Samsung Galaxy J7 Duo vs vivo Y31 5G

Comparing the Samsung Galaxy J7 Duo vs vivo Y31 5G across performance, display, camera, battery, storage and user rating to help determine the better smartphone.

Here is the summary of the results:

Performance: vivo Y31 5G runs at a higher processing speed of 2.2 GHz, while Samsung Galaxy J7 Duo runs at 1.6 GHz, making vivo Y31 5G the better performer.

Display: vivo Y31 5G offers a screen size of 6.68 inches, while Samsung Galaxy J7 Duo offers 5.5 inches, making vivo Y31 5G the larger display of the two. Samsung Galaxy J7 Duo features a Super AMOLED display compared to vivo Y31 5G's LCD, making Samsung Galaxy J7 Duo the better display of the two.

Rear Camera: vivo Y31 5G offers a higher rear camera resolution with 50 MP, while Samsung Galaxy J7 Duo offers 13 MP, making vivo Y31 5G better for rear camera photography.

Front Camera: Both Samsung Galaxy J7 Duo and vivo Y31 5G feature a 8 MP primary front camera.

Battery: vivo Y31 5G offers a higher battery capacity with 6500 mAh, while Samsung Galaxy J7 Duo offers 3000 mAh, making vivo Y31 5G better for longer battery life.

Storage: Samsung Galaxy J7 Duo offers higher internal storage with 32 GB, while vivo Y31 5G offers 128 GB, making Samsung Galaxy J7 Duo the better option for storage.

User Rating: Samsung Galaxy J7 Duo and vivo Y31 5G both receive the same user rating of 4.3.

Samsung Galaxy J7 Duo

₹17,990

(Discontinued)

vivo Y31 5G

₹19,999

@ Flipkart

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Show Only Differences

Summary

Spec Score

72%

77%

Release Date

13 Apr, 2018

13 Sep, 2025

Performance


Samsung Exynos 7 Octa	Snapdragon 4 Gen 2
Tru-Octa Core (upto 1.6 GHz)	Octa Core (upto 2.2 GHz)
4 GB RAM	4 GB RAM

Display


5.5 inches (13.97 cm)	6.68 inches (16.97 cm)
Super AMOLED	LCD
720x1280 px (HD)	720x1608 px (HD+)
N/A	120 Hz Refresh Rate

Rear Camera


13 MP Primary Camera	50 MP Wide Angle Primary Camera
5 MP Depth Camera	0.08 MP Camera

Front Camera


8 MP	8 MP Wide Angle Lens

Battery


3000 mAh	6500 mAh
N/A	44W Flash Charging
No Wireless Charging	No Wireless Charging

Storage

32 GB	128 GB
eMMC 5.1	eMMC 5.1

User Ratings

4.3/5

(3,202 ratings)

4.3/5

(652 ratings)

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Not Available in any store

₹19,999

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Video

1 More Video

There are no videos available for the device.

User Feedback

General

Launch Date

N/A	Sep 13, 2025 (Official)

Operating System

Android v8.0 (Oreo)

Android v15

Custom UI

N/A	Funtouch OS

Performance

Performance Rating

Good

Chipset

Samsung Exynos 7 Octa

Qualcomm Snapdragon 4 Gen 2

View Details

Processor

Octa core, 1.6 GHz

Octa core

2.2 GHz, Dual core, Cortex A78 1.95 GHz, Hexa Core, Cortex A55

Architecture (The higher, the better)

N/A

64 bit

Fabrication (The lower, the better)

14 nm

4 nm

Graphics (GPU)

N/A	Adreno 613

RAM

4 GB	4 GB / 6 GB

RAM Type

LPDDR3

LPDDR4X

Display

Display Rating

Excellent

Very Good

Display Type

Super AMOLED

LCD

Screen Size

5.5 inches (13.97 cm)

6.68 inches (16.97 cm)

Resolution

720x1280 px (HD)

720x1608 px (HD+)

Peak Brightness

N/A

1000 nits

HBM Brightness

N/A

1000 nits

Refresh Rate

N/A

120 Hz

Aspect Ratio

16:9

20:9

Pixel Density

267 ppi

264 ppi

Screen to Body Ratio (calculated)

70.21 %

84.2 %

Screen Protection

N/A

Yes

Bezel-less Display

N/A	Yes with punch-hole display

Design

Height

153.5 mm

166.14 mm

Width

77.2 mm

77.01 mm

Thickness

8.2 mm

8.39 mm

Weight

174 grams

209 grams

Build Material

N/A	Back: Plastic

Water Resistance

N/A	Yes Water resistant IP68 IP69 (up to 30 minutes in a depth of 1.5 meter)

Ruggedness

N/A	Dust proof Shock proof

Rear Camera

Rear Camera Rating

Good

Resolution

13 MP
Primary Cameraf/1.9CMOS image sensor

50 MP
Primary Cameraf/1.8 Wide Angle

5 MP
f/1.9 Depth Camera

0.08 MP
f/3.0

Autofocus

Yes

OIS

Flash

Yes LED Flash

Yes LED Flash + Aura Light

Image Resolution

4128 x 3096 Pixels

8150 x 6150 Pixels

Settings

Exposure compensation ISO control

Shooting Modes

Continuous Shooting
High Dynamic Range mode (HDR)

Camera Features

Digital Zoom
Auto Flash
Face detection
Touch to focus

Video Recording

1920x1080 @ 30 fps

Full HD @30 fps

Front Camera

Front Camera Rating

Good

Very Good

Resolution

8 MP
f/1.9 Primary Camera

8 MP
f/2.0 Wide Angle Primary Camera

Autofocus

Flash

Yes LED Flash

N/A

Video Recording

N/A	Full HD @30 fps

Battery

Battery Rating

Very Good

Excellent

Capacity

3000 mAh

6500 mAh

Battery Type

Li-ion

TalkTime

Up to 20 Hours(3G)

N/A

Quick Charging

N/A	Yes 44W Flash Charging 50% in 38 minutes

Reverse Charging

N/A

Yes

Storage

Internal Storage

32 GB

128 GB

Storage Type

eMMC 5.1

Expandable Storage

Yes Up to 256 GB

Yes Up to 2 TB

Network & Connectivity

SIM Slot(s)

Dual SIM

SIM Type

SIM1: Micro SIM2: Micro

SIM1: Nano SIM2: Nano (Hybrid)

Network Support

5G Not Supported 4G

5G 4G

VoLTE

N/A

Yes

SIM 1

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)

5G Bands:

FDD N1 / N3 / N5 / N8 / N28
TDD N40 / N77 / N78

N/A	4G Bands: TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41) FD-LTE 2100(band 1) / 1800(band 3) / 900(band 8) / 700(band 28) / 850(band 5)

SIM 2

N/A	5G Bands: FDD N1 / N3 / N5 / N8 / N28 TDD N40 / N77 / N78

N/A	4G Bands: TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41) FD-LTE 2100(band 1) / 1800(band 3) / 900(band 8) / 700(band 28) / 850(band 5)

SAR Value

Head: 0.478 W/kg

Head: 1.130 W/kg Body: 0.986 W/kg

Wi-Fi

Yes Wi-Fi 5 (802.11 a/b/g/n/ac) 5GHz

Wi-Fi Features

Wi-Fi Direct Mobile Hotspot

Mobile Hotspot

Bluetooth

Yes v5.0

Yes v4.2

GPS

Yes with A-GPS Glonass

NFC

Multimedia

Stereo Speakers

N/A

Yes

Audio Jack

3.5 mm

USB Type-C

Sensors

Fingerprint Sensor

Yes

Fingerprint Sensor Position

Front

Side

Other Sensors

Proximity sensor Accelerometer

Light sensor Proximity sensor Accelerometer

Applications

Samsung Pay Mini

N/A

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₹19,999

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