Samsung Galaxy A31 vs Xiaomi Redmi Note 9S 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.

Samsung Galaxy A31 Xiaomi Redmi Note 9S
Released · Apr 27, 2020
Released · Apr 07, 2020
6.4-inch
6.7-inch
Quad camera
Quad camera
4GB · 64GB
4GB · 64GB
5000 mAh
5020 mAh

Design

Dimensions
6.27 x 2.88 x 0.34 inches
159.3 x 73.1 x 8.6 mm
6.53 x 3.02 x 0.35 inches
165.75 x 76.68 x 8.8 mm
Weight
6.53 oz (185.0 g) 7.37 oz (209.0 g)
Materials
Back: Plastic Back: Glass (Corning Gorilla Glass 5)
Biometrics
Optical in-screen fingerprint Fingerprint (touch)
Keys
Right: Volume control, Lock/Unlock key Right: Volume control, Lock/Unlock key
Colors
Prism Crush black, Prism Crush blue, Prism Crush red, Prism Crush white Interstellar grey, Aurora blue, Glacier white

Display

Size
6.4-inch 6.7-inch
Resolution
2400x1080px, 20:9 ratio, 411 PPI 2400x1080px, 20:9 ratio, 395 PPI
Technology
Super AMOLED IPS LCD
Refresh rate
60Hz
Screen-to-body
84.88 % 84.42 %
Features
Ambient light sensor, Proximity sensor HDR support, Scratch-resistant glass (Corning Gorilla Glass 5), Ambient light sensor, Proximity sensor

Hardware

System chip
MediaTek Helio P65 MT6768 (12 nm) Qualcomm Snapdragon 720G SM7125 (8 nm)
Processor
Octa-core
2x 2.0GHz Cortex-A75 + 6x 2.0GHz Cortex-A55
Octa-core
2300 MHz
Kryo 465
GPU
Mali-G52 MC2 Adreno 618
RAM
4GB (LPDDR4) 4GB (LPDDR4)
Internal storage
64GB (eMMC 5.1), available to use: 46.2 GB 64GB
Storage expansion
microSDXC up to 512 GB microSDXC up to 512 GB
OS
Android (10), Samsung One UI Android (11, 10)

Battery

Capacity
5000 mAh 5020 mAh
Type
Li - Polymer Li - Polymer
Charging
Fast charging Fast charging
Charge speed
Wired: 15.0W

Camera

Rear
Quad 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
Sensor size: 1/4"
Pixel size: 1.12 μm
8 MP (Ultra-wide)
Aperture size: F2.2
Pixel size: 1.12 μm
Third camera
5 MP (Macro)
Aperture size: F2.4
5 MP (Macro, Autofocus)
Aperture size: F2.4
Pixel size: 1.12 μm
Fourth camera
5 MP (Depth information)
Aperture size: F2.4
2 MP (Depth information)
Aperture size: F2.4
Pixel size: 1.75 μm
Flash
LED Dual LED
Video recording
1920x1080 (Full HD) (30 fps) 3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (120 fps), 1280x720 (HD) (960 fps)
Front
20 MP, Video capture: 1920x1080 (Full HD) 16 MP (HDR, Slow-motion videos), 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
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 Accelerometer, Gyroscope, Compass
Other
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)
4G (TDD)
Bands 38(2600), 40(2300), 41(2600+) Bands 38(2600), 40(2300)
3G
Bands 1(2100), 2(1900), 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
Dual SIM
Yes Yes
SIM type
Nano SIM Nano SIM
VoLTE
Yes

Regulatory Approval

FCC approval
Date approved: Mar 08, 2020
FCC ID value: A3LSMA315GL
Measured SAR
Head: 0.53 W/kg
Body: 0.56 W/kg
Simultaneous Transmission: 1.42 W/kg
Wireless Router: 0.65 W/kg
Phablet: 0.89 W/kg

Buyers information

MSRP
€ 300 $ 249
In The Box
22.5W Wire charger, Simple protective cover, USB Type-C cable, SIM eject tool, User guide, Warranty card

Availability

Officially announced
Mar 24, 2020 Mar 23, 2020

Alternative variants

with 128GB storage
RAM 6GB
Internal storage 128GB
with 128GB storage
RAM 6GB
Internal storage 128GB
MSRP $ 279
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