Xiaomi Redmi Note 9 vs Samsung Galaxy A21s vs Samsung Galaxy M12

General Info

Manufacturer
Xiaomi	Samsung	Samsung
Announced
2020, April 30	Expected Announcement - May 2020	2021, February 05
Status
Coming soon. Exp. release 2020, May	Rumored	Coming soon. Exp. release 2021, February
Colors
Forest Green, Midnight Grey, Polar White	Black, White, Blue	Gray, Blue, Green
Form Factor
Candybar	Candybar	Candybar
Dimension
162.3 x 77.2 x 8.9 mm (6.39 x 3.04 x 0.35 in)	8.9 mm thickness (0.35 in thickness)	163.9 x 75.9 x 8.9 mm (6.45 x 2.99 x 0.35 in)
Weight
199 g (7.02 oz)	191 g (6.74 oz)	221 g (7.8 oz)
SIM Type
Dual SIM (Nano-SIM, dual stand-by)	Single SIM (Nano-SIM), Dual SIM (Nano-SIM, dual stand-by)	Dual SIM (Nano-SIM, dual stand-by)
2G Network
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2	GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only)	GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G Network
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100	HSDPA 850 / 900 / 1900 / 2100	HSDPA 850 / 900 / 1900 / 2100
4G Network
LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 13(700), 17(700), 20(800), 25(1900), 2628, 32(1500), 38(2600), 39(1900), 40(2300), 41(2500)	LTE	LTE 1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 26, 28, 38, 40, 41, 66
Messaging

Build Features
- Fingerprint Sensor	- Fingerprint Sensor	- Fingerprint Sensor (side-mounted)

OS
Android 10.0	Android 10.0	Android 10
User Interface
MIUI 11	One UI 2.0	One UI 2.5
Processor
Octa-core (2x Cortex-A75 @ 2 GHz, 6x Cortex-A55 @ 2 GHz), MediaTek Helio G85 (12nm)	Octa-core 2.0 GHz, Exynos 850	Octa-core (4x2.0 GHz Cortex-A55 & 4x2.0 GHz Cortex-A55), Exynos 850 (8nm)
GPU
Mali-G52 MC2	-	Mali-G52
RAM
4 GB	3 GB	6 GB
Internal Memory
128 GB	64 GB	128 GB
External Memory
microSDXC (dedicated slot)	microSDXC	microSDXC (dedicated slot)

Type
FHD+ IPS LCD Capacitive Touchscreen	PLS TFT Capacitive Touchscreen	PLS IPS Display
Colors
16M colors	16M colors	16M Colour
Size
6.53 inches	6.55 inches	6.5 inches
Resolution
1080 x 2340 pixels (395 ppi)	720 x 1600 pixels (268 ppi)	720 x 1600 pixels (270 ppi)
Screen-to-Body Ratio
83.40%	-	81.95%
Multi-Touch

Rear Camera
48 MP + 8 MP + 2 MP + 2 MP	48 MP + 8 MP + 2 MP	48 MP + 5 MP + 2 MP + 2 MP
Flash
LED flash	LED Flash	LED flash
Features
48 MP, f/1.8, 26mm (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.2, 13mm (ultrawide), 1/4.0", 1.12µm 2 MP, f/2.4, (macro), AF 2 MP, f/2.4, (depth) HDR, Panorama	48 MP, f/2.0, 26mm (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.4, (ultrawide), 1/4.0", 1.12µm 2 MP, f/2.4, (macro) Panorama, HDR	48 MP, f/2.0, (wide), PDAF 5 MP, f/2.2, 123˚ (ultrawide), 1/5.0", 1.12µm 2 MP, f/2.4, (macro) 2 MP, f/2.4, (depth) panorama, HDR
Video
1080p@30fps	1080p@30fps	1080p@30fps
Front Camera
13 MP, f/2.3, 29mm (normal), 1/3.1", 1.12µm HDR, Panorama 1080p@30fps	13 MP, f/2.3, 29mm (normal), 1/3.1", 1.12µm HDR, Panorama 1080p@30fps	8 MP, f/2.2, (Wide) HDR 1080p@30fps

GPRS
Yes	Yes	Yes
Edge
Yes	Yes	Yes
3G
HSPA 42.2/5.76 Mbps, LTE-A	HSPA 42.2/5.76 Mbps, LTE-A	HSPA 42.2/5.76 Mbps, LTE-A
Bluetooth
5.0, A2DP, LE	5.0, A2DP, LE	5.0, A2DP
Wi-Fi
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot	Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot	Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot
USB
2.0, Type-C 1.0 reversible connector	Yes	USB Type-C 2.0
GPS
Yes, with A-GPS, GLONASS, GALILEO, BDS	Yes, with A-GPS	Yes, with A-GPS, GLONASS, GALILEO, BDS
Browser
Yes	Yes	Yes

Internal
128 GB, 4 GB RAM or 64 GB, 3 GB RAM	64 GB, 3 GB RAM or 32 GB, 3 GB RAM	128 GB, 6 GB RAM or 64 GB, 4 GB RAM or 32 GB, 3 GB RAM (eMMC 5.1)
Expandable Storage
microSDXC (dedicated slot)	microSDXC	microSDXC (dedicated slot)
USB OTG
Supported	Supported	Not Supported

Fingerprint

Proximity Sensor

Accelerometer Sensor

Magnetic-field Sensor (Compass)

Gyroscope Sensor

NFC

Type
Non-removable Li-Po Battery Fast battery charging 18W	Non-removable Li-Po Battery Battery Charging 10W	Non-removable Li-Po Battery Fast battery charging 15W
Capacity
5020mAh	5000 mAh	6000 mAh
Stand by
-	-	-
Talk Time
-	-	-