Samsung Galaxy M31s vs Samsung Galaxy A21S vs Samsung Galaxy M31
Key Feature Comparison
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At a Glance
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Octa core (2.3 GHz, Quad core, Cortex A73 + 1.7 GHz, Quad core, Cortex A53)
Octa core (2 GHz, Quad core, Cortex A55 + 2 GHz, Quad core, Cortex A55)
Octa core (2.3 GHz, Quad core, Cortex A73 + 1.7 GHz, Quad core, Cortex A53)
6000 mAh
5000 mAh
6000 mAh
6.5 inches
6.5 inches
6.4 inches
Quad, 64MP + 12MP + 5MP + 5MP
Quad, 48MP + 8MP + 2MP + 2MP
Quad, 64MP + 8MP + 5MP + 5MP
4G
4G
4G
Detailed Specs
Screen Size
6.5 inches
6.5 inches
6.4 inches
Screen Type
Super AMOLED
TFT
Super AMOLED
Screen Resolution
1080 x 2400 pixels
720 x 1600 pixels
1080 x 2340 pixels
Pixel Density
405 ppi
270 ppi
403 ppi
Aspect Ratio
20:09
20:09
19.5:9
Screen Protection
Gorilla Glass 3
-
Gorilla Glass 3
Screen to Body Ratio
91%
82.75%
83.92%
Screen Design
Punch hole
Punch hole
Regular notch
Screen Refresh Rate
60 Hz
-
-
Screen Quality
FHD
-
FHD
Peak Brightness
420 nits
-
-
Phone Variants
8GB 128GB, 6GB 128GB
6GB 64GB, 4GB 64GB, 6GB 128GB
6GB 64GB, 8GB 128GB, 6GB 128GB
Expandable Storage
Yes
Yes
Yes
RAM Type
LPDDR4X
LPDDR4X
LPDDR4X
Storage Type
UFS 2.1
eMMC 5.1
UFS 2.1
Expandable Storage Capacity
Yes, 512 GB
Yes, 512 GB
Yes, 512 GB
OTG Support
-
Yes
Yes
Sensors
Light sensor, Proximity sensor, Accelerometer, Compass, Gyroscope
Light sensor, Proximity sensor, Accelerometer, Gyroscope
Light sensor, Proximity sensor, Accelerometer, Compass, Gyroscope
Operating System
Android v10 (Q)
Android v10 (Q)
Android v10 (Q)
GPU
Mali-G72 MP3
Mali-G52 MP1
Mali-G72 MP3
Chipset
Samsung Exynos 9 Octa 9611
Samsung Exynos 8 Octa 850
Samsung Exynos 9 Octa 9611
CPU
Octa core (2.3 GHz, Quad core, Cortex A73 + 1.7 GHz, Quad core, Cortex A53)
Octa core (2 GHz, Quad core, Cortex A55 + 2 GHz, Quad core, Cortex A55)
Octa core (2.3 GHz, Quad core, Cortex A73 + 1.7 GHz, Quad core, Cortex A53)
Custom User Interface
Samsung One UI
Samsung One UI
Samsung One UI
Clock Speed
2.3 GHz
2 GHz
2.3 GHz
Architecture
64 bit
64 bit
64 bit
Process Technology
10 nm
8 nm
10 nm
Battery Capacity
6000 mAh
5000 mAh
6000 mAh
Battery Removable
No
No
No
Battery Type
Li-ion
Li-ion
Li-ion
Charger Type
Fast, 25W
Fast, 15W
Fast, 15W
USB Type-C
Yes
Yes
Yes
Fast Charging
Yes
Yes
Yes
Announced On
30-Jul-20
15-May-20
25-Feb-20
Market Status
Available
Available
Available
Brand
Samsung
Samsung
Samsung
Model Number
SM-M317FZBDINS
SM-A217FZB1INS/SM-A217FZBGINS/SM-A217FZB5INS
SM-M315FZKDINS
Price Status
Confirmed
Confirmed
Confirmed
Price
Rs. 18,499
Rs. 13,999
Rs. 15,999
GPS
Yes A-GPS, Glonass
Yes A-GPS, Glonass
Yes A-GPS, Glonass
Audio Features
Dolby Atmos
-
Dolby Atmos
NFC
No
No
No
Network Support
4G
4G
4G
Bluetooth
Yes
Yes
Yes
3.5mm Audio Jack
Yes
Yes
Yes
SIM Size
SIM1: Nano, SIM2: Nano
SIM1: Nano, SIM2: Nano
SIM1: Nano, SIM2: Nano
Wi-Fi
Yes, Wi-Fi 802.11, ac/b/g/n/n 5GHz
Yes, Wi-Fi 802.11, ac/b/g/n/n 5GHz
Yes, Wi-Fi 802.11, ac/b/g/n/n 5GHz
Bluetooth Type
v5.0
v5.0
v5.0
Audio Jack
3.5 mm
3.5 mm
3.5 mm
SIM Slot(s)
Dual SIM, GSM+GSM
Dual SIM, GSM+GSM
Dual SIM, GSM+GSM, Dual VoLTE
eSIM
No
No
No
Wi-Fi Features
Wi-Fi Direct, Mobile Hotspot
Wi-Fi Direct, Mobile Hotspot
Wi-Fi Direct, Mobile Hotspot
VoLTE
Yes
Yes
Yes
SIM 1 Bands
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 17) / 800(band 20) / 850(band 26), 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) / 850(band 5) / 800(band 20), 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz, 2G Bands: GSM 1800...
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 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 17) / 800(band 20) / 850(band 26), 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) / 850(band 5) / 800(band 20), 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz, 2G Bands: GSM 1800...
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...
Front Video Recording
3840x2160 @ 30 fps
1920x1080 @ 30 fps
1920x1080 @ 30 fps
Front Camera Features
HDR
-
HDR
Front Camera Setup
Single, 32MP
Single, 13MP
Single, 32MP
Front Camera 1 Resolution
32 MP
13 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
26 mm focal length, 2.8" sensor size, 0.8 micrometre pixel size
3.1" sensor size, 1.12 micrometre pixel size
26 mm focal length, 2.8" sensor size, 0.8 micrometre pixel size
Front Sensor
Exmor RS
-
Exmor RS
Front Aperture
f/2.2
f/2.2
f/2.0
Front Flash
No
No
No
Weight
203 grams
192 grams
191 grams
Colors
Mirage Black, Mirage Blue
Black, Blue, White
Black, Blue
Build
Back: Plastic
Back: Plastic
Back: Plastic
Dimensions
159.3 x 74.4 x 9.3 mm
163.7 x 75.3 x 8.9 mm
159.2 x 75.1 x 8.9 mm
SAR Value
Head: 1.38 W/kg
Head: 0.831 W/kg
Head: 0.383 W/kg
OIS
No
No
No
Rear Flash
Yes, LED Flash
Yes, LED Flash
Yes, LED Flash
Rear Video Recording
3840x2160 @ 30 fps
1920x1080 @ 30 fps
3840x2160 @ 30 fps, 1920x1080 @ 30 fps, 1280x720 @ 240 fps
Rear Camera Features
10 x 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
Quad, 64MP + 12MP + 5MP + 5MP
Quad, 48MP + 8MP + 2MP + 2MP
Quad, 64MP + 8MP + 5MP + 5MP
Rear Camera 1 Resolution
64 MP
48 MP
64 MP
Rear Camera 1 Type
f/1.8 (upto 10x Digital Zoom), Wide Angle Primary Camera
f/2.0 (upto 8x Digital Zoom), Wide Angle Primary Camera
f/1.8 (upto 8x Digital Zoom) Primary Camera
Rear Camera 1 Lens
26 mm focal length, 1.7" sensor size, 0.8 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 Camera 2 Resolution
12 MP
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
f/2.2, Wide Angle, Ultra-Wide Angle Camera
Rear Camera 3 Resolution
5 MP
2 MP
5 MP
Rear Camera 3 Type
f/2.4, Macro Camera
f/2.4, Macro Camera
f/2.4, Macro Camera
Rear Camera 4 Resolution
5 MP
2 MP
5 MP
Rear Camera 4 Type
f/2.4, Depth Camera
f/2.4, Depth Camera
f/2.2, Depth Camera
Rear Sensor
Exmor-RS CMOS Sensor
-
ISOCELL Plus
Rear Aperture
f/1.8
f/2.0
f/1.8
Rear Camera 2 Lens
-
4.0" sensor size, 1.12 micrometre pixel size
12 mm focal length, 4.0" sensor size, 1.12 micrometre pixel size
Fingerprint Scanner
Yes
Yes
Yes
Fingerprint Scanner Position
Side
Rear
Rear
Face Unlock
Yes
Yes
Yes