Samsung Galaxy A21 vs Xiaomi Redmi Note 10S Specs Comparison

Availability

Officially announced
Apr 08, 2020	Mar 04, 2021
Prices (MSRP)
$250	$229

Design

Dimensions
6.61 x 3.02 x 0.32 inches 167.8 x 76.7 x 8.1 mm	6.32 x 2.93 x 0.33 inches 160.46 x 74.5 x 8.29 mm
Weight
6.81 oz (193.0 g)	6.31 oz (178.8 g)
Materials
Back: Plastic Frame: Plastic
Resistance
	Splash; IP53
Biometrics
Fingerprint (touch)	2D Face unlock, Fingerprint (touch)
Keys
Right: Volume control, Lock/Unlock key	Right: Volume control, Lock/Unlock key
Colors
Black	Onyx Gray, Pebble White, Lake Green

Display

Size
6.5-inch, 79.20% screen-to-body	6.4-inch, 83.55% screen-to-body
Type
IPS LCD, 60Hz	AMOLED, 1100 nits
Resolution
1600x720px, 20:9 ratio, 270 PPI	2400x1080px, 20:9 ratio, 409 PPI
Protection
	Corning Gorilla Glass 3

Hardware

System chip
Mediatek Helio P35 MT6765 (12 nm)	MediaTek Helio G95 (12 nm)
Processor
Octa-core 4x2.3GHz Cortex-A53 4x1.8G​Hz Cortex-A53	Octa-core 2050 MHz Arm Cortex-A55 and Arm Cortex-A76
GPU
PowerVR GE8320	Arm Mali-G76 MC4
Memory
3GB (LPDDR4)/32GB (eMMC 5.1)	6GB (LPDDR4)/64GB (UFS 2.2) 6GB/128GB 8GB/128GB
Storage expansion
microSDXC up to 512 GB	not expandable
OS
Android (10)	Android (11)

Battery

Type
4000 mAh, Li - Polymer	5000 mAh
Charging
Fast charging	Fast charging
Charge speed
Wired: 15.0W	Wired: 33.0W

Camera

Rear
Quad camera	Quad camera
Main camera
16 MP (PDAF) Aperture size: F1.8 Sensor size: 1/3.06" Pixel size: 1 μm	64 MP (Autofocus) Aperture size: F1.8 Sensor size: 1/1.97” Pixel size: 0.7 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
Third camera
2 MP (Macro) Aperture size: F2.4	2 MP (Macro) Aperture size: F2.4
Fourth camera
2 MP (Depth information) Aperture size: F2.4	2 MP (Depth information) Aperture size: F2.4
Flash
LED	LED
Video recording
1080p (30 fps)	Yes
Front
13 MP Video capture: 1080p	13 MP

Connectivity & Features

Bluetooth
5.0	5.0
WLAN
a,b,g,n,ac,dual-band Wi-Fi Direct, Hotspot 802.11 a, b, g, n, ac	a,b,g,n,ac,dual-band Wi-Fi Direct, Hotspot 802.11 a, b, g, n, ac
USB
Type-C, USB 2.0	Type-C
Sensors
Accelerometer, Gyroscope, Compass, Ambient light sensor, Proximity sensor	Accelerometer, Ambient light sensor, Proximity sensor
Hearing aid compatible
M4/T3
Location
GPS, A-GPS, Glonass, BeiDou, Cell ID, Wi-Fi positioning	GPS, A-GPS, Glonass, Galileo, BeiDou, QZSS, SBAS, Cell ID, Wi-Fi positioning
Other
NFC	NFC, Infrared

Multimedia

Headphones
3.5mm jack	3.5mm jack
Speakers
Earpiece, Loudspeaker	Earpiece, Loudspeaker, Multiple speakers
Screen mirroring
Wireless screen share	Wireless screen share
Radio
FM
Additional microphone(s)
	Noise cancellation

Cellular

4G (FDD) Bands
1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 25, 26, 28, 66, 71	1, 2, 3, 4, 5, 7, 8, 20, 28
4G (TDD) Bands
38, 39, 40, 41	38, 40, 41
3G Bands
1, 2, 4, 5, 8	1, 2, 4, 5, 8
Data Speed
LTE-A Cat 6 (300/50 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s	LTE-A Cat 12/13 (600/150 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS
Dual SIM
	Yes
SIM type
Nano SIM	Nano SIM
HD Voice
Yes

Regulatory Approval

FCC approval
Date approved: Apr 17, 2020 FCC ID value: ZCASMA215U	Date approved: Mar 28, 2021 FCC ID value: 2AFZZK7BG
Measured SAR
Head: 0.42 W/kg Body: 1.27 W/kg Simultaneous Transmission: 1.27 W/kg Wireless Router: 1.27 W/kg	Head: 1.07 W/kg Body: 0.81 W/kg Simultaneous Transmission: 1.58 W/kg Wireless Router: 1.00 W/kg

Alternative variants

for Verizon

4G (FDD) Bands	1, 2, 3, 5, 7, 8, 20, 28
4G (TDD) Bands	38, 40, 41
3G Bands	5, 8, 2, 1

With 128GB storage

Memory	128GB

for Sprint

4G (FDD) Bands	2, 3, 4, 5, 7, 12, 13, 25, 26, 66, 71
4G (TDD) Bands	41

With 8GB RAM and 128GB storage

Memory	8GB/128GB

Links

Full specifications
Samsung Galaxy A21 Specs	Xiaomi Redmi Note 10S Specs
User Reviews
Samsung Galaxy A21 User Reviews