Asus Zenfone Zoom (ZX551ML 128GB) vs Samsung Galaxy J7 Duo (SM-J720F/DS 32GB/4GB)

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Side by side comparison between Asus Zenfone Zoom (ZX551ML) vs Samsung Galaxy J7 Duo phones, differences, pros, cons and full specifications. What's the better?

10/28/2018 10:37 PM, updated: 6/13/2022 6:34 PM

Compare Samsung Galaxy J7 Duo X Asus Zenfone Zoom (ZX551ML 128GB) 11Points

Specifications Compare Models Pictures

5.5"
IPS

1080x1920

13
MP

5mp

4GB
RAM

Quad-core

3000
mAh

(Non removable)

18Points Samsung Galaxy J7 Duo (SM-J720F/DS 32GB/4GB) Compare Asus Zenfone Zoom (ZX551ML) X

Specifications Compare Models Pictures

5.5"
AMOLED

720x1280

13
MP

8mp

4GB
RAM

Octa-core

3000
mAh

(Removable)

What's the better phone? Samsung Galaxy J7 Duo (SM-J720F/DS 32GB/4GB)

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!

11 Advantages Asus Zenfone Zoom (ZX551ML 128GB)	vs	18 Advantages Samsung Galaxy J7 Duo (SM-J720F/DS 32GB/4GB)
+2.5GHz 64bit Quad-core4% More powerful processor, you can open your applications faster	vs	2.2GHz 64bit Octa-core (14nm)
+128GB (122GB available)5 times More internal storage for applications and files	vs	32GB (21GB available)
+Aluminum frame, glass front, leather backAdvantage More resistant material	vs	Plastic body, glass front
+1080x1920 pixels125% Higher resolution screen	vs	720x1280 pixels
+401 PPI50% Crisper display of text, images and videos because it has more pixels per inch (ppi)	vs	267 PPI
+Digital and optical zoomAdvantage The zoom allows for better focus and approach to take pictures	vs	Only digital zoom
+OIS: Optical stabilizationAdvantage Image stabilization prevents blurry photos and helps in recording motion video	vs	EIS: Digital stabilization
+Ambient light sensorAdvantage Sensors help you use the device	vs	Not supported
+CompassAdvantage Sensors help you use the device	vs	Not supported
+GyroscopeAdvantage Sensors help you use the device	vs	Not supported
+NFCAdvantage NFC allows you to make payments by approach quickly and securely	vs	Not supported
4GB LPDDR3	vs	+4GB LPDDR4Advantage This RAM type is better and more efficient.
Until 128GB microSD, microSDXC	vs	+Until 256GB microSD, microSDXC100% More external storage for files using memory cards
185 grams (6.48 ounces)	vs	+174 grams (6.09 ounces)6% Lighter
12 millimeters (0.47 inches)	vs	+8.2 millimeters (0.32 inches)46% Thinner
TFT IPS LCD	vs	+Super AMOLEDAdvantage Super AMOLED display is brighter and more vivid
(back) 13MP	vs	+(dual camera) 13MP + 5MP39% Higher resolution main camera
Dual-LED flash	vs	+LED flash on both camerasAdvantage The LED flash on both cameras helps in dark places or in low light
f/2.7 (aperture)	vs	+f/1.9 (aperture)42% Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.
(front) 5MP	vs	+(front) 8MP63% Higher resolution secondary camera to take pictures and selfies
(front) HD (1280x720)	vs	+(front) Full HD (1920x1080)125% More image quality for recording videos with the secondary camera
Android 6.0 Marshmallow	vs	+Android 10Advantage Android 10 is newer and safer
Not supported	vs	+ANT+Advantage Sensors help you use the device
Not supported	vs	+Face unlock 2DAdvantage Sensors help you use the device
Not supported	vs	+Fingerprint sensor (front-mounted)Advantage Sensors help you use the device
LiPo: li-ion polymer (Non removable)	vs	+Li-Ion: lithium-ion (Removable)Advantage Removable battery can be replaced easily
1 slot (Single-SIM) (dedicated slot)	vs	+2 slots (Dual-SIM) (dedicated slot)Advantage You can have more mobile carriers/operators on the same device.
Not supported	vs	+FMAdvantage The radio lets you listen to your songs and sports in general
4.0 + A2DP	vs	+5.0 + A2DP/LEAdvantage Bluetooth 5.0 + A2DP/LE is newer and faster

21 Common items in both devices

16 million

5.5"

LDAF: laser detection autofocus / Autofocus

HDR photo only main camera

Full HD (1920x1080)

4G LTE

150 Mbps

+14 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
	Asus Zenfone Zoom (ZX551ML 128GB)	Galaxy J7 Duo (SM-J720F/DS 32GB/4GB)
Change model		Choose the model
Model	Zenfone Zoom (ZX551ML 128GB)	Galaxy J7 Duo (SM-J720F/DS 32GB/4GB)
Other model names	Asus Zenfone Zoom ZX551ML (4G), Asus ZX551ML	Galaxy J7 Duo (32GB + 4GB RAM) Dual-Sim, Samsung J720
Country or region available	(Latin America), (Europe)	India
Brand	Asus	Samsung
Release date	12/1/2015	4/1/2018
Depth	12 millimeters (0.47 inches)	8.2 millimeters (0.32 inches)
Size (width x height)	78.8 x 158.9 millimeters (3.1 x 6.26 in)	77.2 x 153.5 millimeters (3.04 x 6.04 in)
Weight	185 grams (6.48 ounces)	174 grams (6.09 ounces)
Build, materials	Aluminum frame, glass front, leather back	Plastic body, glass front
Protection against water and others	Not supported	Not supported
📲 Display
	Asus Zenfone Zoom (ZX551ML 128GB)	Galaxy J7 Duo (SM-J720F/DS 32GB/4GB)
Display type	TFT IPS LCD	Super AMOLED
Screen size	5.5" inches	5.5" inches
Screen-to-body ratio	~66.6% (screen-to-body ratio)	~70.4% (screen-to-body ratio)
Display resolution	1080x1920 pixels	720x1280 pixels (16:9)
Touchscreen	Capacitive Multitouch	Capacitive Multitouch
Pixel density (dot pitch)	401 PPI	267 PPI
Colors	16 million	16 million
Scratch-resistant glass	Gorilla Glass 4	Gorilla Glass
Refresh rate	feature not registered	60Hz
Display features	feature not registered	Not supported
🤖 Operating System
	Asus Zenfone Zoom (ZX551ML 128GB)	Galaxy J7 Duo (SM-J720F/DS 32GB/4GB)
System version	Android 5.0.2 Lollipop	Android 8.0 Oreo
Firmware update	Android 6.0 Marshmallow	Android 10
User Interface	feature not registered	One UI 2.0
⚙️ Processor
	Asus Zenfone Zoom (ZX551ML 128GB)	Galaxy J7 Duo (SM-J720F/DS 32GB/4GB)
Chipset	64bit: Intel Atom Z3590 (22nm)	64bit: Samsung Exynos 7885 (14nm)
CPU	Quad-core, 1 processor: 4x 2.5GHz Intel Silvermont (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	PowerVR G6430 MP4	ARM Mali-G71 MP2
Performance (benchmark)	feature not registered	AnTuTu: 98104 (v7)
💽 Memory and storage
	Asus Zenfone Zoom (ZX551ML 128GB)	Galaxy J7 Duo (SM-J720F/DS 32GB/4GB)
RAM memory	4GB LPDDR3	4GB LPDDR4
Internal storage	128GB (122GB available)	32GB (21GB available) eMMC 5.1
External storage	Until 128GB microSD, microSDXC (dedicated slot)	Until 256GB microSD, microSDXC (dedicated slot)
📶 Mobile networks
	Asus Zenfone Zoom (ZX551ML 128GB)	Galaxy J7 Duo (SM-J720F/DS 32GB/4GB)
Dual-SIM	Not supported	Dual-SIM Standby - Call active on one sim card (dedicated slot)
SIM card	1 slot (Single-SIM) micro-SIM (3FF)	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	GSM 850/900/1800/1900	GSM 850/900/1800/1900
Primary 3G network	UMTS 850/900/1900/2100	UMTS 850/900/1900/2100
Primary 4G network	LTE Cat4 (Bands 1, 2, 3, 5, 7, 8, 9, 18, 19, 28)	LTE Cat4 (1, 3, 5, 7, 8, 20) TD-LTE (38, 40, 41)
Primary 5G network	Not supported	Not supported
Primary data network	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE
Secondary 2G network	Not supported	GSM 850/900/1800/1900
Secondary 3G network	Not supported	UMTS 850/900/1900/2100
Secondary 4G network	Not supported	Not supported
Secondary data network	Not supported	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+
📷 Camera
	Asus Zenfone Zoom (ZX551ML 128GB)	Galaxy J7 Duo (SM-J720F/DS 32GB/4GB)
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	Dual-LED flash	LED flash on both cameras
Focal aperture	f/2.7 (aperture)	f/1.9 (aperture)
Focal length	28mm (lens)	feature not registered
Sensor size	feature not registered	feature not registered
Pixel size	feature not registered	feature not registered
Autofocus	LDAF: laser detection autofocus	Autofocus
Touch focus	Supported	Supported
Image stabilization	OIS: Optical stabilization	EIS: Digital stabilization
Zoom	Digital and optical 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
	Asus Zenfone Zoom (ZX551ML 128GB)	Galaxy J7 Duo (SM-J720F/DS 32GB/4GB)
Front camera (secondary)	5 megapixels	8 megapixels
Front camera resolution	2560x1920 pixels	3264x2448 pixels
Video recording (secondary)	HD (1280x720)	Full HD (1920x1080)
Front flash	Not supported	LED
Focal aperture	f/2.0 (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
	Asus Zenfone Zoom (ZX551ML 128GB)	Galaxy J7 Duo (SM-J720F/DS 32GB/4GB)
Loudspeaker	Supported	Mono sound (not stereo)
Active noise cancellation	Not supported	Not supported
Radio	Not supported	FM
TV	Not supported	Not supported
Video formats	MP4, H.264, H.263	MP4, H.264, H.263, XviD, MKV
Audio formats	MP3, WAV, eAAC+	MP3, WAV, WMA, eAAC+, FLAC
🔌 Connectivity
	Asus Zenfone Zoom (ZX551ML 128GB)	Galaxy J7 Duo (SM-J720F/DS 32GB/4GB)
USB	MicroUSB 2.0, USB OTG On-The-Go	MicroUSB 2.0
Audio output	3.5mm jack	3.5mm jack
TV output	Not supported	Not supported
Bluetooth	4.0 + A2DP	5.0 + A2DP/LE
WiFi	802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) 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
	Asus Zenfone Zoom (ZX551ML 128GB)	Galaxy J7 Duo (SM-J720F/DS 32GB/4GB)
Sensors	Accelerometer Ambient light sensor Compass Gyroscope Proximity sensor	Accelerometer ANT+ Face unlock 2D Fingerprint sensor (front-mounted) Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Asus Zenfone Zoom (ZX551ML 128GB)	Galaxy J7 Duo (SM-J720F/DS 32GB/4GB)
Battery type	LiPo: li-ion polymer (Non removable)	Li-Ion: lithium-ion (Removable)
Battery capacity	3000 mAh	3000 mAh
Charger, watts	18W Wired fast charging	Wired charging
Inductive / wireless charging	feature not registered	Not supported
Talk time autonomy	feature not registered	20 hours
Standby	feature not registered	feature not registered
➕ Other features
	Asus Zenfone Zoom (ZX551ML 128GB)	Galaxy J7 Duo (SM-J720F/DS 32GB/4GB)
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, White • Asus ZenUI • Hoya camera sensor • Laser autofocus camera (0.03 seconds) • 3x optical zoom camera • Dual tone flash • Fast battery charging: 60% in 40min • Beidou GPS • 5GB Asus Webstorage	• Colors: Black, Gold, Rose Gold, White • Samsung Pay
☢️ Radiation rate
	Asus Zenfone Zoom (ZX551ML 128GB)	Galaxy J7 Duo (SM-J720F/DS 32GB/4GB)
SAR 1.6W/kg (USA, Mexico, etc.)	feature not registered	feature not registered
SAR 2W/kg (Europe, UK, etc.)	feature not registered	0.543W/kg (head), 1.397W/kg (body)