Samsung Galaxy M31 vs Samsung Galaxy J7 2018
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 1.6 GHz
6000 mAh
3300 mAh
6.4 inches
5.5 inches
Quad, 64MP + 8MP + 5MP + 5MP
Single, 8MP
4G
4G
Detailed Specs
Screen Size
6.4 inches
5.5 inches
Screen Type
Super AMOLED
TFT
Screen Resolution
1080 x 2340 pixels
720 x 1280 pixels
Pixel Density
403 ppi
267 ppi
Aspect Ratio
19.5:9
16:09
Screen Protection
Gorilla Glass 3
-
Screen to Body Ratio
83.92%
71.40%
Screen Design
Regular notch
-
Screen Quality
FHD
-
Phone Variants
6GB 64GB, 8GB 128GB, 6GB 128GB
16GB 2GB RAM, 32GB 2GB RAM
Expandable Storage
Yes
Yes
RAM Type
LPDDR4X
-
Storage Type
UFS 2.1
eMMC 5.1
Expandable Storage Capacity
Yes, 512 GB
-
OTG Support
Yes
Yes
Sensors
Light sensor, Proximity sensor, Accelerometer, Compass, Gyroscope
Accelerometer, gyro, proximity, compass
Operating System
Android v10 (Q)
Android 8.0 (Oreo)
GPU
Mali-G72 MP3
Mali-T830 MP1
Chipset
Samsung Exynos 9 Octa 9611
Exynos 7870 Octa
CPU
Octa core (2.3 GHz, Quad core, Cortex A73 + 1.7 GHz, Quad core, Cortex A53)
Octa core 1.6 GHz
Custom User Interface
Samsung One UI
-
Clock Speed
2.3 GHz
1.6 GHz
Architecture
64 bit
-
Process Technology
10 nm
-
Battery Capacity
6000 mAh
3300 mAh
Battery Removable
No
No
Battery Type
Li-ion
Li-Ion
Charger Type
Fast, 15W
-
USB Type-C
Yes
-
Fast Charging
Yes
No
Announced On
25-Feb-20
5-Jun-18
Market Status
Available
Launched Globally
Brand
Samsung
Samsung
Model Number
SM-M315FZKDINS
-
Price Status
Confirmed
Expected
Price
Rs. 15,999
Rs. 12,990
GPS
Yes A-GPS, Glonass
A-GPS, GLONASS
Audio Features
Dolby Atmos
-
NFC
No
Yes
Network Support
4G
4G
Bluetooth
Yes
Yes
FM Radio
Yes
Yes
3.5mm Audio Jack
Yes
Yes
SIM Size
SIM1: Nano, SIM2: Nano
SIM1: Nano, SIM2: Nano
Wi-Fi
Yes, Wi-Fi 802.11, ac/b/g/n/n 5GHz
Wi-Fi 802.11 a/b/g/n/ac
Bluetooth Type
v5.0
v4.1
Audio Jack
3.5 mm
3.5 mm
SIM Slot(s)
Dual SIM, GSM+GSM, Dual VoLTE
Dual SIM, GSM+GSM
eSIM
No
No
Wi-Fi Features
Wi-Fi Direct, Mobile Hotspot
Wi-Fi Direct, hotspot
VoLTE
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: 1, 2, 3, 4, 5, 7, 12, 66, 3G bands: HSDPA 850 / 1700(AWS) / 1900 / 2100 - SM-J737U, HSDPA 850 / 1900 / 2100 - SM-J737A, 2G bands: GSM 850 / 900 / 1800 / 1900
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: 1, 2, 3, 4, 5, 7, 12, 66, 3G bands: HSDPA 850 / 1700(AWS) / 1900 / 2100 - SM-J737U, HSDPA 850 / 1900 / 2100 - SM-J737A, 2G bands: GSM 850 / 900 / 1800 / 1900
Front Video Recording
1920x1080 @ 30 fps
-
Front Camera Features
HDR
-
Front Camera Setup
Single, 32MP
Single, 5MP
Front Camera 1 Resolution
32 MP
5 MP
Front Camera 1 Type
f/2.0 Primary Camera
f/1.7 Primary Camera
Front Camera 1 Lens
26 mm focal length, 2.8" sensor size, 0.8 micrometre pixel size
-
Front Sensor
Exmor RS
-
Front Aperture
f/2.0
-
Front Flash
No
-
Weight
191 grams
181 grams
Colors
Black, Blue
Black, Blue, Gold
Build
Back: Plastic
Plastic frame
Dimensions
159.2 x 75.1 x 8.9 mm
153.2 x 76.2 x 8.6 mm
SAR Value
Head: 0.383 W/kg
-
OIS
No
-
Rear Flash
Yes, LED Flash
LED Flash
Rear Video Recording
3840x2160 @ 30 fps, 1920x1080 @ 30 fps, 1280x720 @ 240 fps
1080p @ 30fps
Rear Camera Features
8 x Digital Zoom, Auto Flash, Face detection, Touch to focus
HDR, panorama
Rear Camera Setup
Quad, 64MP + 8MP + 5MP + 5MP
Single, 8MP
Rear Camera 1 Resolution
64 MP
8 MP
Rear Camera 1 Type
f/1.8 (upto 8x Digital Zoom) Primary Camera
f/1.7 Primary Camera
Rear Camera 1 Lens
26 mm focal length, 1.7" sensor size, 0.8 micrometre pixel size
-
Rear Camera 2 Resolution
8 MP
-
Rear Camera 2 Type
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
-
Rear Camera 3 Resolution
5 MP
-
Rear Camera 3 Type
f/2.4, Macro Camera
-
Rear Camera 3 Lens
25 mm focal length, 5.0" sensor size, 1.12 micrometre pixel size
-
Rear Camera 4 Resolution
5 MP
-
Rear Camera 4 Type
f/2.2, Depth Camera
-
Rear Sensor
ISOCELL Plus
-
Rear Aperture
f/1.8
F1.7
Fingerprint Scanner
Yes
No
Fingerprint Scanner Position
Rear
-
Face Unlock
Yes
-