Samsung Galaxy J3 2017 (SM-J3300) vs Samsung Galaxy J7 Duo (SM-J720M/DS)

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Side by side comparison between Samsung Galaxy J3 (2017) vs Samsung Galaxy J7 Duo phones, differences, pros, cons and full specifications. What's the better?

10/28/2018 10:53 PM, updated: 6/13/2022 6:34 PM

Compare Samsung Galaxy J7 Duo X Samsung Galaxy J3 2017 (SM-J3300) 03Points

Specifications Compare Models Pictures

5"
PLS

720x1280

13
MP

5mp

3GB
RAM

Quad-core

2400
mAh

(Non removable)

14Points Samsung Galaxy J7 Duo (SM-J720M/DS) Compare Samsung Galaxy J3 (2017) X

Specifications Compare Models Pictures

5.5"
AMOLED

720x1280

13
MP

8mp

3GB
RAM

Octa-core

3000
mAh

(Removable)

What's the better phone? Samsung Galaxy J7 Duo (SM-J720M/DS)

The phonemore's choice is much more technical than personal. Therefore, you shouldn't only consider this. Our goal is to help you, but what's important to us may not be important to you. You decide which one is the best! Comment!

3 Advantages Samsung Galaxy J3 2017 (SM-J3300)	vs	14 Advantages Samsung Galaxy J7 Duo (SM-J720M/DS)
+142 grams (4.97 ounces)23% Lighter	vs	174 grams (6.09 ounces)
+294 PPI10% Crisper display of text, images and videos because it has more pixels per inch (ppi)	vs	267 PPI
+NFCAdvantage NFC allows you to make payments by approach quickly and securely	vs	Not supported
1.4GHz 64bit Quad-core (14nm)	vs	+2.2GHz 64bit Octa-core (14nm)75% More powerful processor, you can open your applications faster
3GB LPDDR3	vs	+3GB LPDDR4Advantage This RAM type is better and more efficient.
TFT PLS	vs	+Super AMOLEDAdvantage Super AMOLED display is brighter and more vivid
5"	vs	+5.5"10% Larger screen
(back) 13MP	vs	+(dual camera) 13MP + 5MP39% Higher resolution main camera
(front) 5MP	vs	+(front) 8MP63% Higher resolution secondary camera to take pictures and selfies
Android 9.0 Pie	vs	+Android 10Advantage Android 10 is newer and safer
Not supported	vs	+ANT+Advantage Sensors help you use the device
Not supported	vs	+Face unlockAdvantage Sensors help you use the device
Not supported	vs	+Fingerprint sensor (front-mounted)Advantage Sensors help you use the device
2400 mAh	vs	+3000 mAh25% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
Li-Ion: lithium-ion (Non removable)	vs	+Li-Ion: lithium-ion (Removable)Advantage Removable battery can be replaced easily
802.11 b/g/n [wifi4]	vs	+802.11 a/b/g/n/ac [wifi5]Advantage WiFi 802.11 a/b/g/n/ac [wifi5] is newer and faster
4.2 + A2DP	vs	+5.0 + A2DP/LEAdvantage Bluetooth 5.0 + A2DP/LE is newer and faster

25 Common items in both devices

32GB (23GB available) / 32GB (21GB available)

Until 256GB microSD, microSDXC

8.2 millimeters (0.32 inches)

16 million

720x1280 pixels

LED flash on both cameras

Only digital zoom

+18 specs and more in the table below

Check the comparison table below for more items that are not evaluated in comparison score above.

Highlight differences

📱 Model features
	Galaxy J3 2017 (SM-J3300)	Galaxy J7 Duo (SM-J720M/DS)
Change model		Choose the model
Model	Galaxy J3 2017 (SM-J3300)	Galaxy J7 Duo (SM-J720M/DS)
Other model names	盖乐世 J3 2017 32GB, Galaxy J3 SM-J3300ZKDCHC	Galaxy J7 Duo J720M/Dual-Sim, Samsung J720
Country or region available	China	(Latin America), Brazil
Brand	Samsung	Samsung
Release date	7/1/2017	4/1/2018
Depth	8.2 millimeters (0.32 inches)	8.2 millimeters (0.32 inches)
Size (width x height)	70.3 x 143.2 millimeters (2.77 x 5.64 in)	77.2 x 153.5 millimeters (3.04 x 6.04 in)
Weight	142 grams (4.97 ounces)	174 grams (6.09 ounces)
Build, materials	feature not registered	Plastic body, glass front
Protection against water and others	Not supported	Not supported
📲 Display
	Galaxy J3 2017 (SM-J3300)	Galaxy J7 Duo (SM-J720M/DS)
Display type	TFT PLS	Super AMOLED
Screen size	5" inches	5.5" inches
Screen-to-body ratio	~68.5% (screen-to-body ratio)	~70.4% (screen-to-body ratio)
Display resolution	720x1280 pixels	720x1280 pixels (16:9)
Touchscreen	Capacitive Multitouch	Capacitive Multitouch
Pixel density (dot pitch)	294 PPI	267 PPI
Colors	16 million	16 million
Scratch-resistant glass	Not supported	Not supported
Refresh rate	feature not registered	60Hz
Display features	feature not registered	Not supported
🤖 Operating System
	Galaxy J3 2017 (SM-J3300)	Galaxy J7 Duo (SM-J720M/DS)
System version	Android 7.0 Nougat	Android 8.0 Oreo
Firmware update	Android 9.0 Pie	Android 10
User Interface	feature not registered	One UI 2.0
⚙️ Processor
	Galaxy J3 2017 (SM-J3300)	Galaxy J7 Duo (SM-J720M/DS)
Chipset	64bit: Samsung Exynos 7570 (14nm)	64bit: Samsung Exynos 7885 (14nm)
CPU	Quad-core, 1 processor: 4x 1.4GHz ARM Cortex-A53 (Quad-core)	Octa-core, 2 processors: 2x 2.2GHz ARM Cortex-A73 (Dual-core) 6x 1.6GHz ARM Cortex-A53 (Hexa-core)
GPU graphical controller	ARM Mali-T720 MP1 (830MHz)	ARM Mali-G71 MP2
Performance (benchmark)	feature not registered	AnTuTu: 98104 (v7)
💽 Memory and storage
	Galaxy J3 2017 (SM-J3300)	Galaxy J7 Duo (SM-J720M/DS)
RAM memory	3GB LPDDR3	3GB LPDDR4
Internal storage	32GB (23GB available)	32GB (21GB available) eMMC 5.1
External storage	Until 256GB microSD, microSDXC (dedicated slot)	Until 256GB microSD, microSDXC (dedicated slot)
📶 Mobile networks
	Galaxy J3 2017 (SM-J3300)	Galaxy J7 Duo (SM-J720M/DS)
Dual-SIM	Dual-SIM Standby - Call active on one sim card (dedicated slot)	Dual-SIM Standby - Call active on one sim card (dedicated slot)
SIM card	2 slots (Dual-SIM) nano-SIM (4FF)	2 slots (Dual-SIM) micro-SIM (3FF)
Maximum Download / Upload	150/50 Mbps	150/50 Mbps
Network technology	2G, 3G, 4G	2G, 3G, 4G
Frequency, bands	Expand band details Collapse details
GSM MHz band	Quad-Band 850/900/1800/1900	Quad-Band 850/900/1800/1900
Primary 2G network	CDMA 800, GSM 850/900/1800/1900	GSM 850/900/1800/1900
Primary 3G network	CDMA2000 1xEV-DO TD-SCDMA 1900/2000 UMTS 850/900/1900/2100	UMTS 850/900/1700/1900/2100
Primary 4G network	LTE Cat4 (Bands 1,3,5,7,8) TD-LTE (Bands 38,39,40,41)	LTE Cat4 (1, 3, 4, 5, 7, 8, 12, 13, 17, 28, 66) TD-LTE (38, 40, 41)
Primary 5G network	Not supported	Not supported
Primary data network	GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, TD-SCDMA, UMTS, TD-HSDPA, HSDPA, HSUPA, HSPA+, TD-LTE, LTE	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE
Secondary 2G network	GSM 850/900/1800/1900	GSM 850/900/1800/1900
Secondary 3G network	Not supported	UMTS 850/900/1700/1900/2100
Secondary 4G network	Not supported	Not supported
Secondary data network	GPRS, EDGE	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+
📷 Camera
	Galaxy J3 2017 (SM-J3300)	Galaxy J7 Duo (SM-J720M/DS)
Back camera (main camera)	13 megapixels	(dual camera) 13 megapixels 5MP depth f/1.9
Main camera resolution	4128x3096 pixels	4128x3096 pixels
Video recording (primary)	Full HD (1920x1080) 30 fps	Full HD (1920x1080) 30 fps
Flash	LED flash on both cameras	LED flash on both cameras
Focal aperture	f/1.9 (aperture)	f/1.9 (aperture)
Focal length	feature not registered	feature not registered
Sensor size	feature not registered	feature not registered
Pixel size	feature not registered	feature not registered
Autofocus	Autofocus	Autofocus
Touch focus	Supported	Supported
Image stabilization	EIS: Digital stabilization	EIS: Digital stabilization
Zoom	Only digital zoom	Only digital zoom
Face/smile detection	Face detection, Smile detection	Face detection, Smile detection
BSI sensor	Not supported	Not supported
HDR	HDR photo only main camera	HDR photo only main camera
Camera extras	feature not registered	feature not registered
📸 Front camera
	Galaxy J3 2017 (SM-J3300)	Galaxy J7 Duo (SM-J720M/DS)
Front camera (secondary)	5 megapixels	8 megapixels
Front camera resolution	2560x1920 pixels	3264x2448 pixels
Video recording (secondary)	Full HD (1920x1080)	Full HD (1920x1080)
Front flash	LED	LED
Focal aperture	f/2.2 (aperture)	f/1.9 (aperture)
Focal length	feature not registered	feature not registered
Sensor size	feature not registered	feature not registered
Pixel size	feature not registered	feature not registered
🔉 Sound and multimedia
	Galaxy J3 2017 (SM-J3300)	Galaxy J7 Duo (SM-J720M/DS)
Loudspeaker	Supported	Mono sound (not stereo)
Active noise cancellation	2 microphones or more	Not supported
Radio	FM (RDS)	FM
TV	Not supported	Not supported
Video formats	MP4, H.264, H.263, MKV, WMV	MP4, H.264, H.263, XviD, MKV
Audio formats	MP3, WAV, WMA, eAAC+, FLAC	MP3, WAV, WMA, eAAC+, FLAC
🔌 Connectivity
	Galaxy J3 2017 (SM-J3300)	Galaxy J7 Duo (SM-J720M/DS)
USB	MicroUSB 2.0	MicroUSB 2.0
Audio output	3.5mm jack	3.5mm jack
TV output	Not supported	Not supported
Bluetooth	4.2 + A2DP	5.0 + A2DP/LE
WiFi	802.11 b/g/n [wifi4] (2.4GHz) WiFi Direct, hotspot	802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot
DLNA	Not supported	Not supported
GPS	A-GPS, GeoTagging, GLONASS, BeiDou	A-GPS, GeoTagging, GLONASS, BeiDou
NFC	Supported	Not supported
Infrared port	Not supported	Not supported
🧭 Sensors
	Galaxy J3 2017 (SM-J3300)	Galaxy J7 Duo (SM-J720M/DS)
Sensors	Accelerometer Proximity sensor	Accelerometer ANT+ Face unlock Fingerprint sensor (front-mounted) Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Galaxy J3 2017 (SM-J3300)	Galaxy J7 Duo (SM-J720M/DS)
Battery type	Li-Ion: lithium-ion (Non removable)	Li-Ion: lithium-ion (Removable)
Battery capacity	2400 mAh	3000 mAh
Charger, watts	Wired charging	Wired charging
Inductive / wireless charging	feature not registered	Not supported
Talk time autonomy	15 hours	20 hours
Standby	feature not registered	feature not registered
➕ Other features
	Galaxy J3 2017 (SM-J3300)	Galaxy J7 Duo (SM-J720M/DS)
Call control	Voice dialing, Voice recorder	Voice dialing, Voice recorder
Messaging	SMS (T9), MMS, E-mail, Push mail	SMS (T9), MMS, E-mail, Push mail
Hands-free calling	Supported	Supported
Video calling	Supported	Supported
Ringtones	Polyphonic and customized	Polyphonic and customized
Web browser	HTML, XHTML, HTML5	HTML, XHTML, HTML5
Antenna	Internal antenna	Internal antenna
Qwerty physical keyboard	Not supported	Not supported
Miscellaneous	• Colors: Black, Blue, Gold, Pink • USB OTG On-The-Go • Aluminum body • 2.5D curved glass screen • Samsung Knox	• Colors: Black, Gold, Rose Gold, White • Samsung Pay
☢️ Radiation rate
	Galaxy J3 2017 (SM-J3300)	Galaxy J7 Duo (SM-J720M/DS)
SAR 1.6W/kg (USA, Mexico, etc.)	feature not registered	0.97W/kg (head), 0.55W/kg (body)
SAR 2W/kg (Europe, UK, etc.)	feature not registered	feature not registered