Samsung Galaxy J7 Duo vs Samsung Galaxy J3 (2017) Specs Comparison

Availability

Officially announced
	May 14, 2017

Design

Dimensions
6.04 x 3.04 x 0.32 inches 153.5 x 77.2 x 8.2 mm	5.55 x 2.76 x 0.34 inches 141 x 70.1 x 8.6 mm
Weight
6.14 oz / 174.0 g	5.22 oz / 148.0 g
Materials
Back: Plastic
Biometrics
2D Face unlock, Fingerprint (touch)
Features
Touch sensitive control keys	Touch sensitive control keys
Keys
Left: Volume control; Right: Lock/Unlock key	Left: Volume control; Right: Lock/Unlock key
Colors
Black, Gold	Silver

Display

Size
5.5-inch, 70.40% screen-to-body	5.0-inch, 69.74% screen-to-body
Type
Super AMOLED	TFT
Resolution
1280x720px, 16:9 ratio, 267 PPI	1280x720px, 294 PPI
Colors
16 777 216	16 777 216
Protection
Corning Gorilla Glass

Hardware

System chip
Samsung Exynos 7 Octa 7884 (14 nm)	Samsung Exynos 7 Quad 7570 (14 nm)
Processor
Octa-core 1600 MHz ARM Cortex-A53	Quad-core 1400 MHz ARM Cortex-A53
GPU
ARM Mali-G71	Mali-T720
Memory
4GB/32GB	1.5GB/16GB
Storage expansion
microSDXC up to 256 GB	microSDXC up to 256 GB
OS
Android (8.0 Oreo)	Android (7.0 Nougat)

Battery

Type
3000 mAh	2600 mAh, Li - Ion

Camera

Rear
Dual camera	Single camera
Main camera
13 MP (PDAF) Aperture size: F1.9 Focal length: 27 mm Sensor size: 1/3.06" Pixel size: 1.12 μm	5 MP (Autofocus, CMOS image sensor) Aperture size: F1.9
Second camera
5 MP (Depth information) Aperture size: F1.9 Focal Length: 24 mm Sensor size: 1/5" Pixel size: 1.12 μm
Flash
LED	LED
Video recording
1080p (30 fps) Video calling, Video sharing	1080p (30 fps) Video calling, Video sharing
Front
8 MP (Flash) Video capture: 1080p	2 MP

Connectivity & Features

Bluetooth
5.0	4.2
WLAN
a,b,g,n,ac,dual-band Hotspot, Wi-Fi Direct 802.11 a, b, g, n, ac	b,g,n Hotspot, Wi-Fi Direct 802.11 b, g, n
USB
microUSB, USB 2.0	microUSB, USB 2.0
Sensors
Accelerometer, Ambient light sensor, Proximity sensor	Accelerometer, Gyroscope, Compass, Proximity sensor
Hearing aid compatible
	M3/T3
Location
GPS, A-GPS, Glonass, BeiDou	GPS, A-GPS, Glonass
Other
VoIP, Tethering, Computer sync, OTA sync	UMA (Wi-Fi Calling), VoIP, Tethering, Computer sync, OTA sync

Multimedia

Headphones
3.5mm jack	3.5mm jack
Speakers
Earpiece, Loudspeaker	Earpiece, Loudspeaker
Features
Album art cover, Background playback	Album art cover, Background playback
Screen mirroring
Wireless screen share	Wireless screen share
Radio
FM
Additional microphone(s)
	Noise cancellation

Cellular

4G (FDD) Bands
1, 3, 5, 7, 8, 20	2, 4, 5, 12
4G (TDD) Bands
38, 40, 41
3G Bands
5, 8, 2, 1	5, 4, 2
Data Speed
LTE, HSPA, HSUPA, UMTS	LTE, HSPA
Dual SIM
Yes
SIM type
Micro SIM	Nano SIM
HD Voice
	Yes

Phone Features

Notifications
Haptic feedback, Music ringtones, Vibration	Haptic feedback
Other features
Voice dialing, Voice commands, Voice recording	Voice dialing, Voice commands, Voice recording, TTY/TDD

Regulatory Approval

FCC approval
	Date approved: Feb 08, 2017 FCC ID value: A3LSMJ327A
Measured SAR
Head: 0.48 W/kg	Head: 0.73 W/kg Body: 1.04 W/kg Simultaneous Transmission: 1.32 W/kg Wireless Router: 1.10 W/kg

Alternative variants

For AT&T

4G (FDD) Bands	2, 3, 4, 5, 7, 12

Discover more

Full Specs Samsung Galaxy J7 Duo Specs

Full Specs Samsung Galaxy J3 (2017) Specs