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Samsung Galaxy A31 vs Samsung Galaxy A71 vs Samsung Galaxy J7 Pro

Key Feature Comparison

7

Samsung Galaxy A31

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7.5

Samsung Galaxy A71

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6.3

Samsung Galaxy J7 Pro

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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 (2.2 GHz, Dual core, Kryo 470 + 1.8 GHz, Hexa Core, Kryo 470)

Qualcomm Snapdragon 730, Adreno 618

Octa core, 1.6 GHz, Cortex A53

Samsung Exynos 7 Octa 7870, Mali-T830 MP2

5000 mAh

Li-ion, Fast, 15W

4500 mAh

Li-ion, Fast, 25W

3600 mAh

Li-ion

6.4 inches

411 ppi, FHD

6.7 inches

393 ppi, FHD

5.5 inches

401 ppi, FHD

Quad, 48MP + 8MP + 5MP + 5MP

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

6.4 inches
6.7 inches
5.5 inches

Screen Type

Super AMOLED
Super AMOLED
Super AMOLED

Screen Resolution

1080 x 2400 pixels
1080 x 2400 pixels
1080 x 1920 pixels

Pixel Density

411 ppi
393 ppi
401 ppi

Aspect Ratio

20:09
20:09
-

Screen to Body Ratio

84.92%
87.17%
72.94%

Screen Design

Waterdrop notch
Punch hole
-

Screen Quality

FHD
FHD
FHD

Screen Protection

-
Gorilla Glass 3
-

Screen Refresh Rate

-
60 Hz
-

Phone Variants

6GB 128GB
8GB 128GB
3GB 64GB

Expandable Storage

Yes
Yes
Yes

RAM Type

LPDDR4X
LPDDR4X
LPDDR3

Expandable Storage Capacity

Yes, 512 GB
Yes, 512 GB
Yes, 256 GB

OTG Support

Yes
Yes
Yes

Storage Type

-
UFS 2.1
eMMC 5.1

Sensors

Light sensor, Proximity sensor, Accelerometer, Gyroscope
Light sensor, Proximity sensor, Accelerometer, Gyroscope
Light sensor, Proximity sensor, Accelerometer, Compass, Gyroscope

Operating System

Android v10 (Q)
Android v10 (Q)
Android v7.0 (Nougat)

GPU

Mali-G52
Adreno 618
Mali-T830 MP2

Chipset

MediaTek Helio P65
Qualcomm Snapdragon 730
Samsung Exynos 7 Octa 7870

CPU

Octa core (2 GHz, Dual core, Cortex A75 + 1.7 GHz, Hexa Core, Cortex A55)
Octa core (2.2 GHz, Dual core, Kryo 470 + 1.8 GHz, Hexa Core, Kryo 470)
Octa core, 1.6 GHz, Cortex A53

Custom User Interface

Samsung One UI
Samsung One UI
-

Clock Speed

2 GHz
2.2 GHz
1.6 GHz

Architecture

64 bit
64 bit
-

Process Technology

12 nm
8 nm
14 nm

Battery Capacity

5000 mAh
4500 mAh
3600 mAh

Battery Removable

No
No
No

Battery Type

Li-ion
Li-ion
Li-ion

Charger Type

Fast, 15W
Fast, 25W
-

USB Type-C

Yes
Yes
No

Fast Charging

Yes
Yes
-

Announced On

24-Mar-20
5-Dec-19
5-Jun-17

Market Status

Available
Available
Available

Brand

Samsung
Samsung
Samsung

Model Number

SM-A315FZB1INS/SM-A315FZBWINS
SM-A715FZK2INS
-

Price Status

Confirmed
Confirmed
Confirmed

Price

Rs. 17,999
Rs. 26,990
Rs. 20,995

GPS

Yes A-GPS, Glonass
Yes A-GPS, Glonass
Yes A-GPS, Glonass

Audio Features

Dolby Atmos
Dolby Atmos
-

NFC

Yes
Yes
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
v4.1

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
-

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) / 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 2300(band 40), FD-LTE 1800(band 3), 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz, 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz, 4G Speed: 50 Mbit/s 300 Mbit/s (LTE category 6), 3G Speed: HSDPA 42.2 Mbit/s , HSUPA 5.76 Mbit/s , GPRS: Ava...

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) / 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 2300(band 40), FD-LTE 1800(band 3), 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz, 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz, 4G Speed: 50 Mbit/s 300 Mbit/s (LTE category 6), 3G Speed: HSDPA 42.2 Mbit/s , GPRS: Available, EDGE: Availa...

Front Video Recording

1920x1080 @ 30 fps
1920x1080 @ 30 fps
1080p30fps

Front Camera Setup

Single, 20MP
Single, 32MP
Single, 13MP

Front Camera 1 Resolution

20 MP
32 MP
13 MP

Front Camera 1 Type

f/2.2 Primary Camera
f/2.2 Primary Camera
f/1.9, Wide Angle Primary Camera

Front Aperture

f/2.2
f/2.2
f/1.9

Front Flash

No
No
Yes, LED Flash

Front Camera Features

-
HDR
LED flash

Front Camera 1 Lens

-
0.8 micrometre pixel size
28 mm focal length

Weight

185 grams
179 grams
181 grams

Colors

Prism Crush Black, Prism Crush Blue, Prism Crush Red, Prism Crush White
Prism Crush Black, Prism Crush Blue, Prism Crush Silver
Black, Gold

Dimensions

159.3 x 73.1 x 8.6 mm
163.6 x 76 x 7.7 mm
152.5 x 74.8 x 8 mm

SAR Value

Head: 1.13 W/kg
Head: 0.836 W/kg
Head: 0.355 W/kg

Build

-
Back: Plastic
Case: Metal, Back: Metal

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

Rear Camera Features

8 x Digital Zoom, Auto Flash, Face detection, Touch to focus
8 x Digital Zoom, Auto Flash, Face detection, Touch to focus
Digital Zoom, Auto Flash, Face detection, Touch to focus

Rear Camera Setup

Quad, 48MP + 8MP + 5MP + 5MP
Quad, 64MP + 12MP + 5MP + 5MP
Single, 13MP

Rear Camera 1 Resolution

48 MP
64 MP
13 MP

Rear Camera 1 Type

f/2.0 (upto 8x Digital Zoom) Primary Camera
f/1.8 (upto 8x Digital Zoom) Primary Camera
f/1.7, Wide Angle Primary Camera

Rear Camera 1 Lens

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
27 mm focal length

Rear Camera 2 Resolution

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
-

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/2.2, Depth Camera
-

Rear Aperture

f/2.0
f/1.8
f/1.7

Rear Sensor

-
ISOCELL Plus
CMOS image sensor

Fingerprint Scanner

Yes
Yes
Yes

Fingerprint Scanner Position

On-Screen
On-Screen
-

Fingerprint Scanner Type

Optical
Optical
-

Face Unlock

Yes
Yes
-

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