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Xiaomi Redmi 9i vs Samsung Galaxy M21 vs Samsung Galaxy M31

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Last Updated: 
5th Nov 2020

Key Feature Comparison

Xiaomi Redmi 9i
₹8,299
7/10
Samsung Galaxy M21
₹12,699
8/10
Samsung Galaxy M31
₹13,999
8/10
Xiaomi Redmi 9i
Xiaomi Redmi 9i
7/10
₹8,299
7/10
VS
Samsung Galaxy M21
Samsung Galaxy M21
8/10
₹12,699
8/10
VS
Samsung Galaxy M31
Samsung Galaxy M31
8/10
₹13,999
8/10
Display
Screen Size
6.53 inches
6.4 inches
6.4 inches
Screen Type
IPS LCD
Super AMOLED
Super AMOLED
Screen Resolution
720 x 1600 pixels
1080 x 2340 pixels
1080 x 2340 pixels
Pixel Density
269 ppi
403 ppi
403 ppi
Aspect Ratio
20:09
19.5:9
19.5:9
Screen to Body Ratio
81.01%
91%
83.92%
Screen Design
Waterdrop Notch
Waterdrop Notch
Notch
Screen Quality
HD
FHD
FHD
Peak Brightness
270 nits
420 nits
-
Screen Protection
-
Corning Gorilla Glass v3
Corning Gorilla Glass v3
Miscellaneous Features
Sensors
Light sensor, Proximity sensor, Accelerometer, Compass
Light sensor, Proximity sensor, Accelerometer, Gyroscope
Light sensor, Proximity sensor, Accelerometer, Compass, Gyroscope
General
Announced On
9-Sep-20
18-Mar-20
25-Feb-20
Market Status
Available
Available
Available
Brand
Xiaomi
Samsung
Samsung
Price Status
Confirmed
Confirmed
Confirmed
Price
Rs. 7,469
Rs. 13,499
Rs. 15,999
Performance
Operating System
Android v10 (Q)
Android v10 (Q)
Android v10 (Q)
GPU
PowerVR GE8320
Mali-G72 MP3
Mali-G72 MP3
Chipset
MediaTek Helio G25
Samsung Exynos 9 Octa 9611
Samsung Exynos 9 Octa 9611
CPU
Octa core, 2 GHz, Cortex A53
Octa core (2.3 GHz, Quad core, Cortex A73 + 1.7 GHz, Quad core, Cortex A53)
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
2.3 GHz
2.3 GHz
Architecture
64 bit
64 bit
64 bit
Process Technology
12 nm
10 nm
10 nm
Battery
Battery Capacity
5000 mAh
6000 mAh
6000 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
Memory & Storage
Phone Variants
64GB 4GB RAM, 128GB 4GB RAM
64GB 4GB RAM, 128GB 6GB RAM
64GB 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
Storage Type
-
UFS 2.1
UFS 2.1
Design
IP Certification
Yes, Splash proof
-
-
Weight
194 grams
188 grams
191 grams
Colors
Midnight Black, Sea Blue,Nature Green
Midnight Blue, Raven Black
Black, Blue
Build
Back Panel: Plastic
Back: Plastic
Back: Plastic
Dimensions
164.9 x 77.07 x 9 mm
159 x 75.1 x 8.9 mm
159.2 x 75.1 x 8.9 mm
SAR Value
Head: 0.528 W/kg, Body: 0.791 W/kg
Head: 0.468 W/kg
Head: 0.383 W/kg
Network & Connectivity
GPS
Yes A-GPS, Glonass
Yes A-GPS, Glonass
Yes A-GPS, Glonass
NFC
No
No
No
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
Front Camera
Front Video Recording
1080p30fps
1920x1080 @ 30 fps
1920x1080 @ 30 fps
Front Camera Features
HDR
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/2.0 Primary Camera
Front Camera 1 Lens
1.12 micrometre pixel size
26 mm focal length
26 mm focal length, 2.8" sensor size, 0.8 micrometre pixel size
Front Aperture
f/2.2
f/2.2
f/2.0
Front Flash
Yes, Screen flash
No
No
Front Sensor
-
CMOS
Exmor RS
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, Dual VoLTE
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) / 850(band 5) / 800(band 20), 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz, 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz, GPRS:...
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...
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) / 850(band 5) / 800(band 20), 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz, 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz, GPRS:...
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
3840x2160 @ 30 fps, 1920x1080 @ 30 fps
3840x2160 @ 30 fps, 1920x1080 @ 30 fps, 1280x720 @ 240 fps
Rear Camera Features
Digital Zoom, Auto Flash, Face detection, Touch to focus
4 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
Triple, 48MP + 8MP + 5MP
Quad, 64MP + 8MP + 5MP + 5MP
Rear Camera 1 Resolution
13 MP
48 MP
64 MP
Rear Camera 1 Type
f/2.2 Primary Camera
f/2.0 (upto 4x Digital Zoom) Primary Camera
f/1.8 (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, 1.7" sensor size, 0.8 micrometre pixel size
Rear Aperture
f/2.2
f/2.0
f/1.8
OIS
-
No
No
Rear Camera 2 Resolution
-
8 MP
8 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 2 Lens
-
12 mm focal length, 4.0" sensor size, 1.12 micrometre pixel size
12 mm focal length, 4.0" sensor size, 1.12 micrometre pixel size
Rear Camera 3 Resolution
-
5 MP
5 MP
Rear Camera 3 Type
-
f/2.2, Depth Camera
f/2.4, Macro Camera
Rear Sensor
-
CMOS image sensor
ISOCELL Plus
Sensors
Fingerprint Scanner
No
Yes
Yes
Fingerprint Scanner Position
-
Rear
Rear

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