Phone Comparison - Samsung Galaxy M21 vs Samsung Galaxy A21s vs Xiaomi Redmi Note 9 Pro 5G

general General Info

Manufacturer Samsung Samsung Xiaomi
Announced 2020, March 18 Expected Announcement - May 2020 2020, November 26
Status Coming soon. Exp. release 2020, March 23 Rumored Coming soon. Exp. release 2020, December
Price Rs. 12,999 ($0.00) [Similarly Priced] - -
Colors Midnight Blue, Raven Black Black, White, Blue Gray, Blue, Red/Mint
Form Factor Candybar Candybar Candybar
Dimension 159 x 75.1 x 8.9 mm
(6.26 x 2.96 x 0.35 in)
8.9 mm thickness
(0.35 in thickness)
165.4 x 76.8 x 9 mm
(6.51 x 3.02 x 0.35 in)
Weight 188 g (6.63 oz) 191 g (6.74 oz) 215 g (7.58 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 / 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G Network LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800), 38(2600), 40(2300), 41(2500) LTE 1, 3, 5, 7, 8, 34, 38, 39, 40, 41
5G Network - - 1, 3, 41, 78, 79 SA/NSA/Sub6
Messaging
Build Features - Fingerprint Sensor
- Fingerprint Sensor
- Fingerprint Sensor (side-mounted)

hardware Hardware and OS

OS Android 10.0 Android 10.0 Android 10
User Interface One UI 2.0 One UI 2.0 MIUI 12
Processor Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53), Exynos 9611 (10nm) Octa-core 2.0 GHz, Exynos 850 Octa-core (2x2.2 GHz Kryo 570 & 6x1.8 GHz Kryo 570), Qualcomm SM7225 Snapdragon 750G 5G (8 nm)
GPU Mali-G72 MP3 - Adreno 619
RAM 6 GB 3 GB 8 GB
Internal Memory 128 GB 64 GB 256 GB
External Memory microSDXC (dedicated slot) microSDXC microSDXC (uses shared SIM slot)

display Display

Type Super AMOLED Capacitive Touchscreen
Corning Gorilla Glass 3
420 nits max brightness (advertised)
PLS TFT Capacitive Touchscreen IPS LCD Screen
Corning Gorilla Glass 5
120Hz Refesh Rate
HDR10
450 nits (typ)
Colors 16M colors 16M colors 16M Colour
Size 6.4 inches 6.55 inches 6.67 inches
Resolution 1080 x 2340 pixels (403 ppi) 720 x 1600 pixels (268 ppi) 1080 x 2400 pixels (395 ppi)
Screen-to-Body Ratio 84.07% - 84.37%
Multi-Touch yes yes yes

multimedia Multimedia

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

camera Camera

Rear Camera 48 MP + 8 MP + 5 MP 48 MP + 8 MP + 2 MP 108 MP + 8 MP + 2 MP + 2 MP
Flash LED Flash LED Flash Dual-LED dual-tone flash
Features 48 MP, f/2.0, 26mm (wide), 1/2.0", 0.8µm, PDAF
8 MP, f/2.2, 12mm (ultrawide), 1/4.0", 1.12µm
5 MP, f/2.2, (depth)
Panorama, HDR
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
108 MP, f/1.75, 26mm (wide), 1/1.52", 0.8µm, PDAF
8 MP, f/2.2, 118˚ (ultrawide), 1/4.0", 1.12µm
2 MP, f/2.4, (macro)
2 MP, f/2.4, (depth)
HDR, panorama
Video 2160p@30fps, 1080p@30fps, gyro-EIS 1080p@30fps 4K@30fps, 1080p@30fps
Front Camera 20 MP, f/2.0, (wide), 1/2.8", 1.0μm
HDR
1080p@30fps [Similar]
13 MP, f/2.3, 29mm (normal), 1/3.1", 1.12µm
HDR, Panorama
1080p@30fps [Similar]
16 MP, f/2.0
HDR, panorama
1080p@30fps [Similar]

connectivity Connectivity and Data Rate

GPRS Yes Yes Yes
Edge Yes Yes Yes
3G HSPA, LTE-A HSPA 42.2/5.76 Mbps, LTE-A HSPA 42.2/5.76 Mbps, LTE-A, 5G
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 a/b/g/n/ac, dual-band, 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, BDS Yes, with A-GPS Yes, with A-GPS, GLONASS, GALILEO, BDS
Browser Yes Yes Yes

memory User Memory

Internal 128 GB, 6 GB RAM or 64 GB, 4 GB RAM (UFS 2.1) 64 GB, 3 GB RAM or 32 GB, 3 GB RAM 256 GB, 8 GB RAM or 128 GB, 8 GB RAM or 128 GB, 6 GB RAM UFS 2.2
Expandable Storage microSDXC (dedicated slot) microSDXC microSDXC (uses shared SIM 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 present
Gyroscope Sensor gyroscope sensor present gyroscope sensor not present gyroscope sensor present
NFC NFC not supported NFC supported NFC not supported

battery Battery

Type Non-removable Li-Po Battery
Fast battery charging 15W
Non-removable Li-Po Battery
Battery Charging 10W
Non-removable Li-Po Battery
Fast battery charging 33W
Capacity 6000 mAh 5000 mAh 4820 mAh
Stand by - - -
Talk Time - - -