Xiaomi Redmi Note 9S vs Samsung Galaxy A21s
Compare phone and tablet specifications of up to three devices. Type a model name in the search field of our phone specs comparison tool or pick a popular device from the ones below.
Display
Size
Resolution
Technology
IPS LCD
TFT
Screen-to-body
84.42 %
82.94 %
Features
HDR video support, Scratch-resistant glass (Corning Gorilla Glass 5), Ambient light sensor, Proximity sensor
Proximity sensor
Hardware
System chip
Qualcomm Snapdragon 720G SM7125
Samsung Exynos 850
Processor
GPU
Adreno 618
Mali-G76
RAM
Internal storage
64GB
32GB (eMMC 5.1), available to use: 19.5 GB
Storage expansion
microSDXC up to 512 GB
microSDXC up to 512 GB
OS
Android (10)
Android (10), Samsung One UI
Battery
Capacity
5020 mAh
5000 mAh
Type
Li - Polymer, Not user replaceable
Li - Polymer, Not user replaceable
Charging
Fast charging
Fast charging
Camera
Rear
Quad camera
Quad camera
Main camera
Specifications
Aperture size: F1.8; Sensor size: 1/2"; Pixel size: 0.8 μm
Aperture size: F2.0; Focal length: 26 mm; Sensor size: 1/2"; Pixel size: 0.8 μm
Second camera
8 MP (Ultra-wide)
8 MP (Ultra-wide)
Specifications
Aperture size: F2.2; Pixel size: 1.12 μm
Aperture size: F2.2; Sensor size: 1/4"; Pixel size: 1.12 μm
Third camera
5 MP (Macro, Autofocus)
2 MP (Macro)
Specifications
Aperture size: F2.4; Pixel size: 1.12 μm
Aperture size: F2.4
Fourth camera
2 MP (Depth information)
2 MP (Depth information)
Specifications
Aperture size: F2.4; Pixel size: 1.75 μm
Aperture size: F2.4
Video recording
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (120 fps), 1280x720 (HD) (960 fps)
1920x1080 (Full HD) (30 fps)
Front
16 MP (HDR, Slow-motion videos)
13 MP
Design
Dimensions
Weight
the average is 6.2 oz (176 g)
the average is 6.2 oz (176 g)
Materials
Back: Glass (Corning Gorilla Glass 5)
Biometrics
Fingerprint (touch)
2D Face unlock, Fingerprint (touch)
Colors
Interstellar grey, Aurora blue, Glacier white
Black, White, Blue, Red
Cellular
LTE (FDD)
Bands 1(2100), 2(1900), 3(1800), 5(850), 7(2600), 8(900), 20(800 DD), 28(700 APT)
LTE (TDD)
Bands 38(2600), 40(2300)
Bands 38(2600), 40(2300), 41(2600+)
UMTS
850, 900, 1700/2100, 1900, 2100 MHz
850, 900, 1900, 2100 MHz
Data Speed
Dual SIM
Yes
Yes
SIM type
Nano SIM
Nano SIM
VoLTE
Yes
Multimedia
Headphones
3.5mm jack
3.5mm jack
Speakers
Earpiece, Loudspeaker
Earpiece, Loudspeaker
Screen mirroring
Wireless screen share
Wireless screen share
Additional microphone(s)
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 a, b, g, n, ac, dual-band; Wi-Fi Direct, Hotspot
USB
Type-C (reversible)
Type-C (reversible), USB 2.0
Features
Charging
Charging
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
Other
Infrared
NFC
Buyers information
In The Box
22.5W Wire charger, Simple protective cover, USB Type-C cable, SIM eject tool, User guide, Warranty card
Price
$ 249
