Samsung Galaxy M21 vs Xiaomi Redmi Note 9 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 M21	Xiaomi Redmi Note 9
Released · Mar 23, 2020	Released · May 12, 2020
6.4-inch · 2340x1080px	6.5-inch · 2340x1080px
Triple camera	Quad camera
4GB · 64GB	3GB · 64GB
6000 mAh	5020 mAh
Check prices	Check prices

Design

Dimensions
6.26 x 2.96 x 0.35 inches 159.0 x 75.1 x 8.9 mm	6.39 x 3.04 x 0.35 inches 162.3 x 77.2 x 8.9 mm
Weight
6.63 oz (188.0 g)	7.02 oz (199.0 g)
Materials
Back: Plastic Frame: Plastic	Frame: Plastic
Resistance
	Splash
Biometrics
2D Face unlock, Fingerprint (touch)	Fingerprint (touch)
Keys
Right: Volume control, Lock/Unlock key	Right: Volume control, Lock/Unlock key
Colors
Midnight blue, Raven black	Forest green, Polar white, Midnight gray

Display

Size
6.4-inch	6.5-inch
Resolution
2340x1080px, 19.5:9 ratio, 403 PPI	2340x1080px, 19.5:9 ratio, 395 PPI
Technology
Super AMOLED	IPS LCD
Screen-to-body
84.11 %	83.52 %
Peak brightness
420 cd/m2 (nit)
Features
Scratch-resistant glass (Corning Gorilla Glass 3), Proximity sensor	Scratch-resistant glass (Corning Gorilla Glass 5), Ambient light sensor, Proximity sensor

Hardware

System chip
Exynos 9611 (10 nm)	MediaTek Helio G85 (12 nm)
Processor
Octa-core 4x 2.3GHz Cortex-A73 + 4x 1.7GHz Cortex-A53	Octa-core 2000 MHz Arm Cortex-A75 and ArmCortex-A55
GPU
Mali-G72 MP3	Mali G52 MC2
RAM
4GB (LPDDR4)	3GB (LPDDR4)
Internal storage
64GB, available to use: 49 GB	64GB (eMMC 5.1)
Storage expansion
microSDXC up to 512 GB	microSDXC up to 128 GB
OS
Android (11, 10), Samsung One UI	Android (10), Xiaomi MI UI

Battery

Capacity
6000 mAh	5020 mAh
Type
Li - Polymer	Li - Polymer
Charging
Fast charging	Fast charging, Reverse wired charging
Charge speed
	Wired: 18.0W

Battery Life Estimate

Untested

Browsing

Untested

Video

Untested

Gaming

Untested

Battery Life Estimate

Untested

Browsing

Untested

Video

10h 43min

Gaming

7h 34min

Camera

Rear
Triple camera	Quad camera
Main camera
48 MP (PDAF) Aperture size: F2.0 Focal length: 26 mm Sensor size: 1/2" Pixel size: 0.8 μm	48 MP (PDAF) Aperture size: F1.8 Sensor size: 1/2" Pixel size: 0.8 μm
Second camera
8 MP (Ultra-wide) Aperture size: F2.2 Focal Length: 12 mm Sensor size: 1/4" Pixel size: 1.12 μm	8 MP (Ultra-wide) Aperture size: F2.2 Sensor size: 1/4" Pixel size: 1.2 μm
Third camera
5 MP (Depth information) Aperture size: F2.2	2 MP (Macro, Autofocus) Aperture size: F2.4 Pixel size: 1.75 μm
Fourth camera
	2 MP Aperture size: F2.4 Sensor size: 1/5" Pixel size: 1.7 μm
Flash
LED	LED
Video recording
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD), 1280x720 (HD) (240 fps) EIS	1920x1080 (Full HD) (30 fps), 1280x720 (HD) (120 fps)
Front
20 MP (HDR), Video capture: 1920x1080 (Full HD)	13 MP (HDR), Video capture: 1920x1080 (Full HD)

Connectivity & Features

Bluetooth
5.0	5.0
WLAN
802.11 a,b,g,n,ac,dual-band Wi-Fi Direct, Hotspot	802.11 a,b,g,n,ac,dual-band Wi-Fi Direct, Hotspot
USB
Type-C, USB 2.0	Type-C, USB 2.0
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	Accelerometer, Gyroscope, Compass
Other
	NFC, Infrared

Multimedia

Headphones
3.5mm jack	3.5mm jack
Speakers
Earpiece, Loudspeaker	Earpiece, Loudspeaker
Features
Dolby Atmos
Screen mirroring
Wireless screen share	Wireless screen share
Radio
FM
Additional microphone(s)
	Noise cancellation

Cellular

4G (FDD)
Bands 1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800 DD)	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), 40(2300), 41(2600+)	Bands 38(2600), 40(2300), 41(2600+)
3G
Bands 1(2100), 2(1900), 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	LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
Dual SIM
Yes	Yes
SIM type
Nano SIM	Nano SIM
VoLTE
	Yes

Buyers information

In The Box
This is the official Samsung Galaxy M21 User Guide in English provided from the manufacturer.	22.5W Charger, Simple protective cover, USB Type-C cable, SIM eject tool, User guide, Warranty card

Availability

Officially announced
Mar 18, 2020	Apr 30, 2020

Alternative variants

with 128GB storage


RAM	6GB
Internal storage	128GB

with 128GB storage


RAM	4GB
Internal storage	128GB

Links

Full specifications
Samsung Galaxy M21 Specs	Xiaomi Redmi Note 9 Specs
PhoneArena Review
	Xiaomi Redmi Note 9 Review
User Reviews
	Xiaomi Redmi Note 9 User Reviews