Samsung Galaxy J3 (2017) DUOS vs. Samsung Galaxy J7 (2017) DUOS

Phone Comparison, Reviews and Tests

In depth comparison and review of Samsung Galaxy J3 (2017) DUOS and Samsung Galaxy J7 (2017) DUOS. Compare sizes, cameras, batteries, memory, and other important specifications and features to easily choose the right phone for you. Our goal is to help you uncover differences between the products and find the phone that will best fit your needs.

Phone Specifications Comparison

Samsung Galaxy J3 (2017) DUOS vs. Samsung Galaxy J7 (2017) DUOS Comparison Chart
DESIGN AND DIMENSIONS Samsung Galaxy J3 (2017) DUOS Samsung Galaxy J7 (2017) DUOS
Product Type Smartphone Smartphone
Manufacturer Model Number SM-J330F SM-J730F/DS
Form Factor Touch Touch
Height 143.2 mm 152.5 mm Samsung Galaxy J7 (2017) DUOS has greater height than Samsung Galaxy J3 (2017) DUOS.
Width 70.3 mm 74.8 mm Samsung Galaxy J7 (2017) DUOS has greater width than Samsung Galaxy J3 (2017) DUOS.
Depth 8.2 mm 8 mm Samsung Galaxy J7 (2017) DUOS is narrower than Samsung Galaxy J3 (2017) DUOS.
Weight 142 g 181 g Samsung Galaxy J3 (2017) DUOS is lighter than Samsung Galaxy J3 (2017) DUOS.
Body Colour Black | Blue Black
Body Material Metal -
Waterproof (Water-resistant) - -
SAR Value 1.32 W/kg (body), 0.658 W/kg (head) 1.33 W/kg (body), 0.567 W/kg (head)
Connector Type Micro-USB - 5 pin Micro-USB Type B
Headset jack - mini-phone 3.5mm
Micro-USB - 5 pin Micro-USB Type B
Headset jack - mini-phone 3.5mm
SIM Card Type (Size) Nano SIM Nano SIM
SIM Card Qty Dual-SIM Dual-SIM
DISPLAY Samsung Galaxy J3 (2017) DUOS Samsung Galaxy J7 (2017) DUOS
Display Type LCD display OLED display
Display Technology PLS Full HD Super AMOLED
Screen Size (Display Size) 5" 5.5" Samsung Galaxy J7 (2017) DUOS has larger screen size than Samsung Galaxy J3 (2017) DUOS.
Screen Resolution (Display Resolution) 1280 x 720 pixels 1920 x 1080 pixels Samsung Galaxy J7 (2017) DUOS has better screen resolution than Samsung Galaxy J3 (2017) DUOS.
Display Format HD Full HD
Colour Depth 16.7 million colours 16.7 million colours Both phones have the same color depth.
Display Features - Always-on display
PROCESSOR Samsung Galaxy J3 (2017) DUOS Samsung Galaxy J7 (2017) DUOS
Clock Speed 1.4 GHz 1.6 GHz Samsung Galaxy J7 (2017) DUOS has higher clock speed than Samsung Galaxy J3 (2017) DUOS.
Processor Core Qty Quad-core 8-core Samsung Galaxy J7 (2017) DUOS has higher processor core quantity than Samsung Galaxy J3 (2017) DUOS.
MEMORY Samsung Galaxy J3 (2017) DUOS Samsung Galaxy J7 (2017) DUOS
RAM 2 GB 3 GB Samsung Galaxy J7 (2017) DUOS has more RAM than Samsung Galaxy J3 (2017) DUOS.
Internal Memory Size (Storage Capacity) 16 GB 16 GB Both phones have the same internal memory capacity.
User Memory 10.3 GB 10 GB
Supported Flash Memory Cards (Expandable Memory) microSDHC, microSDXC - up to 256 GB microSDHC, microSDXC - up to 256 GB
CAMERA Samsung Galaxy J3 (2017) DUOS Samsung Galaxy J7 (2017) DUOS
MAIN CAMERA
Number of Main Cameras 1 1
Sensor Resolution 13 Megapixel 13 Megapixel Both phones have the same camera resolution.
Lens Aperture F/1.9 F/1.7 Samsung Galaxy J7 (2017) DUOS has better lens aperture than Samsung Galaxy J3 (2017) DUOS.
Focus Adjustment Automatic Automatic
Special Effects HDR -
Camera Modes Panorama, Pro mode, night mode -
Light Source LED light LED flash
Video Resolutions 1920 x 1080 (1080p) at 30 fps 1920 x 1080 (1080p) at 30 fps
FRONT CAMERA
Number of Front Cameras 1 1
Sensor Resolution (Front) 5 Megapixel 13 Megapixel Samsung Galaxy J7 (2017) DUOS has better front camera resolution than Samsung Galaxy J3 (2017) DUOS.
Lens Aperture (Front) F/2.2 F/1.9 Samsung Galaxy J7 (2017) DUOS has better front lens aperture than Samsung Galaxy J3 (2017) DUOS.
Special Effects (Front) HDR -
BATTERY AND CHARGING Samsung Galaxy J3 (2017) DUOS Samsung Galaxy J7 (2017) DUOS
Battery Capacity (Battery Size) 2400 mAh 3600 mAh Samsung Galaxy J7 (2017) DUOS has larger battery capacity than Samsung Galaxy J3 (2017) DUOS.
Talk Time 900 minutes 1440 minutes Samsung Galaxy J7 (2017) DUOS has longer battery life when making calls than Samsung Galaxy J3 (2017) DUOS.
Run Time Details Playback (Music): up to 61 hrs
Continuous browsing (3G): up to 12 hrs
Playback (video): up to 14 hrs
Continuous browsing (4G): up to 14 hrs
Talk (3G): up to 900 min
Continuous browsing (Wi-Fi): up to 14 hrs
Active online usage (WCDMA): up to 12 hrs
Active online usage (LTE): up to 15 hrs
Active online usage (Wi-Fi): up to 16 hrs
Playback (video): up to 18 hrs
Playback (audio): up to 59 hrs
Playback (audio (Always On Display Off)): up to 91 hrs
Talk (WCDMA): up to 1440 min
CELLULAR Samsung Galaxy J3 (2017) DUOS Samsung Galaxy J7 (2017) DUOS
Technology WCDMA (UMTS) / GSM WCDMA (UMTS) / GSM
Mobile Broadband Generation 4G 4G Both phones have the same mobile network generation.
Operating System Android 7.0 Nougat Google Android
Navigation GPS, GLONASS, BeiDou GPS, GLONASS, BeiDou
COMMUNICATIONS Samsung Galaxy J3 (2017) DUOS Samsung Galaxy J7 (2017) DUOS
Data Transmission GPRS, EDGE, HSDPA, HSUPA, HSPA+, LTE, FDD-LTE, TDD-LTE GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE
2G Band 850 GSM, 900 GSM, 1800 GSM, 1900 GSM 850 GSM, 900 GSM, 1800 GSM, 1900 GSM
3G UMTS Band Band 1, Band 2, Band 4, Band 5, Band 8 Band 1, Band 2, Band 5, Band 8
3G UMTS Frequency 2100, 1900, 1700, 850, 900 2100, 1900, 850, 900
4G LTE Band Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 17, Band 20, Band 38, Band 40 Band 1, Band 3, Band 5, Band 7, Band 8, Band 20, Band 40
4G LTE Frequency FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 700b, FDD 800 DD, TDD 2600, TDD 2300 FDD 2100, FDD 1800+, FDD 850, FDD 2600, FDD 900, FDD 800 DD, TDD 2300
Wireless Interface IEEE 802.11b/g/n IEEE 802.11a/b/g/n/ac, ANT+/ANT
Bluetooth Bluetooth 4.2 Bluetooth 4.1
Bluetooth Profiles HFP, HSP, OPP, PAN, A2DP, AVRCP, HID, PBAP, MAP, DIP, HOGP HFP, HSP, OPP, PAN, A2DP, AVRCP, HID, PBAP, MAP, HOGP
NFC - Yes Samsung Galaxy J7 (2017) DUOS has NFC reader for mobile payments.
Messaging Services SMS, MMS SMS, MMS
MEDIA Samsung Galaxy J3 (2017) DUOS Samsung Galaxy J7 (2017) DUOS
Supported Digital Audio Standards WMA, MP3, FLAC, OGG, MP4 WAV, WMA, AAC, AMR, MP3, FLAC, XMF, OGG, MIDI, M4A, MXMF, OGA, 3GA, AWB, IMY, RTTTL, RTX, OTA, MID
Supported Digital Video Standards VC-1, MPEG-4, H.264, H.263, MP43, VP8, VP9, H.265, WMV7 MKV, FLV, AVI, MPEG-4, WMV, ASF, 3GP, M4V, WebM, 3G2
FEATURES Samsung Galaxy J3 (2017) DUOS Samsung Galaxy J7 (2017) DUOS
Phone Functions Speakerphone, call timer, conference call, flight mode, vibrating alert Speakerphone, call timer, conference call, flight mode, vibrating alert
Sensors Accelerometer, proximity sensor Accelerometer, proximity sensor, gyro sensor, hall sensor, RGB sensor, geomagnetic sensor
Security Devices - Fingerprint reader
Additional Phone Features Dual Messenger -
OTHERS Samsung Galaxy J3 (2017) DUOS Samsung Galaxy J7 (2017) DUOS
Included Accessories Power adapter Power adapter
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