Phone Comparison - Samsung Galaxy A20 vs Xiaomi Redmi Note 9 vs Samsung Galaxy A21s

general 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

hardware Hardware and OS

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

display Display

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 yes yes yes

multimedia Multimedia

3.5mm Jack yes yes yes
Radio FM radio FM radio, recording -
Games Yes + Downloadable Yes + Downloadable Yes + Downloadable
Loud Speaker yes yes yes

camera Camera

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 [Similar] 13 MP, f/2.3, 29mm (normal), 1/3.1", 1.12µm
HDR, Panorama
1080p@30fps [Similar]
13 MP, f/2.3, 29mm (normal), 1/3.1", 1.12µm
HDR, Panorama
1080p@30fps [Similar]

connectivity Connectivity and Data Rate

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

memory User Memory

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

Apps Sensors

Fingerprint fingerprint supported fingerprint supported fingerprint supported
Proximity Sensor proximity sensor present proximity sensor present proximity sensor present
Accelerometer Sensor accelerometer sensor present accelerometer sensor present accelerometer sensor present
Magnetic-Field Sensor (Compass) magnetic field sensor present magnetic field sensor present magnetic field sensor not present
Gyroscope Sensor gyroscope sensor not present gyroscope sensor present gyroscope sensor not present
NFC NFC supported NFC supported NFC supported

battery Battery

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 - - -