Xiaomi Redmi Note 9 Pro vs Samsung Galaxy S21 Ultra vs Xiaomi Poco X3 NFC

Compare phone and tablet specifications of up to three devices at once.

Display

Size:

6.7 inches
6.8 inches
6.7 inches

Resolution:

2400 x 1080 pixels, 20:9 ratio, 395 PPI
3200 x 1440 pixels, 20:9 ratio, 516 PPI
2400 x 1080 pixels, 20:9 ratio, 395 PPI

Technology:

IPS LCD
Dynamic AMOLED
IPS LCD

Screen-to-body:

84.42 %
89.33 %
84.68 %

Peak brightness:

1500 cd/m2 (nit)
450 cd/m2 (nit)

Features:

Scratch-resistant glass (Corning Gorilla Glass 5), Ambient light sensor, Proximity sensor
120Hz refresh rate (adaptable), HDR support, Scratch-resistant glass (Corning Gorilla Glass Victus), Ambient light sensor, Proximity sensor
120Hz refresh rate, HDR support, Scratch-resistant glass (Corning Gorilla Glass 5), Ambient light sensor, Proximity sensor

Hardware

System chip:

Qualcomm Snapdragon 720G SM7125
Qualcomm Snapdragon 888
Qualcomm Snapdragon 732G SM7150-AC

Processor:

Octa-core, 2300 MHz, Kryo 465, 64-bit, 8 nm
Octa-core, 2840 MHz, Kryo 680, 64-bit, 5 nm
Octa-core, 2300 MHz, Kryo 470, 64-bit, 8 nm

GPU:

Adreno 618
Adreno 660
Adreno 618

RAM:

6GB LPDDR4
12GB LPDDR5
6GB LPDDR4

Internal storage:

64GB (UFS 2.1)
128GB (UFS 3.1), not expandable
64GB (UFS 2.1)

Storage expansion:

microSDXC up to 512 GB
microSDXC up to 256 GB

Device type:

Smartphone
Smartphone
Smartphone

OS:

Android (10), Xiaomi MI UI
Android (11), Samsung One UI
Android (10), Xiaomi MI UI

Battery

Capacity:

5020 mAh
5000 mAh
5160 mAh

Type:

Li - Polymer, Not user replaceable
Li - Polymer, Not user replaceable
Li - Polymer, Not user replaceable

Battery life test results:

Charging:

Fast charging
Qualcomm Quick Charge 2.0, USB Power Delivery, Samsung Adaptive Fast Charging, Qi and Powermat wireless charging, Reverse wireless charging
Fast charging

Max charge speed:

Wired: 30.0W
Wired: 25.0W; Wireless: 15.0W
Wired: 33.0W

Camera

Rear:

Quad camera
Quad camera
Quad camera

Main camera:

64 MP (PDAF)
108 MP (OIS, Laser and PDAF)
64 MP (PDAF)

Specifications:

Aperture size: F1.9; Focal length: 26 mm; Sensor size: 1/1.7"; Pixel size: 0.8 μm
Aperture size: F1.8; Focal length: 24 mm; Sensor size: 1/1.33"; Pixel size: 0.8 μm
Aperture size: F1.9; Sensor size: 1/1.7"; Pixel size: 0.8 μm

Second camera:

8 MP (Ultra-wide)
10 MP (Telephoto, OIS, PDAF)
13 MP (Ultra-wide)

Specifications:

Aperture size: F2.2; Focal Length: 13 mm; Sensor size: 1/4"; Pixel size: 1.12 μm
Optical zoom: 3.0x; Aperture size: F2.4; Focal Length: 70 mm; Sensor size: 1/3.2"; Pixel size: 1.22 μm
Aperture size: F2.2

Third camera:

5 MP (Macro, Autofocus)
12 MP (Ultra-wide, PDAF)
2 MP (Macro)

Specifications:

Aperture size: F2.4; Sensor size: 1/5"; Pixel size: 1.12 μm
Aperture size: F2.2; Focal Length: 13 mm; Sensor size: 1/2.55"; Pixel size: 1.4 μm
Aperture size: F2.4; Pixel size: 1.75 μm

Fourth camera:

2 MP (Depth information)
10 MP (Periscope, OIS, PDAF)
2 MP (Depth information)

Specifications:

Aperture size: F2.4; Sensor size: 1/5"; Pixel size: 1.75 μm
Optical zoom: 10.0x; Aperture size: F4.9; Focal Length: 240 mm; Sensor size: 1/3.2"; Pixel size: 1.22 μm
Aperture size: F2.4; Pixel size: 1.75 μm

Video recording:

3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (120 fps), 1280x720 (HD) (960 fps)
7680x4320 (8K UHD) (24 fps), 3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (240 fps), 1280x720 (HD) (960 fps)
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (120 fps), 1280x720 (HD) (960 fps)

Features:

OIS, HDR, Hyperlapse, Video light, EIS

Front:

16 MP (HDR, Slow-motion videos)
40 MP (PDAF, HDR)
20 MP (HDR)

Video capture:

1920x1080 (Full HD)
3840x2160 (4K UHD) (60 fps)

Design

Dimensions:

6.53 x 3.02 x 0.35 inches (165.8 x 76.7 x 8.8 mm)
6.50 x 2.98 x 0.35 inches (165.1 x 75.6 x 8.9 mm)
6.51 x 3.02 x 0.37 inches (165.3 x 76.8 x 9.4 mm)

Weight:

7.37 oz (209.0 g)
8.04 oz (229.0 g)
7.58 oz (215.0 g)

Materials:

Back: Glass (Corning Gorilla Glass 5); Frame: Plastic
Back: Glass (Corning Gorilla Glass Victus); Frame: Aluminum
Back: Plastic

Resistance:

Water, Dust; IP68
Splash, Dust; IP53

Biometrics:

Fingerprint (touch)
2D Face unlock, Ultrasonic in-screen fingerprint
2D Face unlock, Fingerprint (touch)

Keys:

Right: Volume control, Lock/Unlock key
Right: Volume control, Lock/Unlock key
Right: Volume control, Lock/Unlock key

Colors:

Interstellar gray, Tropical green, Glacier white
Phantom black, Silver
Shadow gray, Cobalt blue

Cellular

5G:

n2, n5, n12, n25, n41, n66, n71, n77, n260, n261, SA, NSA, Sub-6, mmWave

LTE (FDD):

Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 20(800 DD), 28(700 APT)
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)

LTE (TDD):

Bands 38(2600), 40(2300), 41(2600+)
Bands 38(2600), 39(1900+), 40(2300), 41(2600+), 46, 48(3600)
Bands 38(2600), 40(2300), 41(2600+)

UMTS:

Bands 5(850), 8(900), 4(1700/2100), 2(1900), 1(2100)
Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)
Bands 5(850), 8(900), 4(1700/2100), 2(1900), 1(2100)

Data Speed:

LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
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, UMTS

Dual SIM:

Yes
Shared with microSD

SIM type:

Nano SIM
Nano SIM
Nano SIM

HD Voice:

Yes

VoLTE:

Yes
Yes

Multimedia

Headphones:

3.5mm jack
No 3.5mm jack
3.5mm jack

Speakers:

Earpiece, Loudspeaker
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
Wireless screen share

Radio:

FM, Stereo, RDS
FM

Additional microphone(s):

for Noise cancellation
for Noise cancellation, Video recording
for Noise cancellation

Connectivity & Features

Bluetooth:

5.0
5.1
5.1

Wi-Fi:

802.11 a, b, g, n, ac, dual-band; Wi-Fi Direct, Hotspot
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; Wi-Fi Direct, Hotspot

USB:

Type-C (reversible), USB 2.0
Type-C (reversible), USB 3.2
Type-C (reversible), USB 2.0

Features:

Charging
Charging, Headphones port, OTG, Video out
Charging

Location:

GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
GPS, A-GPS, Glonass, BeiDou, Cell ID, Wi-Fi positioning

Sensors:

Accelerometer, Gyroscope, Compass
Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer
Accelerometer, Gyroscope, Compass

Other:

NFC, Infrared
NFC, ANT+
NFC, Infrared

Hearing aid compatible:

M3, T3

Regulatory Approval

FCC approval:

Date approved:

Dec 22, 2020

FCC ID value:

A3LSMG998U link

Measured SAR:

Head:

0.77 W/kg

Body:

1.02 W/kg

Simultaneous Transmission:

1.59 W/kg

Wireless Router:

1.16 W/kg

Phablet:

3.15 W/kg

Buyers information

Price:

$ 1200
€ 229

In The Box:

33W Power adapter, Simple protective cover, USB Type-C cable, SIM eject tool, User guide, Warranty card
C to C Data Cable, Ejection Pin
33W power adapter, USB Type-C cable, Anti-bacterial case and screen protection, SIM eject tool, User guide, Warranty card

Availability

Officially announced:

Apr 30, 2020
Jan 14, 2021
FCC OKs Cingular\'s purchase of AT&T Wireless