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Xiaomi Redmi 9i vs Samsung Galaxy A31 vs Samsung Galaxy A51

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Last Updated: 
17th Oct 2020

Key Feature Comparison

Xiaomi Redmi 9i
₹8,299
7/10
Samsung Galaxy A31
₹16,999
8/10
Samsung Galaxy A51
₹22,999
8/10
Xiaomi Redmi 9i
Xiaomi Redmi 9i
7/10
₹8,299
7/10
VS
Samsung Galaxy A31
Samsung Galaxy A31
8/10
₹16,999
8/10
VS
Samsung Galaxy A51
Samsung Galaxy A51
8/10
₹22,999
8/10
Display
Screen Size
6.53 inches
6.4 inches
6.5 inches
Screen Type
IPS LCD
Super AMOLED
Super AMOLED
Screen Resolution
720 x 1600 pixels
1080 x 2400 pixels
1080 x 2400 pixels
Pixel Density
269 ppi
411 ppi
405 ppi
Aspect Ratio
20:09
20:09
20:09
Screen to Body Ratio
81.01%
84.92%
87.44%
Screen Design
Waterdrop Notch
Waterdrop Notch
Punch-Hole Display
Screen Quality
HD
FHD
FHD
Peak Brightness
270 nits
-
-
Memory & Storage
Phone Variants
64GB 4GB RAM, 128GB 4GB RAM
128GB 6GB RAM
128GB 6GB RAM, 128GB 8GB RAM
Expandable Storage
Yes
Yes
Yes
Expandable Storage Capacity
Yes, 512 GB
Yes, 512 GB
Yes, 512 GB
OTG Support
Yes
Yes
Yes
RAM Type
-
LPDDR4X
LPDDR4X
Miscellaneous Features
Sensors
Light sensor, Proximity sensor, Accelerometer, Compass
Light sensor, Proximity sensor, Accelerometer, Gyroscope
Light sensor, Proximity sensor, Accelerometer, Gyroscope
General
Announced On
9-Sep-20
24-Mar-20
5-Dec-19
Market Status
Available
Available
Available
Brand
Xiaomi
Samsung
Samsung
Price Status
Confirmed
Confirmed
Confirmed
Price
Rs. 7,469
Rs. 17,999
Rs. 20,450
Performance
GPU
PowerVR GE8320
Mali-G52
Mali-G72 MP3
Operating System
Android v10 (Q)
Android v10 (Q)
Android v10 (Q)
Chipset
MediaTek Helio G25
MediaTek Helio P65
Samsung Exynos 9 Octa 9611
CPU
Octa core, 2 GHz, Cortex A53
Octa core (2 GHz, Dual core, Cortex A75 + 1.7 GHz, Hexa Core, Cortex A55)
Octa core (2.3 GHz, Quad core, Cortex A73 + 1.7 GHz, Quad core, Cortex A53)
Custom User Interface
MIUI
Samsung One UI
Samsung One UI
Clock Speed
2 GHz
2 GHz
2.3 GHz
Architecture
64 bit
64 bit
64 bit
Battery
Battery Capacity
5000 mAh
5000 mAh
4000 mAh
Battery Removable
No
No
No
Battery Type
Li-Polymer
Li-ion
Li-ion
USB Type-C
No
Yes
Yes
Charger Type
-
Fast, 15W
Fast, 15W
Fast Charging
-
Yes
Yes
Network & Connectivity
GPS
Yes A-GPS, Glonass
Yes A-GPS, Glonass
Yes A-GPS, Glonass
NFC
No
Yes
Yes
Bluetooth
Yes
Yes
Yes
3.5mm Audio Jack
Yes
Yes
Yes
Bluetooth Type
v5.0
v5.0
v5.0
Audio Jack
3.5 mm
3.5 mm
3.5 mm
Audio Features
-
Dolby Atmos
Dolby Atmos
FM Radio
-
Yes
-
Design
IP Certification
Yes, Splash proof
-
-
Weight
194 grams
185 grams
172 grams
Colors
Midnight Black, Sea Blue,Nature Green
Prism Crush Black, Prism Crush Blue, Prism Crush Red, Prism Crush White
Prism Crush White, Prism Crush Black, Prism Crush Pink, Prism Crush Blue
Build
Back Panel: Plastic
-
Back: Plastic
Dimensions
164.9 x 77.07 x 9 mm
159.3 x 73.1 x 8.6 mm
158.5 x 73.6 x 7.9 mm
SAR Value
Head: 0.528 W/kg, Body: 0.791 W/kg
Head: 1.13 W/kg
Head: 0.598 W/kg
Front Camera
Front Video Recording
1080p30fps
1920x1080 @ 30 fps
1920x1080 @ 30 fps
Front Camera Features
HDR
-
HDR
Front Camera Setup
Single, 5MP
Single, 20MP
Single, 32MP
Front Camera 1 Resolution
5 MP
20 MP
32 MP
Front Camera 1 Type
f/2.2 Primary Camera
f/2.2 Primary Camera
f/2.2 Primary Camera
Front Camera 1 Lens
1.12 micrometre pixel size
-
2.8" sensor size, 0.8 micrometre pixel size
Front Flash
Yes, Screen flash
No
No
Network
Network Support
4G (supports Indian bands), 3G, 2G
4G (supports Indian bands), 3G, 2G
4G (supports Indian bands), 3G, 2G
SIM Size
SIM1: Nano, SIM2: Nano
SIM1: Nano, SIM2: Nano
SIM1: Nano, SIM2: Nano
Wi-Fi
Yes, Wi-Fi 802.11, a/b/g/n
Yes, Wi-Fi 802.11, ac/b/g/n/n 5GHz
Yes, Wi-Fi 802.11, ac/b/g/n/n 5GHz
SIM Slot(s)
Dual SIM, GSM+GSM
Dual SIM, GSM+GSM
Dual SIM, GSM+GSM
eSIM
No
No
No
Wi-Fi Features
Mobile Hotspot
Wi-Fi Direct, Mobile Hotspot
Wi-Fi Direct, Mobile Hotspot
VoLTE
Yes
Yes
Yes
SIM 1 Bands
4G Bands: TD-LTE 2300(band 40) / 2500(band 41), FD-LTE 2100(band 1) / 1800(band 3) / 900(band 8) / 850(band 5), 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz, 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz, GPRS: Available, EDGE: Available...
4G Bands: TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41), FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 700(band 28) / 1900(band 2) / 1700(band 4) / 850(band 5) / 700(band 13) / 700(band 17) / 800(band 20), 3G Bands: UMTS 19...
4G Bands: TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41), FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 700(band 28) / 1900(band 2) / 1700(band 4) / 850(band 5) / 700(band 13) / 700(band 17) / 800(band 20) / 850(band 26), 3G Bands: UMTS 1...
SIM 2 Bands
4G Bands: TD-LTE 2300(band 40) / 2500(band 41), FD-LTE 2100(band 1) / 1800(band 3) / 900(band 8) / 850(band 5), 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz, 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz, GPRS: Available, EDGE: Available...
4G Bands: TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41), FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 700(band 28) / 1900(band 2) / 1700(band 4) / 850(band 5) / 700(band 13) / 700(band 17) / 800(band 20), 3G Bands: UMTS 19...
4G Bands: TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41), FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 700(band 28) / 1900(band 2) / 1700(band 4) / 850(band 5) / 700(band 13) / 700(band 17) / 800(band 20) / 850(band 26), 3G...
Rear Camera
Rear Flash
Yes, LED Flash
Yes, LED Flash
Yes, LED Flash
Rear Video Recording
1920x1080 @ 30 fps, 1280x720 @ 30 fps
1920x1080 @ 30 fps
3840x2160 @ 30 fps
Rear Camera Features
Digital Zoom, Auto Flash, Face detection, Touch to focus
8 x Digital Zoom, Auto Flash, Face detection, Touch to focus
8 x Digital Zoom, Auto Flash, Face detection, Touch to focus
Rear Camera Setup
Single, 13MP
Quad, 48MP + 8MP + 5MP + 5MP
Quad, 48MP + 12MP + 5MP + 5MP
Rear Camera 1 Resolution
13 MP
48 MP
48 MP
Rear Camera 1 Type
f/2.2 Primary Camera
f/2.0 (upto 8x Digital Zoom) Primary Camera
f/2.0 (upto 8x Digital Zoom) Primary Camera
Rear Camera 1 Lens
1 micrometre pixel size
26 mm focal length, 2" sensor size, 0.8 micrometre pixel size
26 mm focal length, 2.25" sensor size, 0.8 micrometre pixel size
OIS
-
No
No
Rear Camera 2 Resolution
-
8 MP
12 MP
Rear Camera 2 Type
-
f/2.2, Wide Angle, Ultra-Wide Angle Camera
f/2.2, Wide Angle, Ultra-Wide Angle Camera
Rear Camera 3 Resolution
-
5 MP
5 MP
Rear Camera 3 Type
-
f/2.4, Macro Camera
f/2.4, Macro Camera
Rear Camera 4 Resolution
-
5 MP
5 MP
Rear Camera 4 Type
-
f/2.4, Depth Camera
f/2.2, Depth Camera
Sensors
Fingerprint Scanner
No
Yes
Yes
Fingerprint Scanner Position
-
On-screen
On-screen
Fingerprint Scanner Type
-
Optical
Optical

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