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

general General Info

Manufacturer Xiaomi Samsung Xiaomi
Announced 2020, April 30 Expected Announcement - May 2020 Not announced yet
Status Coming soon. Exp. release 2020, May Rumored Rumored
Colors Forest Green, Midnight Grey, Polar White Black, White, Blue Blue, other colors
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 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 / 1700(AWS) / 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
Messaging
Build Features - Fingerprint Sensor
- Fingerprint Sensor
- Fingerprint Sensor

hardware Hardware and OS

OS Android 10.0 Android 10.0 Android 10.0
User Interface MIUI 11 One UI 2.0 MIUI 12
Processor Octa-core (2x Cortex-A75 @ 2 GHz, 6x Cortex-A55 @ 2 GHz), MediaTek Helio G85 (12nm) Octa-core 2.0 GHz, Exynos 850 , MediaTek Helio G25
GPU Mali-G52 MC2 - Mali-G31
RAM 4 GB 3 GB 3 GB
Internal Memory 128 GB 64 GB 32 GB
External Memory microSDXC (dedicated slot) microSDXC microSDXC (dedicated slot)

display Display

Type FHD+ IPS LCD Capacitive Touchscreen PLS TFT Capacitive Touchscreen IPS LCD Capacitive Touchscreen
Colors 16M colors 16M colors 16M colors
Size 6.53 inches 6.55 inches 6.53 inches
Resolution 1080 x 2340 pixels (395 ppi) 720 x 1600 pixels (268 ppi) 720 x 1600 pixels (269 ppi)
Screen-to-Body Ratio 83.40% - -
Multi-Touch yes yes yes

multimedia Multimedia

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

camera Camera

Rear Camera 48 MP + 8 MP + 2 MP + 2 MP 48 MP + 8 MP + 2 MP 13 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
13 MP, f/1.8, (wide), 1/3.1", 1.12µm, PDAF
HDR, Panorama
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 [Similar]
13 MP, f/2.3, 29mm (normal), 1/3.1", 1.12µm
HDR, Panorama
1080p@30fps [Similar]
5 MP
HDR
1080p@30fps [Similar]

connectivity Connectivity and Data Rate

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, LE
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, hotspot
USB 2.0, Type-C 1.0 reversible connector Yes 2.0, Type-C 1.0 reversible connector, USB On-The-Go
GPS Yes, with A-GPS, GLONASS, GALILEO, BDS Yes, with A-GPS Yes, with A-GPS
Browser Yes Yes Yes

memory User Memory

Internal 128 GB, 4 GB RAM or 64 GB, 3 GB RAM 64 GB, 3 GB RAM or 32 GB, 3 GB RAM 32 GB, 3 GB RAM
Expandable Storage microSDXC (dedicated slot) microSDXC microSDXC (dedicated slot)
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 not present magnetic field sensor not present
Gyroscope Sensor gyroscope sensor present gyroscope sensor not present gyroscope sensor present
NFC NFC supported NFC supported NFC not supported

battery Battery

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