Samsung Galaxy A31 vs Xiaomi Redmi Note 9 Pro: Comparison

Comparison of features, performance, design, battery, camera and connectivity between the following smartphones: Samsung Galaxy A31 vs Xiaomi Redmi Note 9 Pro. The complete information of specifications to decide which to buy.

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Technical data sheets

Basics

Score

Ki Price/Quality
Score
7.8 Ki Price/Quality
Score
8.5 Ki Price/Quality
Score
Design and Screen score 7.1 Design & Materials 7.5 Design & Materials
Performance and Hardware score 6.8 Performance & Hardware 7.3 Performance & Hardware
Camera score 6.0 Camera 7.5 Camera
Connectivity score 7.4 Connectivity 7.6 Connectivity
Battery score 8.0 Battery 8.4 Battery

User reviews

User score
7.1
25 opinions
8.7
82 opinions

Summary

Inches 6.4" 6.67"
Resolution FHD+ FHD+
Usable surface 84% useful 84% useful
Aspect Ratio 20:9 20:9
Dimensions 73.1 mm
159.3 mm
8.6 mm
76.7 mm
165.7 mm
8.8 mm
Weight 185 g 209 g
Micro Helio P65
Octa-Core
SnapD. 720g
Octa-Core
RAM 4 GB RAM 6 GB RAM
Storage 128 GB 64 GB
AnTuTu 183.200
v8
274.596
v8
Battery 5000 mAh 5020 mAh
Main Camera 1
48 Mpx · ƒ/2.0

2 3 4
1
64 Mpx · ƒ/1.89
Bright S5KGW1
2 3 4
Selfie Camera SELF 20 Mpx · ƒ/2.2 SELF 16 Mpx · ƒ/2.48
Bands
OS Android 10 Q Android 10 Q

Brand

Brand Samsung Xiaomi
Aliases SM-A315F M2003J6B2G

Release Date

Release date March 2020,
1 year ago
March 2020,
1 year ago
State On Sale On Sale
Market Global Global

Design & Materials

Structure

Samsung Galaxy A31
Xiaomi Redmi Note 9 Pro
Samsung Galaxy A31
Xiaomi Redmi Note 9 Pro
Size
73.1 mm
159.3 mm
8.6 mm
Print 3D Model
76.7 mm
165.7 mm
8.8 mm
Print 3D Model
Weight 185 g 209 g
Usable surface 84 % 84 %
Materials Plastic Plastic, P2i Nano coating
Resistance - -
Colors
Black

White

Blue

Red
White

Gray

Green

Screen

Diagonal 6.4" 6.67"
Type Super Amoled LCD IPS
Aspect Ratio 20:9 20:9
Resolution FHD+
1080 x 2400 px
FHD+
1080 x 2400 px
Density 411 Pixels per inch 395 Pixels per inch

Others

Others
  • Water Drop Notch
  • Scratch resistant
  • 2.5D curved glass screen
  • Capacitive
  • Multi-touch
  • Frameless
  • Infinity-U display
  • Hole-punch Notch
  • Brightnes 450 cd/m² (typ)
  • 1500:1 contrast ratio
  • TÜV Rheinland Eye Comfort Certification
  • HDR10
  • 84% NTSC
  • LED Notifications
  • Scratch resistant
  • 2.5D curved glass screen
  • Corning Gorilla Glass 5
  • Capacitive
  • Multi-touch
  • Frameless

User reviews

Is it a drop-resistant and scratch-resistant smartphone?
5.7
8.2
Do you think it's a nice phone?
8.6
9.2
Is it comfortable?
8.2
8.6
Can you see it well in the sunlight?
8.6
8.2
Number of reviews
25 opinions
82 opinions

Performance & Hardware

Processor

Model MediaTek Helio P65 (MT6768) Qualcomm Snapdragon 720G
CPU 2x Cortex-A75 2.0 GHz + 6x Cortex-A55 1.5 GHz 2x Kryo 360 2.3 GHz + 6x Kryo 360 1.7 GHz
Type Octa-Core Octa-Core
Manufacturing 12 nm 8 nm
Frequency 2 GHz 2.3 GHz
64 Bits Yes Yes

Graphics

GPU Arm Mali-G52 Qualcomm Adreno 618

RAM

RAM 4 GB 6 GB
Type LPDDR4X RAM LPDDR4X RAM

Storage

Capacity 128 GB 64 GB
Type eMMC 5.1 Storage UFS Storage 2.1
SD Slot Yes ,
Independent SD slot
Yes ,
Independent SD slot

Security

Fingerprint Yes, in screen Yes, on the side

Sensors

Sensors
  • Fingerprint
  • Proximity
  • Light sensor
  • Accelerometer
  • Compass
  • Gyroscope
  • Hall
  • Fingerprint
  • Proximity
  • Light sensor
  • Accelerometer
  • Compass
  • Gyroscope

Others

Notifications LED -- LED Notifications
Cooling system No No
Gaming buttons No No

User reviews

Does it have good sound?
7.0
8.3
Does it work smoothly in everyday use?
8.1
9.1
What's your experience been with demanding games?
6.9
9.0
Number of reviews
25 opinions
82 opinions

Camera

Main

No. of cameras Quad rear camera Quad rear camera
1
Camera type

Standard

Standard
Resolution 48 Mpx 64 Mpx
Sensor Unknown Samsung Bright S5KGW1
Type CMOS ISOCELL
Aperture ƒ/ 2.0 ƒ/ 1.89
ISO -- --
Pixel size 0.80 µm 0.80 µm
Pixel Binning -- 1-4 (2x2)
Sensor size -- 1/1.72
2
Camera type

Wide Angle lens

Wide Angle lens
Resolution
8 Mpx
8 Mpx
Sensor
Unknown
GalaxyCore GC8034
Type
--
CMOS BSI
Aperture
ƒ/ 2.2
ƒ/ 2.2
ISO
--
--
Pixel size
--
1.12 µm
Pixel Binning
--
--
Sensor size
--
1/4
3
Camera type

Portrait mode (depth)

Portrait mode (depth)
Resolution
5 Mpx
2 Mpx
Sensor
Unknown
GalaxyCore GC02M1
Type
--
CMOS
Aperture
ƒ/ 2.4
ƒ/ 2.4
ISO
--
--
Pixel size
--
1.75 µm
Pixel Binning
--
--
Sensor size
--
--
4
Camera type

Macro lens

Macro lens
Resolution
5 Mpx
5 Mpx
Sensor
Unknown
Samsung S5K5E9
Type
--
ISOCELL
Aperture
ƒ/ 2.4
ƒ/ 2.4
ISO
--
--
Pixel size
--
1.12 µm
Pixel Binning
--
--
Sensor size
--
1/5

Features

Flash LED LED
Optical Stabilisation No No
Slow Motion Video No,
30 fps
Yes,
960 fps
Others
  • Digital zoom
  • Quadruple camera
  • Autofocus
  • Touch focus
  • Continuous shooting
  • Geotagging
  • Panorama
  • HDR
  • Face detection
  • White balance settings
  • ISO settings
  • Exposure compensation
  • Scene mode
  • Self-timer
  • 4K Video
  • Digital zoom
  • Quadruple camera
  • Digital image stabilization
  • Autofocus
  • Touch focus
  • Geotagging
  • HDR
  • Face detection
  • White balance settings
  • ISO settings
  • Exposure compensation
  • Scene mode
  • Self-timer
  • Night Mode

Selfie

SELF
Camera type

Dedicated

Dedicated
Resolution 20 Mpx 16 Mpx
Sensor Hynix HI-2021 Unknown
Type CMOS CMOS
Aperture ƒ/ 2.2 ƒ/ 2.48
ISO -- --
Pixel size 1.00 µm 1.00 µm
Pixel Binning 1-4 (2x2) --
Sensor size -- --
Others
--
--

DxOMark Score

DxOMark Score -- --

User reviews

Quality of daytime photos
7.9
9.0
Quality of nighttime photos
5.5
7.9
Quality of selfies
7.8
8.5
Does it have a powerful flash?
8.4
8.5
Number of reviews
25 opinions
82 opinions

Connectivity

Network compatibility

5G -- --
4G LTE
  • B1 (2100)
  • B2 (1900)
  • B3 (1800)
  • B4 (1700/2100 AWS 1)
  • B5 (850)
  • B7 (2600)
  • B8 (900)
  • B12 (700)
  • B13 (700)
  • B17 (700)
  • B20 (800)
  • B28b (700)
  • B28a (700)
  • B66 (1700/2100)
  • B1 (2100)
  • B2 (1900)
  • B3 (1800)
  • B4 (1700/2100 AWS 1)
  • B5 (850)
  • B7 (2600)
  • B8 (900)
  • B20 (800)
  • B28b (700)
  • B28a (700)
  • B38 (TDD 2600)
  • B40 (TDD 2300)
  • B41 (TDD 2500)
3G
  • B1 (2100)
  • B2 (1900)
  • B5 (850)
  • B8 (900)
  • B1 (2100)
  • B2 (1900)
  • B4 (1700/2100 AWS A-F)
  • B5 (850)
  • B8 (900)
2G
  • B2 (1900)
  • B3 (1800)
  • B5 (850)
  • B8 (900)
  • B2 (1900)
  • B3 (1800)
  • B5 (850)
  • B8 (900)

SIM card

Dual SIM Dual Sim Dual Standby Dual Sim Dual Standby
Type
  • Nano SIM
  • Nano SIM
  • Nano SIM
  • Nano SIM

Wi-Fi

Wi-Fi
  • 802.11a
  • 802.11b
  • 802.11g
  • 802.11n
  • 802.11n 5GHz
  • 802.11ac
  • 802.11a
  • 802.11b
  • 802.11g
  • 802.11n
  • 802.11n 5GHz
  • 802.11ac
Others
  • Dual band
  • Wi-Fi Hotspot
  • Wi-Fi Direct
  • Dual band
  • Wi-Fi Hotspot
  • Wi-Fi Direct
  • Wi-Fi Display
  • Wi-Fi MiMO

Bluetooth

Version Bluetooth 5.0 Bluetooth 5.0 LE Low energy consumption
Others
  • A2DP (Advanced Audio Distribution Profile)
  • AVRCP (Audio/Visual Remote Control Profile)
  • DIP (Device ID Profile)
  • HFP (Hands-Free Profile)
  • HID (Human Interface Profile)
  • HSP (Headset Profile)
  • MAP (Message Access Profile)
  • PAN (Personal Area Networking Profile)
  • OPP (Object Push Profile)
  • PBAP/PAB (Phone Book Access Profile)
  • HOGP
  • A2DP (Advanced Audio Distribution Profile)
  • EDR (Enhanced Data Rate)
  • HID (Human Interface Profile)
  • LE (Low Energy)
  • APT-x

Navigation

Navigation
  • GPS
  • A-GPS
  • GLONASS
  • Beidou
  • GPS
  • A-GPS
  • GLONASS
  • Beidou
  • NavIC System

USB

USB
  • Charging
  • Mass Storage
  • USB On-The-Go (OTG)
  • Charging
  • Mass Storage
  • USB On-The-Go (OTG)
  • USB Type C

SAR

European measurement

The European Union sets a limit of 2 W/kg averaged over 10 grams of tissue.

-- 0.662 W/Kg on head
1.021 W/Kg on body
American measurement

The FCC limit is 1.6 W/kg measured in a volume of 1 gram of tissue

-- 0.870 W/Kg on head
1.040 W/Kg on body

Others

Others
  • NFC
  • Audio Jack
  • Radio FM
  • Computer sync
  • OTA sync
  • Tethering.
  • VoLTE
  • NFC
  • Audio Jack
  • Radio FM
  • Computer sync
  • OTA sync
  • Infrared
  • Tethering.
  • VoLTE
  • VoWiFi

User reviews

Does it have good coverage for calls?
8.9
8.9
Quality of the GPS
8.5
8.8
And the WiFi?
8.5
9.1
Number of reviews
25 opinions
82 opinions

Battery

Battery

Capacity
5000 mAh
5020 mAh
Type Li-Ion Li-Polymer
Fast charge Yes,
15.0W
Yes,
30.0W
Others
  • Non-removable
  • Non-removable

User reviews

How long does the battery last?
  • 0%
    Less than half day
  • 4%
    Less than a day
  • 20%
    One day
  • 68%
    More than one day
  • 8%
    Two days or more
  • 0%
    Less than half day
  • 5%
    Less than a day
  • 22%
    One day
  • 57%
    More than one day
  • 16%
    Two days or more
Number of reviews
25 opinions
82 opinions

Software

Software

Operating System
  • Android 10
    Android 10 Q, 1 year ago
  • MIUI V12 (Android 10)
    Android 10 Q, 1 year ago
Google Services (official) Yes Yes

User reviews

Did it come with preinstalled applications?
  • 4%
    It comes with a clean operating system
  • 80%
    It has preinstalled apps but they don't bother me
  • 16%
    It has preinstalled apps that I can't uninstall
  • 4%
    It comes with a clean operating system
  • 76%
    It has preinstalled apps but they don't bother me
  • 21%
    It has preinstalled apps that I can't uninstall
Do you regularly receive updates?
  • 0%
    Never
  • 0%
    Once a year
  • 53%
    Every six months
  • 47%
    Every two months or less
  • 3%
    Never
  • 0%
    Once a year
  • 56%
    Every six months
  • 41%
    Every two months or less
Number of reviews
25 opinions
82 opinions

Prices

Prices

Prices

Prices for the version Global  •  4GB  •  128GB Change

Prices

Prices for the version Global  •  6GB  •  64GB Change