Samsung Galaxy A31 vs Samsung Galaxy M21 vs Samsung Galaxy A71
- Updated: 8th Jul 2020, 14:18 IST
Key Feature Comparison
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At a Glance
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Octa core (2 GHz, Dual core, Cortex A75 + 1.7 GHz, Hexa Core, Cortex A55)
MediaTek Helio P65, Mali-G52
Octa core (2.3 GHz, Quad core, Cortex A73 + 1.7 GHz, Quad core, Cortex A53)
Samsung Exynos 9 Octa 9611, Mali-G72 MP3
Octa core (2.2 GHz, Dual core, Kryo 470 + 1.8 GHz, Hexa Core, Kryo 470)
Qualcomm Snapdragon 730, Adreno 618
5000 mAh
Li-ion, Fast, 15W
6000 mAh
Li-ion, Fast, 15W
4500 mAh
Li-ion, Fast, 25W
6.4 inches
411 ppi, FHD
6.4 inches
403 ppi, FHD
6.7 inches
393 ppi, FHD
Quad, 48MP + 8MP + 5MP + 5MP
1920x1080 @ 30 fps
Triple, 48MP + 8MP + 5MP
3840x2160 @ 30 fps, 1920x1080 @ 30 fps
Quad, 64MP + 12MP + 5MP + 5MP
3840x2160 @ 30 fps
4G
Dual SIM, GSM+GSM
4G
Dual SIM, GSM+GSM
4G
Dual SIM, GSM+GSM
Detailed Specs
Screen Size
6.4 inches
6.4 inches
6.7 inches
Screen Type
Super AMOLED
Super AMOLED
Super AMOLED
Screen Resolution
1080 x 2400 pixels
1080 x 2340 pixels
1080 x 2400 pixels
Pixel Density
411 ppi
403 ppi
393 ppi
Aspect Ratio
20:09
19.5:9
20:09
Screen to Body Ratio
84.92%
91%
87.17%
Screen Design
Waterdrop notch
Waterdrop notch
Punch hole
Screen Quality
FHD
FHD
FHD
Screen Protection
-
Gorilla Glass 3
Gorilla Glass 3
Peak Brightness
-
420 nits
-
Phone Variants
6GB 128GB
4GB 64GB, 6GB 128GB
8GB 128GB
Expandable Storage
Yes
Yes
Yes
RAM Type
LPDDR4X
LPDDR4X
LPDDR4X
Expandable Storage Capacity
Yes, 512 GB
Yes, 512 GB
Yes, 512 GB
OTG Support
Yes
Yes
Yes
Storage Type
-
UFS 2.1
UFS 2.1
Sensors
Light sensor, Proximity sensor, Accelerometer, Gyroscope
Light sensor, Proximity sensor, Accelerometer, Gyroscope
Light sensor, Proximity sensor, Accelerometer, Gyroscope
Operating System
Android v10 (Q)
Android v10 (Q)
Android v10 (Q)
GPU
Mali-G52
Mali-G72 MP3
Adreno 618
Chipset
MediaTek Helio P65
Samsung Exynos 9 Octa 9611
Qualcomm Snapdragon 730
CPU
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)
Octa core (2.2 GHz, Dual core, Kryo 470 + 1.8 GHz, Hexa Core, Kryo 470)
Custom User Interface
Samsung One UI
Samsung One UI
Samsung One UI
Clock Speed
2 GHz
2.3 GHz
2.2 GHz
Architecture
64 bit
64 bit
64 bit
Process Technology
12 nm
10 nm
8 nm
Battery Capacity
5000 mAh
6000 mAh
4500 mAh
Battery Removable
No
No
No
Battery Type
Li-ion
Li-ion
Li-ion
Charger Type
Fast, 15W
Fast, 15W
Fast, 25W
USB Type-C
Yes
Yes
Yes
Fast Charging
Yes
Yes
Yes
Announced On
24-Mar-20
18-Mar-20
5-Dec-19
Market Status
Available
Available
Available
Brand
Samsung
Samsung
Samsung
Model Number
SM-A315FZB1INS/SM-A315FZBWINS
SM-M215FZKDINS
SM-A715FZK2INS
Price Status
Confirmed
Confirmed
Confirmed
Price
Rs. 17,999
Rs. 13,499
Rs. 26,990
GPS
Yes A-GPS, Glonass
Yes A-GPS, Glonass
Yes A-GPS, Glonass
Audio Features
Dolby Atmos
Dolby Atmos
Dolby Atmos
NFC
Yes
No
Yes
Network Support
4G
4G
4G
Bluetooth
Yes
Yes
Yes
FM Radio
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
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 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) / 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), 3G Bands: UMTS 19...
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 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) / 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), 3G Bands: UMTS 19...
Front Video Recording
1920x1080 @ 30 fps
1920x1080 @ 30 fps
1920x1080 @ 30 fps
Front Camera Setup
Single, 20MP
Single, 20MP
Single, 32MP
Front Camera 1 Resolution
20 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 Aperture
f/2.2
f/2.2
f/2.2
Front Flash
No
No
No
Front Camera Features
-
HDR
HDR
Front Camera 1 Lens
-
26 mm focal length
0.8 micrometre pixel size
Front Sensor
-
CMOS
-
Weight
185 grams
188 grams
179 grams
Colors
Prism Crush Black, Prism Crush Blue, Prism Crush Red, Prism Crush White
Midnight Blue, Raven Black
Prism Crush Black, Prism Crush Blue, Prism Crush Silver
Dimensions
159.3 x 73.1 x 8.6 mm
159 x 75.1 x 8.9 mm
163.6 x 76 x 7.7 mm
SAR Value
Head: 1.13 W/kg
Head: 0.468 W/kg
Head: 0.836 W/kg
Build
-
Back: Plastic
Back: Plastic
OIS
No
No
No
Rear Flash
Yes, LED Flash
Yes, LED Flash
Yes, LED Flash
Rear Video Recording
1920x1080 @ 30 fps
3840x2160 @ 30 fps, 1920x1080 @ 30 fps
3840x2160 @ 30 fps
Rear Camera Features
8 x 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
Quad, 48MP + 8MP + 5MP + 5MP
Triple, 48MP + 8MP + 5MP
Quad, 64MP + 12MP + 5MP + 5MP
Rear Camera 1 Resolution
48 MP
48 MP
64 MP
Rear Camera 1 Type
f/2.0 (upto 8x Digital Zoom) Primary Camera
f/2.0 (upto 4x Digital Zoom) Primary Camera
f/1.8 (upto 8x Digital Zoom) Primary Camera
Rear Camera 1 Lens
26 mm focal length, 2" 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
8 MP
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
f/2.2, Wide Angle, Ultra-Wide Angle Camera
Rear Camera 3 Resolution
5 MP
5 MP
5 MP
Rear Camera 3 Type
f/2.4, Macro Camera
f/2.2, Depth 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
Rear Aperture
f/2.0
f/2.0
f/1.8
Rear Camera 2 Lens
-
12 mm focal length, 4.0" sensor size, 1.12 micrometre pixel size
-
Rear Sensor
-
CMOS image sensor
ISOCELL Plus
Fingerprint Scanner
Yes
Yes
Yes
Fingerprint Scanner Position
On-Screen
Rear
On-Screen
Fingerprint Scanner Type
Optical
-
Optical
Face Unlock
Yes
Yes
Yes
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