Samsung Galaxy A20 vs Xiaomi Redmi Note 9 vs Samsung Galaxy A21s

General Info

Manufacturer
Samsung	Xiaomi	Samsung
Announced
March 2019	2020, April 30	Expected Announcement - May 2020
Status
Coming Soon - April 2019	Coming soon. Exp. release 2020, May	Rumored
Colors
Blue, Black	Forest Green, Midnight Grey, Polar White	Black, White, Blue
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)
Weight
-	199 g (7.02 oz)	191 g (6.74 oz)
SIM Type
Single SIM (Nano-SIM), Dual SIM (Nano-SIM, dual stand-by)	Dual SIM (Nano-SIM, dual stand-by)	Single SIM (Nano-SIM), Dual SIM (Nano-SIM, dual stand-by)
2G Network
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM only)	GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2	GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only)
3G Network
HSDPA 850 / 900 / 1900 / 2100	HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100	HSDPA 850 / 900 / 1900 / 2100
4G Network
LTE	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
Messaging

Build Features
- Fingerprint Sensor	- Fingerprint Sensor	- Fingerprint Sensor

OS
Android 9.0 (Pie)	Android 10.0	Android 10.0
User Interface
-	MIUI 11	One UI 2.0
Processor
Octa-core (2x1.6 GHz & 6x1.35 GHz), Exynos 7884 Octa	Octa-core (2x Cortex-A75 @ 2 GHz, 6x Cortex-A55 @ 2 GHz), MediaTek Helio G85 (12nm)	Octa-core 2.0 GHz, Exynos 850
GPU
-	Mali-G52 MC2	-
RAM
3 GB	4 GB	3 GB
Internal Memory
32 GB	128 GB	64 GB
External Memory
microSD, up to 512 GB (dedicated slot)	microSDXC (dedicated slot)	microSDXC

Type
Super AMOLED Capacitive Touchscreen	FHD+ IPS LCD Capacitive Touchscreen	PLS TFT Capacitive Touchscreen
Colors
16M colors	16M colors	16M colors
Size
6.4 inches	6.53 inches	6.55 inches
Resolution
720 x 1560 pixels (268 ppi)	1080 x 2340 pixels (395 ppi)	720 x 1600 pixels (268 ppi)
Screen-to-Body Ratio
-	83.40%	-
Multi-Touch

Rear Camera
13 MP + 5 MP	48 MP + 8 MP + 2 MP + 2 MP	48 MP + 8 MP + 2 MP
Flash
LED Flash	LED flash	LED Flash
Features
13 MP, f/1.9, 28mm (wide), AF 5 MP, f/2.2, depth sensor Panorama, HDR	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
Video
1080p@30fps	1080p@30fps	1080p@30fps
Front Camera
8 MP, f/2.0	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

GPRS
Yes	Yes	Yes
Edge
Yes	Yes	Yes
3G
HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps	HSPA 42.2/5.76 Mbps, LTE-A	HSPA 42.2/5.76 Mbps, LTE-A
Bluetooth
4.2, A2DP, LE	5.0, A2DP, LE	5.0, A2DP, LE
Wi-Fi
Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot	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
USB
microUSB 2.0	2.0, Type-C 1.0 reversible connector	Yes
GPS
Yes, with A-GPS, GLONASS, BDS	Yes, with A-GPS, GLONASS, GALILEO, BDS	Yes, with A-GPS
Browser
Yes	Yes	Yes

Internal
32 GB, 3 GB RAM	128 GB, 4 GB RAM or 64 GB, 3 GB RAM	64 GB, 3 GB RAM or 32 GB, 3 GB RAM
Expandable Storage
microSD, up to 512 GB (dedicated slot)	microSDXC (dedicated slot)	microSDXC
USB OTG
Supported	Supported	Supported

Fingerprint

Proximity Sensor

Accelerometer Sensor

Magnetic-field Sensor (Compass)

Gyroscope Sensor

NFC

Type
Non-removable Li-Po Battery	Non-removable Li-Po Battery Fast battery charging 18W	Non-removable Li-Po Battery Battery Charging 10W
Capacity
4000 mAh	5020mAh	5000 mAh
Stand by
-	-	-
Talk Time
-	-	-