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Samsung Galaxy A31 vs Samsung Galaxy A51 vs Xiaomi Redmi Note 9 Pro

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Last Updated: 
17th Oct 2020

Key Feature Comparison

Samsung Galaxy A31
₹17,999
8/10
Samsung Galaxy A51
₹22,499
8/10
Xiaomi Redmi Note 9 Pro
₹12,999
8/10
Samsung Galaxy A31
Samsung Galaxy A31
8/10
₹17,999
8/10
VS
Samsung Galaxy A51
Samsung Galaxy A51
8/10
₹22,499
8/10
VS
Xiaomi Redmi Note 9 Pro
Xiaomi Redmi Note 9 Pro
8/10
₹12,999
8/10
Display
Screen Size
6.4 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 2400 pixels
1080 x 2400 pixels
1080 x 2400 pixels
Pixel Density
411 ppi
405 ppi
395 ppi
Aspect Ratio
20:09
20:9
20:09
Screen to Body Ratio
84.90%
87.4%
84.50%
Protection
-
Corning Gorilla Glass 3
Corning Gorilla Glass 5
Battery
Battery Capacity
5000 mAh battery
4000 mAh battery
5020 mAh battery
User Replaceable
Non-removable
Non-removable
Non-removable
Charging
Fast charging 15W
Fast charging 15W
Fast charging 18W
Battery Type
Li-Po
Li-Po
Li-Po
Talk Time
-
Up to 32 (Hours 4G LTE)
-
Music Time
-
Up to 87 (Hours)
-
Communications
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, RDS, recording
FM radio
FM radio, recording
USB
2.0, Type-C 1.0 reversible connector, USB On-The-Go
2.0, Type-C 1.0 reversible connector, USB On-The-Go
2.0, Type-C 1.0 reversible connector
NFC
Yes
Yes
No
SIM
Single SIM (Nano-SIM) or Dual SIM (Nano-SIM, dual stand-by)
Single SIM (Nano-SIM) or 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
Miscellaneous Features
Sensors
Fingerprint (under display, optical), accelerometer, gyro, proximity, compass
Fingerprint (under display, Accelerometer, Fingerprint Sensor, Gyro Sensor, Geomagnetic Sensor, Hall Sensor, Light Sensor, Virtual Proximity Sensing
Fingerprint (side-mounted), accelerometer, gyro, proximity, compass
Sound
HeadPhone Jack
Yes
Yes
Yes
Loudspeaker
Yes
Yes
Yes
Audio Features
Dolby Atmos
Dolby Atmos
-
Memory & Storage
RAM/Internal Storage
128GB 6GB RAM
128GB 6GB RAM, 128GB 8GB RAM
64GB 4GB RAM, 128GB 6GB RAM, 128GB 4GB RAM
Expandable Memory
microSDXC (dedicated slot), Up to 512GB Expandable
microSDXC (dedicated slot)
microSDXC (dedicated slot)
Launch
Announced On
2020, March 24
2019, December
2020, March 12
Status
Available. Released 2020, June 04
Available. Released 2020, January 29
Available. Released 2020, March 17
Performance
OS
Android 10, One UI 2.0
Android 10, One UI 2.1
Android 10.0 MIUI 11
CPU
Octa-core (2x2.0 GHz, 6x1.7 GHz)
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)
GPU
-
Mali-G72 MP3
Adreno 618
Chipset GP
-
Exynos 9611 (10nm)
Qualcomm SM7125 Snapdragon 720G (8 nm)
Front Camera
Single Camera
20 MP, f/2.2, (wide)
32 MP, f/2.2, 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, panorama
Design
Height
6.27 inches
6.24 inches
6.53 inches
Width
2.88 inches
2.90 inches
3.02 inches
Thickness
0.34 inches
0.31 inches
0.35 inches
Weight
185 g
172 g
209 g
Color
Prism Crush Black, Prism Crush Blue, Prism Crush White
Prism Crush Black, Prism Crush White, Prism Crush 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
Back Camera
Quad Camera
48 MP, f/2.0, 26mm (wide), 1/2.0, 0.8 micron8 MP, f/2.2, 13mm (ultrawide), 1/4.0, 1.12 micron5 MP, f/2.4, (macro)5 MP, f/2.4, (depth)
48 MP, f/2.0, 26mm (wide), 1/2.0, 0.8 micron12 MP, f/2.2, 12mm (ultrawide)5 MP, f/2.4, 25mm (macro), 1/5.0, 1.12 micron5 MP, f/2.2, (depth)
48 MP, f/1.8, (wide), 1/2.25", 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
1080p30fps
4K30fps, 1080p30/120fps; gyro-EIS
4K30fps, 1080p30/60/120fps, 720p960fps, gyro-EIS
Back Camera Features
LED flash, panorama, HDR
LED flash, panorama, HDR
LED flash, HDR, panorama
General
Bluetooth
5.0, A2DP, LE
5.0, A2DP, LE
5.0, A2DP, LE

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