Samsung Galaxy M31 vs Samsung Galaxy A7 (2018) vs Samsung Galaxy M40
Key Feature Comparison
Show differences only
At a Glance
Show differences only
Octa core (2.3 GHz, Quad core, Cortex A73 + 1.7 GHz, Quad core, Cortex A53)
Octa core (2.2 GHz, Dual core, Cortex A73 + 1.6 GHz, Hexa Core, Cortex A53)
Octa core (2 GHz, Dual core, Kryo 460 + 1.7 GHz, Hexa Core, Kryo 460)
6000 mAh
3300 mAh
3500 mAh
6.4 inches
6.0 inches
6.3 inches
Quad, 64MP + 8MP + 5MP + 5MP
Triple, 24MP + 5MP + 8MP
Triple, 32MP + 8MP + 5MP
4G
4G
4G
Detailed Specs
Screen Size
6.4 inches
6.0 inches
6.3 inches
Screen Type
Super AMOLED
Super AMOLED
TFT
Screen Resolution
1080 x 2340 pixels
1080 x 2220 pixels
1080 x 2340 pixels
Pixel Density
403 ppi
411 ppi
409 ppi
Aspect Ratio
19.5:9
18.5:9
19.5:9
Screen Protection
Gorilla Glass 3
Gorilla Glass 3
Gorilla Glass 3
Screen to Body Ratio
83.92%
74.78%
91.80%
Screen Design
Regular notch
Bezel-less
Punch hole
Screen Quality
FHD
FHD
FHD
Phone Variants
6GB 64GB, 8GB 128GB, 6GB 128GB
4GB 64GB, 6GB 128GB
6GB 128GB
Expandable Storage
Yes
Yes
Yes
RAM Type
LPDDR4X
LPDDR4
LPDDR4X
Storage Type
UFS 2.1
eMMC 5.1
eMMC 5.1
Expandable Storage Capacity
Yes, 512 GB
Yes, 512 GB
Yes, 512 GB
OTG Support
Yes
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 v8.0 (Oreo)
Android v9.0 (Pie)
GPU
Mali-G72 MP3
Mali-G71 MP2
Adreno 612
Chipset
Samsung Exynos 9 Octa 9611
Samsung Exynos 7 Octa 7885
Qualcomm Snapdragon 675
CPU
Octa core (2.3 GHz, Quad core, Cortex A73 + 1.7 GHz, Quad core, Cortex A53)
Octa core (2.2 GHz, Dual core, Cortex A73 + 1.6 GHz, Hexa Core, Cortex A53)
Octa core (2 GHz, Dual core, Kryo 460 + 1.7 GHz, Hexa Core, Kryo 460)
Custom User Interface
Samsung One UI
-
Samsung One UI
Clock Speed
2.3 GHz
2.2 GHz
2 GHz
Architecture
64 bit
64 bit
64 bit
Process Technology
10 nm
14 nm
11 nm
Battery Capacity
6000 mAh
3300 mAh
3500 mAh
Battery Removable
No
No
No
Battery Type
Li-ion
Li-ion
Li-ion
Charger Type
Fast, 15W
-
Fast, 15W
USB Type-C
Yes
No
Yes
Fast Charging
Yes
-
Yes
Announced On
25-Feb-20
5-Sep-18
5-Jun-19
Market Status
Available
Available
Available
Brand
Samsung
Samsung
Samsung
Model Number
SM-M315FZKDINS
SM-A750FZBDINS
-
Price Status
Confirmed
Confirmed
Confirmed
Price
Rs. 15,999
Rs. 16,846
Rs. 15,999
GPS
Yes A-GPS, Glonass
Yes A-GPS, Glonass
Yes A-GPS, Glonass
Audio Features
Dolby Atmos
Dolby Atmos
Dolby Atmos
NFC
No
No
Yes
Network Support
4G
4G
4G
Bluetooth
Yes
Yes
Yes
FM Radio
Yes
Yes
Yes
3.5mm Audio Jack
Yes
Yes
No
SIM Size
SIM1: Nano, SIM2: Nano
SIM1: Nano, SIM2: Nano
SIM1: Nano, SIM2: Nano (Hybrid)
Wi-Fi
Yes, Wi-Fi 802.11, ac/b/g/n/n 5GHz
Yes, Wi-Fi 802.11, a/ac/b/g/n
Yes, Wi-Fi 802.11, a/ac/b/g/n/n 5GHz
Bluetooth Type
v5.0
v5.0
v5.0
Audio Jack
3.5 mm
3.5 mm
USB Type-C
SIM Slot(s)
Dual SIM, GSM+GSM, Dual VoLTE
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 13) / 700(band 17) / 800(band 20) / 850(band 26), 3G...
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 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...
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) / 850(band 26), 3G...
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 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...
Front Video Recording
1920x1080 @ 30 fps
1080p30fps
1920x1080 @ 30 fps
Front Camera Features
HDR
HDR
HDR
Front Camera Setup
Single, 32MP
Single, 24MP
Single, 16MP
Front Camera 1 Resolution
32 MP
24 MP
16 MP
Front Camera 1 Type
f/2.0 Primary Camera
f/2.0, Wide Angle Primary Camera
f/2.0 Primary Camera
Front Camera 1 Lens
26 mm focal length, 2.8" sensor size, 0.8 micrometre pixel size
26 mm focal length
-
Front Sensor
Exmor RS
-
CMOS
Front Aperture
f/2.0
f/2.0
f/2.0
Front Flash
No
Yes, LED Flash
No
Weight
191 grams
169 grams
168 grams
Colors
Black, Blue
Black, Blue, Gold
Midnight Blue, Seawater Blue, Cocktail Orange
Build
Back: Plastic
Back: Mineral Glass
Back: Plastic
Dimensions
159.2 x 75.1 x 8.9 mm
159.8 x 76.8 x 7.5 mm
155.3 x 73.9 x 7.9 mm
SAR Value
Head: 0.383 W/kg
-
Head: 0.200 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, 1280x720 @ 240 fps
1920x1080 @ 30 fps
3840x2160 @ 30 fps
Rear Camera Features
8 x Digital Zoom, Auto Flash, Face detection, Touch to focus
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 + 8MP + 5MP + 5MP
Triple, 24MP + 5MP + 8MP
Triple, 32MP + 8MP + 5MP
Rear Camera 1 Resolution
64 MP
24 MP
32 MP
Rear Camera 1 Type
f/1.8 (upto 8x Digital Zoom) Primary Camera
f/1.7, Wide Angle (78 degree field-of-view) Primary Camera
f/1.7 (upto 8x Digital Zoom) Primary Camera
Rear Camera 1 Lens
26 mm focal length, 1.7" sensor size, 0.8 micrometre pixel size
27 mm focal length, 2.8" sensor size, 0.9 micrometre pixel size
2.8" sensor size, 0.8 micrometre pixel size
Rear Camera 2 Resolution
8 MP
5 MP
8 MP
Rear Camera 2 Type
f/2.2, Wide Angle, Ultra-Wide Angle Camera
f/2.2, Depth 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
Rear Camera 3 Resolution
5 MP
8 MP
5 MP
Rear Camera 3 Type
f/2.4, Macro Camera
f/2.4, Wide Angle, Ultra-Wide Angle Camera
f/2.2, Depth Camera
Rear Camera 3 Lens
25 mm focal length, 5.0" sensor size, 1.12 micrometre pixel size
18 mm focal length
-
Rear Camera 4 Resolution
5 MP
-
-
Rear Camera 4 Type
f/2.2, Depth Camera
-
-
Rear Sensor
ISOCELL Plus
Exmor-RS CMOS Sensor
CMOS image sensor
Rear Aperture
f/1.8
f/1.7
f/1.7
Fingerprint Scanner
Yes
Yes
Yes
Fingerprint Scanner Position
Rear
Side
Rear
Face Unlock
Yes
Yes
Yes