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Samsung Galaxy M21 vs Samsung Galaxy M31 vs Xiaomi Redmi Note 9 Pro

Last Updated: Sat, 4 Jul'20

Show Differences onlyCommon Specs only

Samsung Galaxy M21

Samsung Galaxy M31

Xiaomi Redmi Note 9 Pro

Show Differences onlyCommon Specs only

Samsung Galaxy M21

Samsung Galaxy M31

Xiaomi Redmi Note 9 Pro

General

Height
6.26 inches
6.29 inches
6.53 inches
Width
2.96 inches
2.96 inches
3.02 inches
Thickness
0.35 inches
0.35 inches
0.35 inches
Weight
188 g
191 g
209 g
Color
Midnight Blue, Black
Ocean Blue, Space Black
Aurora Blue, Glacier White, Interstellar Black
Build
Glass front (Gorilla Glass 3), plastic back, plastic frame
Glass front (Gorilla Glass 3), plastic back, plastic frame
Glass front (Gorilla Glass 5), glass back (Gorilla Glass 5), plastic frame

Screen Size
6.4 inches
6.4 inches
6.67 inches
Display Type
Super AMOLED capacitive touchscreen
Super AMOLED capacitive touchscreen
IPS LCD capacitive touchscreen
Display Resolution
1080 x 2340 pixels
1080 x 2340 pixels
1080 x 2400 pixels
Pixel Density
403 ppi
411 ppi
395 ppi
Aspect Ratio
19.5:9
19.5:9
20:09
Protection
Corning Gorilla Glass 3
Corning Gorilla Glass 3
Corning Gorilla Glass 5
Screen to Body Ratio
84.20%
84.1%
84.50%

GPU
Mali-G72 MP3
Mali-G72 MP3
Adreno 618
OS
Android 10.0 One UI 2
Android 10, One UI 2.5
Android 10.0 MIUI 11
Chipset GP
Exynos 9611 (10nm)
Exynos 9611 (10nm)
Qualcomm SM7125 Snapdragon 720G (8 nm)
CPU
Octa-core (4x2.3 GHz Cortex-A73 and 4x1.7 GHz Cortex-A53)
Octa-core (4x2.3 GHz Cortex-A73 4x1.7 GHz Cortex-A53)
Octa-core (2x2.3 GHz Kryo 465 Gold and 6x1.8 GHz Kryo 465 Silver)

RAM/Internal Storage
64GB 4GB RAM, 128GB 6GB RAM
64GB 6GB RAM, 128GB 6GB RAM, 128GB 8GB RAM
64GB 4GB RAM, 128GB 6GB RAM, 128GB 4GB RAM
Expandable Memory
microSDXC (dedicated slot)
microSDXC (dedicated slot)
microSDXC (dedicated slot)

Triple Camera
48 MP, f/2.0, 26mm (wide), 1/2.0, 0.8 micron|8 MP, f/2.2, 12mm (ultrawide), 1/4.0, 1.12 micron|5 MP, f/2.2, (depth)
64 MP, f/1.8, 26mm (wide), 1/1.72, 0.8 micron|8 MP, f/2.2, 12mm (ultrawide), 1/4.0, 1.12 micron|5 MP, f/2.2, 25mm (macro), 1/5.0, 1.12 micron|5 MP, f/2.2, (depth)
Autofocus
PDAF
PDAF
PDAF
Back Camera Video
4K30fps, 1080p30fps, gyro-EIS
2160p30fps, 1080p30fps, gyro-EIS
4K30fps, 1080p30/60/120fps, 720p960fps, gyro-EIS
Back Camera Features
LED flash, panorama, HDR
LED flash, panorama, HDR
LED flash, HDR, panorama

Single Camera
20 MP, f/2.0, 26mm (wide)
32 MP, f/2.0, 26mm (wide), 1/2.8, 0.8 micron
16 MP, f/2.5, (wide), 1.0micron
Front Camera Video
1080p30fps
1080p30fps
1080p30fps
Front Camera Features
HDR
HDR
HDR, panorama

WLAN
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot
GPS
Yes, with A-GPS, GLONASS, BDS
Yes, with A-GPS, GLONASS, BDS
Yes, with A-GPS, GLONASS, GALILEO, BDS, NavIC
Radio
FM radio, RDS, recording
FM radio, RDS, recording
FM radio, recording
USB
2.0, Type-C 1.0 reversible connector
2.0, Type-C 1.0 reversible connector
2.0, Type-C 1.0 reversible connector
NFC
No
No
SIM
Dual SIM (Nano-SIM, dual stand-by)
Dual SIM (Nano-SIM, dual stand-by)
Dual SIM (Nano-SIM, dual stand-by)
Network Support
GSM / HSPA / LTE
GSM / HSPA / LTE
GSM / HSPA / LTE

Sensors
Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass
Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass
Fingerprint (side-mounted), accelerometer, gyro, proximity, compass

Announced On
2020, March 18
2020, February 25
2020, March 12
Status
Available. Released 2020, March 23
Available. Released 2020, March 04
Available. Released 2020, March 17