Xiaomi Redmi Note 8 2021 vs Samsung Galaxy S9 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.

9.0
Samsung Galaxy S9
Xiaomi Redmi Note 8 2021 Samsung Galaxy S9
Released · May 27, 2021
Released · Mar 16, 2018
6.3-inch · 2340x1080px
5.8-inch · 2960x1440px
Quad camera
Single camera
4GB · 64GB
4GB · 64GB
4000 mAh
3000 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
5.81 x 2.70 x 0.33 inches
147.7 x 68.7 x 8.5 mm
Weight
6.70 oz (190.0 g) 5.75 oz (163.0 g)
Materials
Back: Glass
Frame: Plastic
Back: Glass (Corning Gorilla Glass 5)
Frame: Aluminum
Resistance
Water, Dust; IP68
Biometrics
Fingerprint (touch) Iris scanner, 2D Face unlock, Fingerprint (touch)
Features
Notification light
Keys
Right: Volume control, Lock/Unlock key Left: Volume control, Other; Right: Lock/Unlock key
Colors
Neptune Blue, Moonlight White, Space Black, Midnight black, Coral blue, Titanium gray, Lilac purple, Burgundy red, Sunrise gold, Ice blue

Display

Size
6.3-inch 5.8-inch
Resolution
2340x1080px, 19.5:9 ratio, 409 PPI 2960x1440px, 18.5:9 ratio, 568 PPI
Technology
IPS LCD Super AMOLED
Refresh rate
60Hz
Screen-to-body
81.89 % 84.36 %
Features
Scratch-resistant glass (Corning Gorilla Glass 5), Ambient light sensor, Proximity sensor HDR support, Scratch-resistant glass (Corning Gorilla Glass 5), Ambient light sensor, Proximity sensor

Hardware

System chip
MediaTek Helio G85 MT6769Z (12 nm) Qualcomm Snapdragon 845 SDM845 (10 nm)
Processor
Octa-core
2000 MHz
Cortex-A75
Octa-core
2800 MHz
Kryo 385
GPU
Mali G52 MC2 Adreno 630
RAM
4GB (LPDDR4) 4GB (LPDDR4)
Internal storage
64GB (eMMC 5.1) 64GB
Storage expansion
microSDXC up to 128 GB microSDXC up to 400 GB
OS
Android (11), MIUI 12.5 UI Android (10, 9.0 Pie, 8.0 Oreo), Samsung One UI

Battery

Capacity
4000 mAh 3000 mAh
Type
Li - Polymer Li - Ion
Charging
Fast charging Qualcomm Quick Charge 2.0, Samsung Adaptive Fast Charging, Qi and Powermat wireless charging
Charge speed
Wired: 18.0W

Camera

Rear
Quad camera Single camera
Main camera
48 MP (Autofocus)
Aperture size: F1.8
Sensor size: 1/2"
Pixel size: 0.8 μm
12 MP (OIS, PDAF)
Aperture size: F1.5/F2.4
Sensor size: 1/2.55"
Pixel size: 1.4 μm
Second camera
8 MP (Ultra-wide)
Aperture size: F2.2
Sensor size: 1/4"
Pixel size: 1.12 μm
Third camera
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
Flash
LED LED
Video recording
1920x1080 (Full HD) (30 fps), 1280x720 (HD) (120 fps) 3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (240 fps), 1280x720 (HD) (960 fps)
HDR, Time-lapse video, Hyperlapse, Continuous autofocus, Object tracking, Picture-taking during video recording, Video calling, Video sharing
Front
13 MP, Video capture: 1920x1080 (Full HD) 8 MP (Autofocus, HDR), Video capture: 2560x1440 (QHD) (30 fps)

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
MIMO, Wi-Fi Direct, Hotspot
USB
Type-C, USB 2.0 Type-C, USB 3.1
Location
GPS, A-GPS, Glonass, Galileo, Cell ID, Wi-Fi positioning GPS, A-GPS, Glonass, Galileo, BeiDou
Sensors
Accelerometer, Gyroscope, Compass Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer
Other
Infrared NFC, ANT+

Multimedia

Headphones
3.5mm jack 3.5mm jack
Speakers
Earpiece, Loudspeaker Earpiece, Multiple speakers
Features
32-Bit DAC, aptX-HD
Screen mirroring
Wireless screen share Wireless screen share
Radio
FM
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), 12(700 a), 13(700 c), 14(700 PS), 17(700 b), 18(800 Lower), 19(800 Upper), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 29(700 d), 30(2300 WCS), 66(AWS-3), 71(600)
4G (TDD)
Bands 38(2600), 40(2300) Bands 38(2600), 39(1900+), 40(2300), 41(2600+), 46
3G
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, HSPA LTE-A Pro Cat 18 (1200/150 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA
Dual SIM
Yes
SIM type
Nano SIM Nano SIM
HD Voice
Yes
VoLTE
Yes

Regulatory Approval

FCC approval
Date approved: Jan 11, 2018
FCC ID value: A3LSMG960U
Measured SAR
Head: 0.35 W/kg
Body: 0.96 W/kg
Simultaneous Transmission: 1.59 W/kg
Wireless Router: 0.95 W/kg

Buyers information

MSRP
$ 720
In The Box
Adapter, USB Type-C cable, SIM Eject Tool, Protective Case, Quick Start Guide, Warranty Card

Availability

Officially announced
May 24, 2021 Feb 25, 2018

Alternative variants

With 128GB internal stotrage
Internal storage 128GB
International version
System chip Samsung Exynos 9 9810 (10 nm)
Processor Octa-core
2900 MHz
Exynos M3 and ARM Cortex-A55
GPU Mali-G72 MP18
FCC approval Date approved: Dec 27, 2017
FCC ID value: A3LSMG960F
Measured SAR Head: 0.26 W/kg
Body: 1.00 W/kg
Simultaneous Transmission: 1.56 W/kg
Wireless Router: 1.04 W/kg
with Dual SIM
System chip Samsung Exynos 9 9810 (10 nm)
Processor Octa-core
2900 MHz
Exynos M3 and ARM Cortex-A55
GPU Mali-G72 MP18
Dual SIM Yes
with 256 GB storage
Internal storage 256GB
MSRP $ 820
with 128 GB storage
Internal storage 128GB
MSRP $ 770
FCC OKs Cingular\'s purchase of AT&T Wireless