomi MI UI

Battery

Capacity
4800 mAh 5160 mAh
Type
Li - Polymer
Charging
Qualcomm Quick Charge 2.0, USB Power Delivery, Samsung Adaptive Fast Charging, Qi and Powermat wireless charging, Reverse wireless charging
Charge speed
Wired: 25.0W
Wireless: 15.0W
Wired: 33.0W
PhoneArena Battery Tests
Battery Life Estimate
5h 26min
Browsing
10h 50min
Video
8h 27min
Gaming
8h 36min
Battery Life Estimate
Untested
Browsing
Untested
Video
Untested
Gaming
Untested

Camera

Rear
Triple camera Quad camera
Main camera
12 MP (OIS, PDAF)
Aperture size: F1.8
Focal length: 26 mm
Sensor size: 1/1.76"
Pixel size: 1.8 μm
48 MP (PDAF)
Aperture size: F1.8
Sensor size: 1/2"
Pixel size: 0.8 μm
Second camera
12 MP (Ultra-wide, PDAF)
Aperture size: F1.8
Focal Length: 13 mm
Sensor size: 1/2.55"
Pixel size: 1.4 μm
8 MP (Ultra-wide)
Aperture size: F2.2
Third camera
64 MP (Telephoto, OIS, PDAF)
Aperture size: F2.0
Focal Length: 29 mm
Sensor size: 1/2.55"
Pixel size: 0.8 μm
2 MP (Macro)
Aperture size: F2.4
Fourth camera
2 MP (Depth information)
Aperture size: F2.4
Flash
LED LED
Video recording
7680x4320 (8K UHD) (24 fps), 3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (240 fps), 1280x720 (HD) (960 fps)
OIS, HDR, Hyperlapse, Video light, EIS
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (60 fps), 1280x720 (HD) (30 fps)
Front
10 MP (PDAF, HDR), Video capture: 3840x2160 (4K UHD) (60 fps)

Connectivity & Features

Bluetooth
5.0 5.0
WLAN
802.11 a,b,g,n,ac,ax(Wi-Fi 6),dual-band
MIMO, Wi-Fi Direct, Hotspot
802.11 a,b,g,n,ac,dual-band
MIMO, Wi-Fi Direct, Hotspot
USB
Type-C, USB 3.2 Type-C
Hearing aid compatible
M3/T3
Location
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
Sensors
Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer Accelerometer, Gyroscope, Compass
Other
NFC, ANT+ NFC, Infrared

Multimedia

Headphones
No 3.5mm jack 3.5mm jack
Speakers
Earpiece, Multiple speakers Earpiece, Multiple speakers
Features
32-Bit DAC, Dolby Atmos, aptX, Dolby Digital, Dolby Digital Plus
Screen mirroring
Wireless screen share Wireless screen share
Radio
FM
Additional microphone(s)
Noise cancellation, Video recording Noise cancellation

Cellular

5G
Bands n2, n5, n12, n25, n41, n66, n71, n77, n260, n261, SA, NSA, Sub-6, mmWave
4G (FDD)
Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 13(700 c), 14(700 PS), 18(800 Lower), 19(800 Upper), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 30(2300 WCS), 66(AWS-3), 71(600) Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 20(800 DD), 28(700 APT)
4G (TDD)
Bands 38(2600), 39(1900+), 40(2300), 41(2600+), 46, 48(3600) Bands 38(2600), 40(2300), 41(2600+)
3G
Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900) Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)
Data Speed
LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
Dual SIM
Yes
SIM type
Nano SIM Nano SIM

Regulatory Approval

FCC approval
Date approved: Dec 18, 2020
FCC ID value: A3LSMG996U
Date approved: Feb 01, 2021
FCC ID value: 2AFZZJ20SG
Measured SAR
Head: 0.65 W/kg
Body: 0.95 W/kg
Simultaneous Transmission: 1.59 W/kg
Wireless Router: 1.04 W/kg
Phablet: 3.97 W/kg
Head: 0.81 W/kg
Body: 0.67 W/kg
Simultaneous Transmission: 1.57 W/kg
Wireless Router: 0.78 W/kg

Buyers information

MSRP
$ 1000 € 249
In The Box
C to C Data Cable, Ejection Pin

Availability

Officially announced
Jan 14, 2021 Mar 22, 2021

Alternative variants

with 256GB storage
Internal storage 256GB
MSRP $ 1050
with 256GB storage
RAM 8GB
Internal storage 256GB
MSRP € 299
for Europe
System chip Samsung Exynos 2100 (5 nm)
Processor Octa-core
1x 2.91GHz Cortex-X1 + 3x 2.81GHz Cortex-A78 + 4x 2.2GHz Cortex-A55
GPU Mali G78 MP14
Weight 7.05 oz (200.0 g)
5G Bands SA, NSA, Sub-6
FCC approval Date approved: Dec 18, 2020
FCC ID value: A3LSMG996B
Measured SAR Head: 0.24 W/kg
Body: 0.75 W/kg
Simultaneous Transmission: 3.59 W/kg
Wireless Router: 1.26 W/kg
Phablet: 1.95 W/kg
FCC OKs Cingular\'s purchase of AT&T Wireless