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Samsung Galaxy A31 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
Samsung Galaxy A31
8.5
Xiaomi Redmi Note 9
Samsung Galaxy A31 Xiaomi Redmi Note 9
Released · Apr 27, 2020
Released · May 12, 2020
6.4-inch · 2400x1080px
6.5-inch · 2340x1080px
Quad camera
Quad camera
4GB · 64GB
3GB · 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 		6.39 x 3.04 x 0.35 inches
162.3 x 77.2 x 8.9 mm
Weight
6.53 oz (185.0 g) 7.02 oz (199.0 g)
Materials
Back: Plastic Frame: Plastic
Resistance
Splash
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 Forest green, Polar white, Midnight gray

Display

Size
6.4-inch 6.5-inch
Resolution
2400x1080px, 20:9 ratio, 411 PPI 2340x1080px, 19.5:9 ratio, 395 PPI
Technology
Super AMOLED IPS LCD
Refresh rate
60Hz
Screen-to-body
84.88 % 83.52 %
Features
Ambient light sensor, Proximity sensor Scratch-resistant glass (Corning Gorilla Glass 5), Ambient light sensor, Proximity sensor

Hardware

System chip
MediaTek Helio P65 MT6768 (12 nm) MediaTek Helio G85 (12 nm)
Processor
Octa-core
2x 2.0GHz Cortex-A75 + 6x 2.0GHz Cortex-A55 		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), available to use: 46.2 GB 64GB (eMMC 5.1)
Storage expansion
microSDXC up to 512 GB microSDXC up to 128 GB
OS
Android (10), Samsung One UI Android (10), Xiaomi MI UI

Battery

Capacity
5000 mAh 5020 mAh
Type
Li - Polymer Li - Polymer
Charging
Fast charging Fast charging, Reverse wired charging
Charge speed
Wired: 15.0W 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 (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
Sensor size: 1/4"
Pixel size: 1.2 μm
Third camera
5 MP (Macro)
Aperture size: F2.4 		2 MP (Macro, Autofocus)
Aperture size: F2.4
Pixel size: 1.75 μm
Fourth camera
5 MP (Depth information)
Aperture size: F2.4 		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) 1920x1080 (Full HD) (30 fps), 1280x720 (HD) (120 fps)
Front
20 MP, 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, Compass Accelerometer, Gyroscope, Compass
Other
NFC 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) 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

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
In The Box
22.5W Charger, Simple protective cover, USB Type-C cable, SIM eject tool, User guide, Warranty card

Availability

Officially announced
Mar 24, 2020 Apr 30, 2020

Alternative variants

with 128GB storage
RAM 6GB
Internal storage 128GB
with 128GB storage
RAM 4GB
Internal storage 128GB
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