Samsung Galaxy A21 vs Xiaomi Redmi Note 9: Comparison

Comparison of features, performance, design, battery, camera and connectivity between the following smartphones: Samsung Galaxy A21 vs Xiaomi Redmi Note 9. The complete information of specifications to decide which to buy.

Compare
Samsung Galaxy A21Samsung Galaxy A21Global · 3GB · 32GB · A215F
Xiaomi Redmi Note 9Xiaomi Redmi Note 9Global · 3GB · 64GB
Technical data sheets

Basics
Samsung Galaxy A21
Samsung Galaxy A21
Global · 3GB · 32GB · A215F
View datasheet
vs
Xiaomi Redmi Note 9
Xiaomi Redmi Note 9
Global · 3GB · 64GB
View datasheet
vs

Score
Ki Cost-effective
Score		 6.3 Ki Cost-effective
Score 		7.3 Ki Cost-effective
Score
Design and Screen score 4.7Design & Materials 5.9Design & Materials
Performance and Hardware score 5.1Performance & Hardware 5.6Performance & Hardware
Camera score 5.2Camera 6.2Camera
Connectivity score 5.9 Connectivity 7.1 Connectivity
Battery score 5.1 Battery 7.0 Battery

User reviews
User score
--
3 reviews
7.1
166 reviews

Technical specifications of the Samsung Galaxy A21 vs Xiaomi Redmi Note 9

Specs Samsung Galaxy A21 price comparison Samsung Galaxy A21
Global · 3GB · 32GB · A215F 		stores to buy Xiaomi Redmi Note 9 Xiaomi Redmi Note 9
Global · 3GB · 64GB
Inches 6.5" 6.53"
Resolution HD+ FHD+
Usable surface 82% useful 83% useful
Aspect Ratio 20:9 19.5:9
Dimensions 75.3 mm
163.7 mm
9.0 mm 		77.2 mm
162.3 mm
8.9 mm
Weight 192 g 199 g
Micro Helio P35
Octa-Core 		Helio G85
Octa-Core
RAM 3 GB RAM 3 GB RAM
Storage 32 GB 64 GB
AnTuTu 103.115
v8 		225.154
v10
Battery 4000 mAh 5020 mAh
Main Camera 1
16 Mpx · ƒ/2.0

2 3 4 		1
48 Mpx · ƒ/1.79
S5KGM1
2 3 4
Selfie Camera SELF 13 Mpx · ƒ/2.0 SELF 13 Mpx · ƒ/2.25
Bands
OS Android 10 Q Android 12 Snow Cone

Brand
Brand Samsung Xiaomi
Aliases SM-A215F, SM-A215U, SM-A215W M2003J15SG

Release Date
Release date April 2020,
4 years ago 		January 2020,
4 years ago
State On Sale On Sale
Market Global Global

Design & Materials

Structure

Samsung Galaxy A21
Xiaomi Redmi Note 9
Samsung Galaxy A21
Xiaomi Redmi Note 9
Size
75.3 mm • 163.7 mm • 9.0 mm
See more details
 Print 3D Model
77.2 mm • 162.3 mm • 8.9 mm
See more details
 Print 3D Model
Weight 192 g 199 g
Usable surface 82 % 83 %
Materials Plastic Plastic, P2i Nano coating
Resistance - IP53
Colors
Black
White

Blue

Green

Screen
Diagonal 6.5" 6.53"
Type TFT LCD (IPS) LCD IPS
Aspect Ratio 20:9 19.5:9
Resolution HD+
720 x 1600 px 		FHD+
1080 x 2340 px
Density 270 Pixels per inch 395 Pixels per inch

Others

Others
  • Hole-punch Notch
  • Scratch resistant
  • Capacitive
  • Multi-touch
  • Frameless
  • Hole-punch Notch
  • Brightnes 450 cd/m² (typ)
  • 1500:1 contrast ratio
  • TÜV Rheinland Eye Comfort Certification
  • 84% NTSC
  • 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?
--
7.7
Do you think it's a nice phone?
--
8.3
Is it comfortable?
--
8.0
Can you see it well in the sunlight?
--
6.7
Number of reviews
--
166 reviews

Performance & Hardware

Processor
Model MediaTek Helio P35 MT6765 MediaTek Helio G85 (MT6769V/CZ)
CPU 4x Cortex-A53 2.3 GHz + 4x Cortex-A53 1.8 GHz 2x Cortex-A75 2.0 GHz + 6x Cortex-A55 1.8 GHz
Type Octa-Core Octa-Core
Manufacturing 14 nm 12 nm
64 Bits Yes Yes

Graphics
GPU PowerVR GE8320 Arm Mali-G52 MC2 950MHz

RAM
RAM 3 GB 3 GB
Type LPDDR4X RAM LPDDR4X RAM

Antutu
Score
103.115
Antutu v8
Overall performance better than 48% of devices
See more details
225.154
Antutu v10
Overall performance better than 61% of devices
See more details

Storage
Capacity 32 GB 64 GB
Type eMMC 5.1 Storage eMMC 5.1 Storage
SD Slot Yes ,
Independent SD slot 		Yes ,
Independent SD slot

Security
Fingerprint Yes, in the back Yes, in the back

Sensors
Sensors
  • Fingerprint
  • Proximity
  • Light sensor
  • Accelerometer
  • Compass
  • Gyroscope
  • Hall
  • Fingerprint
  • Light sensor
  • Accelerometer
  • Compass
  • Gyroscope
  • Ultrasonic proximity virtual

Audio

Audio
-
-

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

User reviews

Does it have good sound?
--
7.4
Does it work smoothly in everyday use?
--
6.9
What's your experience been with demanding games?
--
5.7
Number of reviews
--
166 reviews

Camera

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

Standard

Standard
Resolution 16 Mpx 48 Mpx
Sensor Unknown Samsung S5KGM1
Type CMOS ISOCELL
Aperture ƒ/ 2.0 ƒ/ 1.79
ISO -- --
Pixel size -- 0.80 µm
Pixel Binning -- 1-4 (2x2)
Sensor size -- 1/2"
2
Camera type

Wide Angle lens

Wide Angle lens
Resolution
8 Mpx
8 Mpx
Sensor
Unknown
Unknown
Type
--
--
Aperture
ƒ/ --
ƒ/ 2.2
Pixel size
--
1.12 µm
Pixel Binning
--
--
Sensor size
--
--
3
Camera type

Portrait mode (depth)

Portrait mode (depth)
Resolution
2 Mpx
2 Mpx
Sensor
Unknown
Unknown
Type
--
--
Aperture
ƒ/ 2.4
ƒ/ 2.4
Pixel size
--
1.70 µm
Pixel Binning
--
--
Sensor size
--
--
4
Camera type

Macro lens

Macro lens
Resolution
2 Mpx
2 Mpx
Sensor
Unknown
Unknown
Type
--
--
Aperture
ƒ/ 2.4
ƒ/ 2.4
Pixel size
--
1.75 µm
Pixel Binning
--
--
Sensor size
--
--

Features
Flash LED LED
Optical Stabilisation No No
Slow Motion Video No,
30 fps 		Yes,
120 fps
Others
  • Digital zoom
  • Quadruple camera
  • Autofocus
  • Touch focus
  • Continuous shooting
  • Geotagging
  • HDR
  • Face detection
  • White balance settings
  • ISO settings
  • Exposure compensation
  • Scene mode
  • Self-timer
  • 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 13 Mpx 13 Mpx
Sensor Unknown Unknown
Type -- CMOS
Aperture ƒ/ 2.0 ƒ/ 2.25
Pixel size -- 1.12 µm
Pixel Binning -- --
Sensor size -- --
Others
--
--

DxOMark Score
DxOMark Score -- --

User reviews

Quality of daytime photos
--
7.9
Quality of nighttime photos
--
5.7
Quality of selfies
--
6.9
Does it have a powerful flash?
--
7.6
Number of reviews
--
166 reviews

Connectivity

Network compatibility

5G -- --
4G LTE
  • B1 (2100)
  • B3 (1800)
  • B5 (850)
  • B7 (2600)
  • B8 (900)
  • B20 (800)
  • B38 (TDD 2600)
  • B40 (TDD 2300)
  • B41 (TDD 2500)
  • 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
  • 802.11b
  • 802.11g
  • 802.11n
  • 802.11a
  • 802.11b
  • 802.11g
  • 802.11n
  • 802.11n 5GHz
  • 802.11ac
Others
  • 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
  • Galileo
  • GPS (L1+L5)

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

 0.230 W/Kg on head
1.380 W/Kg on body 		0.795 W/Kg on head
1.138 W/Kg on body
American measurement

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

 -- 0.840 W/Kg on head
1.090 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?
--
8.4
Quality of the GPS
--
8.2
And the WiFi?
--
8.4
Number of reviews
--
166 reviews

Battery

Battery
Capacity
4000 mAh
See more details
5020 mAh
See more details
Type Li-Polymer Li-Polymer
Fast charge Yes,
15.0W 		Yes,
18.0W
Others
  • Non-removable
  • Reverse charging
  • Non-removable

User reviews

How long does the battery last?
--
  • 1%
    Less than half day
  • 10%
    Less than a day
  • 29%
    One day
  • 53%
    More than one day
  • 7%
    Two days or more
Number of reviews
--
166 reviews

Software

Software
Operating System
  • Android 10
    Android 10 Q, 4 years ago
  • MIUI V13 (Android 12)
    Android 12 Snow Cone, 3 years ago
Google Services (official) Yes Yes

User reviews

Did it come with preinstalled applications?
--
  • 5%
    It comes with a clean operating system
  • 76%
    It has preinstalled apps but they don't bother me
  • 20%
    It has preinstalled apps that I can't uninstall
Do you regularly receive updates?
--
  • 7%
    Never
  • 10%
    Once a year
  • 44%
    Every six months
  • 39%
    Every two months or less
Number of reviews
--
166 reviews
Prices
From $ 267 --
From $ 137 --

Others

Common comparisons