Samsung Galaxy A31 vs Xiaomi Redmi 9
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Display
Size
Resolution
Technology
Super AMOLED
IPS LCD
Screen-to-body
84.88 %
83.27 %
Features
Ambient light sensor, Proximity sensor
Oleophobic coating, Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor
Hardware
System chip
MediaTek Helio P65 MT6768
MediaTek Helio G80
Processor
GPU
Mali-G52 MC2
Mali G52 MC2
RAM
Internal storage
64GB (eMMC 5.1), available to use: 46.2 GB
32GB (eMMC 5.1)
Storage expansion
microSDXC up to 512 GB
microSDXC
OS
Android (10), Samsung One UI
Android
Battery
Capacity
5000 mAh
5020 mAh
Type
Li - Polymer, Not user replaceable
Not user replaceable
Charging
Fast charging
Qualcomm Quick Charge 3.0
Max charge speed
Wired: 15.0W
Wired: 18.0W
Camera
Rear
Quad camera
Quad camera
Main camera
Specifications
Aperture size: F2.0; Focal length: 26 mm; Sensor size: 1/2"; Pixel size: 0.8 μm
Aperture size: F2.2
Second camera
8 MP (Ultra-wide)
8 MP (Ultra-wide)
Specifications
Aperture size: F2.2; Sensor size: 1/4"; Pixel size: 1.12 μm
Aperture size: F2.2
Third camera
5 MP (Macro)
5 MP (Macro)
Specifications
Aperture size: F2.4
Aperture size: F2.4
Fourth camera
5 MP (Depth information)
2 MP (Depth information)
Specifications
Aperture size: F2.4
Video recording
1920x1080 (Full HD) (30 fps)
1920x1080 (Full HD)
Front
20 MP
8 MP (HDR)
Design
Dimensions
Weight
the average is 6.2 oz (178 g)
the average is 6.2 oz (178 g)
Materials
Back: Plastic
Biometrics
In-screen fingerprint
2D Face unlock, Fingerprint (touch)
Colors
Prism Crush black, Prism Crush blue, Prism Crush red, Prism Crush white
Carbon gray, Sunset purple, Ocean green
Cellular
LTE (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)
LTE (TDD)
Bands 38(2600), 40(2300), 41(2600+)
Bands 38(2600), 40(2300), 41(2600+)
UMTS
850, 900, 1900, 2100 MHz
850, 900, 1700/2100, 1900, 2100 MHz
Data Speed
Dual SIM
Yes
Yes
SIM type
Nano SIM
Nano SIM
HD Voice
Yes
VoLTE
Yes
Multimedia
Headphones
3.5mm jack
3.5mm jack
Speakers
Earpiece, Loudspeaker
Earpiece, Loudspeaker
Screen mirroring
Wireless screen share
Wireless screen share
Radio
FM
Additional microphone(s)
for Noise cancellation
for Noise cancellation
Connectivity & Features
Bluetooth
5.0
5.0
Wi-Fi
802.11 a, b, g, n, ac, dual-band; Wi-Fi Direct, Hotspot
802.11 b, g, n; Wi-Fi Direct, Hotspot
USB
Type-C (reversible), USB 2.0
Type-C (reversible), USB 2.0
Features
Charging, OTG
Charging
Location
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
GPS, A-GPS, Glonass, BeiDou, Cell ID, Wi-Fi positioning
Sensors
Accelerometer, Gyroscope, Compass
Accelerometer, Gyroscope, Compass
Other
NFC
NFC, Infrared
Buyers information
In The Box
10W Charger, TPU case, USB Type-C cable, SIM eject tool, Warranty card, User guide
Price
€ 300
