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Xiaomi Redmi Note 8 2021 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.

Comparison mode:
Specs Size
Differences only
Xiaomi Redmi Note 8 2021
8.5
Xiaomi Redmi Note 9
Xiaomi Redmi Note 8 2021 Xiaomi Redmi Note 9
Released · May 27, 2021
Released · May 12, 2020
6.3-inch
6.5-inch
Quad camera
Quad camera
4GB · 64GB
3GB · 64GB
4000 mAh
5020 mAh
Check prices Check prices

Design

Dimensions
6.23 x 2.96 x 0.33 inches
158.3 x 75.3 x 8.35 mm 		6.39 x 3.04 x 0.35 inches
162.3 x 77.2 x 8.9 mm
Weight
6.70 oz (190.0 g) 7.02 oz (199.0 g)
Materials
Back: Glass
Frame: Plastic 		Frame: Plastic
Resistance
Splash
Biometrics
Fingerprint (touch) Fingerprint (touch)
Keys
Right: Volume control, Lock/Unlock key Right: Volume control, Lock/Unlock key
Colors
Neptune Blue, Moonlight White, Space Black, Forest green, Polar white, Midnight gray

Display

Size
6.3-inch 6.5-inch
Resolution
2340x1080px, 19.5:9 ratio, 409 PPI 2340x1080px, 19.5:9 ratio, 395 PPI
Technology
IPS LCD IPS LCD
Refresh rate
60Hz
Screen-to-body
81.89 % 83.52 %
Features
Scratch-resistant glass (Corning Gorilla Glass 5), Ambient light sensor, Proximity sensor Scratch-resistant glass (Corning Gorilla Glass 5), Ambient light sensor, Proximity sensor

Hardware

System chip
MediaTek Helio G85 MT6769Z (12 nm) MediaTek Helio G85 (12 nm)
Processor
Octa-core
2000 MHz
Cortex-A75 		Octa-core
2000 MHz
Arm Cortex-A75 and ArmCortex-A55
GPU
Mali G52 MC2 Mali G52 MC2
RAM
4GB (LPDDR4) 3GB (LPDDR4)
Internal storage
64GB (eMMC 5.1) 64GB (eMMC 5.1)
Storage expansion
microSDXC up to 128 GB microSDXC up to 128 GB
OS
Android (11), MIUI 12.5 UI Android (10), Xiaomi MI UI

Battery

Capacity
4000 mAh 5020 mAh
Type
Li - Polymer Li - Polymer
Charging
Fast charging Fast charging, Reverse wired charging
Charge speed
Wired: 18.0W Wired: 18.0W
PhoneArena Battery Tests
Battery Life Estimate
Untested
Browsing
Untested
Video
Untested
Gaming
Untested
Battery Life Estimate
Untested
Browsing
Untested
Video
10h 43min
Gaming
7h 34min
Learn more on our PhoneArena Battery Test Results page

Camera

Rear
Quad camera Quad camera
Main camera
48 MP (Autofocus)
Aperture size: F1.8
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
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
2 MP (Macro, Autofocus)
Aperture size: F2.4
Pixel size: 1.75 μm 		2 MP (Macro, Autofocus)
Aperture size: F2.4
Pixel size: 1.75 μm
Fourth camera
2 MP (Depth information)
Aperture size: F2.4
Pixel size: 1.75 μm 		2 MP
Aperture size: F2.4
Sensor size: 1/5"
Pixel size: 1.7 μm
Flash
LED LED
Video recording
1920x1080 (Full HD) (30 fps), 1280x720 (HD) (120 fps) 1920x1080 (Full HD) (30 fps), 1280x720 (HD) (120 fps)
Front
13 MP, Video capture: 1920x1080 (Full HD) 13 MP (HDR), Video capture: 1920x1080 (Full HD)

Connectivity & Features

Bluetooth
5.2 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, Cell ID, Wi-Fi positioning GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
Sensors
Accelerometer, Gyroscope, Compass Accelerometer, Gyroscope, Compass
Other
Infrared NFC, Infrared

Multimedia

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

Cellular

4G (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), 20(800 DD), 28(700 APT)
4G (TDD)
Bands 38(2600), 40(2300) 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, HSPA LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
Dual SIM
Yes Yes
SIM type
Nano SIM Nano SIM
HD Voice
Yes
VoLTE
Yes Yes

Buyers information

In The Box
Adapter, USB Type-C cable, SIM Eject Tool, Protective Case, Quick Start Guide, Warranty Card 22.5W Charger, Simple protective cover, USB Type-C cable, SIM eject tool, User guide, Warranty card

Availability

Officially announced
May 24, 2021 Apr 30, 2020

Alternative variants

With 128GB internal stotrage
Internal storage 128GB
with 128GB storage
RAM 4GB
Internal storage 128GB
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