Samsung Galaxy M51 vs Samsung Galaxy M31s vs Oppo A71
- Updated: 11th Sep 2020, 10:33 IST
Key Feature Comparison
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At a Glance
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Octa core (2.2 GHz, Dual core, Kryo 470 + 1.8 GHz, Hexa Core, Kryo 470)
Qualcomm Snapdragon 730G, Adreno 618
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 (1.5 GHz, Quad core, Cortex A53 + 1 GHz, Quad core, Cortex A53)
MediaTek MT6750, Mali-T860 MP2
7000 mAh
Li-ion, Fast, 25W
6000 mAh
Li-ion, Fast, 25W
3010 mAh
Li-ion
6.7 inches
393 ppi, FHD
6.5 inches
405 ppi, FHD
5.2 inches
282 ppi
Quad, 64MP + 12MP + 5MP + 5MP
3840x2160 @ 30 fps, 1920x1080 @ 30 fps
Quad, 64MP + 12MP + 5MP + 5MP
3840x2160 @ 30 fps
Single, 13MP
1920x1080 @ 30 fps
4G
Dual SIM, GSM+GSM
4G
Dual SIM, GSM+GSM
4G
Dual SIM, GSM+GSM
Detailed Specs
Screen Size
6.7 inches
6.5 inches
5.2 inches
Screen Type
Super AMOLED
Super AMOLED
IPS LCD
Screen Resolution
1080 x 2400 pixels
1080 x 2400 pixels
720 x 1280 pixels
Pixel Density
393 ppi
405 ppi
282 ppi
Aspect Ratio
20:09
20:09
-
Screen Protection
Gorilla Glass 3
Gorilla Glass 3
Gorilla Glass 3
Screen to Body Ratio
91%
91%
68.04%
Screen Design
Punch hole
Punch hole
-
Screen Quality
FHD
FHD
-
Peak Brightness
420 nits
420 nits
-
Screen Refresh Rate
-
60 Hz
-
Phone Variants
8GB 128GB, 6GB 128GB
8GB 128GB, 6GB 128GB
3GB 16GB
Expandable Storage
Yes
Yes
Yes
RAM Type
LPDDR4X
LPDDR4X
-
Storage Type
UFS 2.1
UFS 2.1
-
Expandable Storage Capacity
Yes, 512 GB
Yes, 512 GB
Yes, 256 GB
Sensors
Light sensor, Proximity sensor, Accelerometer, Compass, Gyroscope
Light sensor, Proximity sensor, Accelerometer, Compass, Gyroscope
Light sensor, Proximity sensor, Accelerometer, Compass
Operating System
Android v10 (Q)
Android v10 (Q)
Android v7.1 (Nougat)
GPU
Adreno 618
Mali-G72 MP3
Mali-T860 MP2
Chipset
Qualcomm Snapdragon 730G
Samsung Exynos 9 Octa 9611
MediaTek MT6750
CPU
Octa core (2.2 GHz, Dual core, Kryo 470 + 1.8 GHz, Hexa Core, Kryo 470)
Octa core (2.3 GHz, Quad core, Cortex A73 + 1.7 GHz, Quad core, Cortex A53)
Octa core (1.5 GHz, Quad core, Cortex A53 + 1 GHz, Quad core, Cortex A53)
Custom User Interface
Samsung One UI
Samsung One UI
ColorOS
Clock Speed
2.2 GHz
2.3 GHz
1.5 GHz
Architecture
64 bit
64 bit
64 bit
Process Technology
8 nm
10 nm
-
Battery Capacity
7000 mAh
6000 mAh
3010 mAh
Battery Removable
No
No
No
Battery Type
Li-ion
Li-ion
Li-ion
Charger Type
Fast, 25W
Fast, 25W
-
USB Type-C
Yes
Yes
No
Fast Charging
Yes
Yes
-
Announced On
31-Aug-20
30-Jul-20
5-Sep-17
Market Status
Available
Available
Out of Stock
Brand
Samsung
Samsung
OPPO
Model Number
SM-M515FZBEINS
SM-M317FZBDINS
-
Price Status
Confirmed
Confirmed
Confirmed
Price
Rs. 19,999
Rs. 18,499
Rs. 12,500
GPS
Yes A-GPS, Glonass
Yes A-GPS, Glonass
Yes A-GPS
Audio Features
Dolby Atmos
Dolby Atmos
Active noise cancellation with dedicated mic
NFC
Yes
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, a/ac/b/g/n/n 5GHz
Yes, Wi-Fi 802.11, ac/b/g/n/n 5GHz
Yes, Wi-Fi 802.11, b/g/n
Bluetooth Type
v5.0
v5.0
v4.0
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
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) / 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) / 900(band 8) / 850(band 5), 3G Bands: UMTS 2100 / 850 / 900 MHz, 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz, GPRS: Available, EDGE: Available...
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) / 1700(band 4) / 850(band 5) / 700(band 17) / 800(band 20) / 850(band 26), 3G Bands: UMTS 19...
3G Bands: UMTS 2100 / 850 / 900 MHz, 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz, GPRS: Available, EDGE: Available...
Front Video Recording
1920x1080 @ 30 fps
3840x2160 @ 30 fps
-
Front Camera Features
HDR
HDR
-
Front Camera Setup
Single, 32MP
Single, 32MP
Single, 5MP
Front Camera 1 Resolution
32 MP
32 MP
5 MP
Front Camera 1 Type
f/2.2, Wide Angle Primary Camera
f/2.2 Primary Camera
f/2.4 Primary Camera
Front Camera 1 Lens
26 mm focal length, 2.8" sensor size, 0.8 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/2.4
Front Flash
No
No
-
Weight
213 grams
203 grams
137 grams
Colors
Celestial Black, Electric Blue
Mirage Black, Mirage Blue
Black, Gold
Build
Back: Plastic
Back: Plastic
Front glass, aluminum body
Dimensions
163.9 x 76.3 x 9.5 mm
159.3 x 74.4 x 9.3 mm
148.1 x 73.8 x 7.6 mm
SAR Value
Head: 1.381 W/kg
Head: 1.38 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
Rear Camera Features
8 x Digital Zoom, Auto Flash, Face detection, Touch to focus
10 x Digital Zoom, Auto Flash, Face detection, Touch to focus
Digital Zoom, Auto Flash, Face detection, Touch to focus
Rear Camera Setup
Quad, 64MP + 12MP + 5MP + 5MP
Quad, 64MP + 12MP + 5MP + 5MP
Single, 13MP
Rear Camera 1 Resolution
64 MP
64 MP
13 MP
Rear Camera 1 Type
f/1.8 (upto 8x Digital Zoom), Wide Angle Primary Camera
f/1.8 (upto 10x Digital Zoom), Wide Angle Primary Camera
f/2.2 Primary Camera
Rear Camera 1 Lens
26 mm focal length, 1.7" 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
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/2.4, Depth Camera
-
Rear Sensor
Exmor-RS CMOS Sensor, ISOCELL Plus
Exmor-RS CMOS Sensor
-
Rear Aperture
f/1.8
f/1.8
f/2.2
Fingerprint Scanner
Yes
Yes
No
Fingerprint Scanner Position
Side
Side
-
Face Unlock
Yes
Yes
-
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