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Samsung Galaxy M51 vs Samsung Galaxy M31s vs Xiaomi Redmi Note 9 Pro Max

Last Updated: Fri, 11 Sep'20

Show Differences onlyCommon Specs only

Samsung Galaxy M51

Samsung Galaxy M31s

Xiaomi Redmi Note 9 Pro Max

Show Differences onlyCommon Specs only

Samsung Galaxy M51

Samsung Galaxy M31s

Xiaomi Redmi Note 9 Pro Max

General

Height
6.40 inches
6.27 inches
6.52 inches
Width
3.05 inches
2.92 inches
3.02 inches
Thickness
0.33 inches
0.36 inches
0.35 inches
Weight
213 g
203 g
209 g
Color
Celestial Black, Electric Blue
Mirage Black, Mirage Blue
Aurora Blue, Glacier White, Interstellar Black
Build
Glass front (Gorilla Glass 3), plastic back, plastic frame
Glass front (Gorilla Glass 5), glass back (Gorilla Glass 5), plastic frame

Screen Size
6.7 inches
6.5 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 2400 pixels
1080 x 2400 pixels
Pixel Density
385 ppi
405 ppi
395 ppi
Aspect Ratio
19.5:9
20:09
20:09
Protection
Corning Gorilla Glass 3
Corning Gorilla Glass 3
Corning Gorilla Glass 5
Screen to Body Ratio
87.40%
91 %
84.60%

OS
Android 10, One UI 2.1
Android 10, One UI 2.5
Android 10.0 MIUI 11
GPU
Adreno 618
Mali-G72 MP3
Adreno 618
Chipset GP
Qualcomm SDM730 Snapdragon 730G (8 nm)
Samsung Exynos 9 Octa 9611
Qualcomm SM7125 Snapdragon 720G (8 nm)
CPU
Octa-core (2x2.2 GHz Kryo 470 Gold, 6x1.8 GHz Kryo 470 Silver)
Octa core (2.3 GHz, Quad core, Cortex A73 + 1.7 GHz, Quad core, Cortex A53)
Octa-core (2x2.3 GHz Kryo 465 Gold and 6x1.8 GHz Kryo 465 Silver)

RAM/Internal Storage
128GB 6GB RAM, 128GB 8GB RAM
128GB 6GB RAM, 128GB 8GB RAM
64GB 6GB RAM, 128GB 6GB RAM, 128GB 8GB RAM
Expandable Memory
microSDXC, up to 512GB
microSDXC (dedicated slot), Up to 512 GB
microSDXC (dedicated slot)

Quad Camera
64 MP, f/1.8, 26mm (wide), 1/1.72, 0.8 micron|12 MP, f/2.2, 123degree (ultrawide)|5 MP, f/2.4, (macro)|5 MP, f/2.4, (depth)
64 MP, f/1.8, 26mm (wide), 1/1.72, 0.8 micron|12 MP, f/2.2, 123degree (ultrawide)|5 MP, f/2.4, (macro)|5 MP, f/2.4, (depth)
64 MP, f/1.9, (wide), 1/1.72", 0.8micron, PDAF | 8 MP, f/2.2, 13mm (ultrawide), 1/4.0", 1.12micron | 5 MP, f/2.4, (macro), 1.12micron | 2 MP, f/2.4, (depth)
Autofocus
PDAF
PDAF
PDAF
Back Camera Video
4K30fps, 1080p30fps
4K30fps, 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
OIS
No

Single Camera
32 MP, f/2.0, 26mm (wide), 1/2.8, 0.8 micron
32 MP, f/2.0, 26mm (wide), 1/2.8, 0.8 micron
32 MP, (wide), 1/2.8, 0.8 micron
Front Camera Video
1080p30fps
4K30fps, 1080p30fps
1080p30fps
Front Camera Features
HDR
HDR
HDR, panorama

Battery Capacity
7000 mAh battery
6000 mAh battery
5020 mAh battery
User Replaceable
non-removable
Non-removable
Non-removable
Talk Time
Upto 64 Hours
Up to 51 Hours (4G LTE)
Music Time
Upto 182 Hours
Up to 125 Hours Audio Playback Time
Charging
Fast charging 25W|Reverse Charging|100% in 115 mins
Fast charging 25W|Reverse charging
Fast charging 33W, 50% in 30 min
Battery Type
Li-Po
Li-Po
Li-Po

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, GALILEO, BDS
Yes, with A-GPS, GLONASS, GALILEO, BDS
Yes, with A-GPS, GLONASS, GALILEO, BDS, NavIC
Radio
FM radio
FM radio, RDS, recording
FM radio, recording
USB
2.0, Type-C 1.0 reversible connector
2.0, Type-C 1.0 reversible connector, USB On-The-Go
2.0, Type-C 1.0 reversible connector
NFC
Yes
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 (side-mounted), accelerometer, gyro, proximity, compass
Fingerprint (side-mounted), Accelerometer, Gyro Sensor, Geomagnetic Sensor, Light Sensor, Virtual Proximity Sensing
Fingerprint (side-mounted), accelerometer, gyro, proximity, compass

Announced On
2020, August 31
2020, July 30
2020, March 12
Status
Available. Released 2020, September 17
Available. Released 2020, July 30
Available. Released 2020, May 12