Oppo Find X (256GB) vs Samsung Galaxy J7 Duo (SM-J720M)

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Side by side comparison between Oppo Find X vs Samsung Galaxy J7 Duo phones, differences, pros, cons and full specifications. What's the better?

10/28/2018 10:56 PM, updated: 6/9/2025 11:20 PM

Compare Samsung Galaxy J7 Duo X Oppo Find X (256GB) 25Points

Specifications Compare Models Pictures

6.42"
AMOLED

1080x2340

16
MP

25mp

8GB
RAM

Octa-core

3730
mAh

(Non removable)

11Points Samsung Galaxy J7 Duo (SM-J720M) Compare Oppo Find X X

Specifications Compare Models Pictures

5.5"
AMOLED

720x1280

13
MP

8mp

3GB
RAM

Octa-core

3000
mAh

(Removable)

What's the better phone? Oppo Find X (256GB)

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!

25 Advantages Oppo Find X (256GB)	vs	11 Advantages Samsung Galaxy J7 Duo (SM-J720M)
+2.8GHz 64bit Octa-core (10nm)46% More powerful processor, you can open your applications faster	vs	2.2GHz 64bit Octa-core (14nm)
+8GB LPDDR4X167% More RAM memory. Typically more responsive and better for multitasking.	vs	3GB LPDDR4
+256GB (243GB available)11 times More internal storage for applications and files	vs	32GB (21GB available)
+UFS 2.1Advantage Fastest write and read storage.	vs	eMMC 5.1
+Aluminum frame, glass front/backAdvantage More resistant material	vs	Plastic body, glass front
+1080x2340 pixels174% 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
+6.42"17% Larger screen	vs	5.5"
+(dual camera) 16MP + 20MP102% Higher resolution main camera	vs	(dual camera) 13MP + 5MP
+OIS: Optical stabilizationAdvantage Image stabilization prevents blurry photos and helps in recording motion video	vs	EIS: Digital stabilization
+BSI sensorAdvantage The BSI sensor allows the entry of more light generating photos with more detail and brightness	vs	Not supported
+HDR photo on both camerasAdvantage The HDR technology produced photos with more detail in dark areas	vs	HDR photo only main camera
+(front) 25MP2 times Higher resolution secondary camera to take pictures and selfies	vs	(front) 8MP
+4K UHD (3840x2160)3 times More image quality for recording videos with the primary camera	vs	Full HD (1920x1080)
+(4G LTE-A) 1024 Mbps6 times Faster for surfing the internet and download files	vs	(4G LTE) 150 Mbps
+Ambient light sensorAdvantage Sensors help you use the device	vs	Not supported
+CompassAdvantage Sensors help you use the device	vs	Not supported
+Face unlock 3DAdvantage Sensors help you use the device	vs	Face unlock 2D
+GyroscopeAdvantage Sensors help you use the device	vs	Not supported
+3730 mAh24% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use	vs	3000 mAh
+2 slots (Dual-SIM)Advantage You can have more mobile carriers/operators on the same device.	vs	1 slot (Single-SIM) (dedicated slot)
+Active noise cancellationAdvantage More noise-canceling microphones allow for better quality in calls and audio for recorded videos	vs	Not supported
+NFCAdvantage NFC allows you to make payments by approach quickly and securely	vs	Not supported
+Type-CAdvantage Reversible connector, you can stick in a USB-C cable any which way; either side is up.	vs	MicroUSB 2.0
+Gorilla Glass 5Advantage Protection against scratches on the screen lets you carry your phone with your keys	vs	Not supported
Not supported	vs	+Until 256GB microSD, microSDXCAdvantage More external storage for files using memory cards
186 grams (6.51 ounces)	vs	+174 grams (6.09 ounces)7% Lighter
9.4 millimeters (0.37 inches)	vs	+8.2 millimeters (0.32 inches)15% Thinner
AMOLED	vs	+Super AMOLEDAdvantage Super AMOLED display is brighter and more vivid
Dual-LED flash	vs	+LED flash on both camerasAdvantage The LED flash on both cameras helps in dark places or in low light
f/2.0 (aperture)	vs	+f/1.9 (aperture)5% Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.
Not supported	vs	+ANT+Advantage 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
Type-C reversible connector	vs	+3.5mm jackAdvantage Headsets with 3.5mm Jack size are more common and easy to find in stores
Not supported	vs	+FMAdvantage The radio lets you listen to your songs and sports in general

20 Common items in both devices

60Hz

16 million

Only digital zoom

PDAF: phase detection autofocus / Autofocus

(front) Full HD (1920x1080)

Android 10

4G LTE-A / 4G LTE

+13 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
	Oppo Find X (256GB)	Galaxy J7 Duo (SM-J720M)
Change model		Choose the model
Model	Find X (256GB)	Galaxy J7 Duo (SM-J720M)
Other model names	BBK Oppo Find X PAFM00, PAFT00	Galaxy J7 Duo J720M Single-Sim, Samsung J720
Country or region available	(Global, International), China, Hong Kong	(Latin America)
Brand	Oppo	Samsung
Release date	7/1/2018	4/1/2018
Depth	9.4 millimeters (0.37 inches)	8.2 millimeters (0.32 inches)
Size (width x height)	74.2 x 156.7 millimeters (2.92 x 6.17 in)	77.2 x 153.5 millimeters (3.04 x 6.04 in)
Weight	186 grams (6.51 ounces)	174 grams (6.09 ounces)
Build, materials	Aluminum frame, glass front/back Back: Gorilla Glass 5	Plastic body, glass front
Protection against water and others	Not supported	Not supported
📲 Display
	Oppo Find X (256GB)	Galaxy J7 Duo (SM-J720M)
Display type	AMOLED	Super AMOLED
Screen size	6.42" inches	5.5" inches
Screen-to-body ratio	~87% (screen-to-body ratio)	~70.4% (screen-to-body ratio)
Display resolution	1080x2340 pixels (19.5:9)	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 5	Not supported
Refresh rate	60Hz	60Hz
Display features	Not supported	Not supported
🤖 Operating System
	Oppo Find X (256GB)	Galaxy J7 Duo (SM-J720M)
System version	Android 8.1 Oreo	Android 8.0 Oreo
Firmware update	Android 10	Android 10
User Interface	ColorOS 5.1 / 7.0	One UI 2.0
⚙️ Processor
	Oppo Find X (256GB)	Galaxy J7 Duo (SM-J720M)
Chipset	64bit: Qualcomm Snapdragon 845 (SDM845) (10nm)	64bit: Samsung Exynos 7885 (14nm)
CPU	Octa-core, 2 processors: 4x 2.8GHz Kryo 385 Gold (Quad-core) 4x 1.7GHz Kryo 385 Silver (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	Qualcomm Adreno 630 (710MHz)	ARM Mali-G71 MP2
Performance (benchmark)	feature not registered	AnTuTu: 98104 (v7)
💽 Memory and storage
	Oppo Find X (256GB)	Galaxy J7 Duo (SM-J720M)
RAM memory	8GB LPDDR4X	3GB LPDDR4
Internal storage	256GB (243GB available) UFS 2.1	32GB (21GB available) eMMC 5.1
External storage	Not supported	Until 256GB microSD, microSDXC (dedicated slot)
📶 Mobile networks
	Oppo Find X (256GB)	Galaxy J7 Duo (SM-J720M)
Dual-SIM	Dual-SIM Standby - Call active on one sim card	Not supported
SIM card	2 slots (Dual-SIM) nano-SIM (4FF)	1 slot (Single-SIM) micro-SIM (3FF)
Maximum Download / Upload	1024/150 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 850/900/1700/1900/2100	UMTS 850/900/1700/1900/2100
Primary 4G network	LTE Cat16 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 29, 32, 66) TD-LTE (34, 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, LTE-A	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE
Secondary 2G network	GSM 850/900/1800/1900	Not supported
Secondary 3G network	Not supported	Not supported
Secondary 4G network	Not supported	Not supported
Secondary data network	GPRS, EDGE	Not supported
📷 Camera
	Oppo Find X (256GB)	Galaxy J7 Duo (SM-J720M)
Back camera (main camera)	(dual camera) 16 megapixels 20MP f/2.01/2.8"1.0µm	(dual camera) 13 megapixels 5MP depth f/1.9
Main camera resolution	4608x3456 pixels	4128x3096 pixels
Video recording (primary)	4K UHD (3840x2160) 30 fps	Full HD (1920x1080) 30 fps
Flash	Dual-LED flash	LED flash on both cameras
Focal aperture	f/2.0 (aperture)	f/1.9 (aperture)
Focal length	feature not registered	feature not registered
Sensor size	1/2.6" inches	feature not registered
Pixel size	1.22µm pixel	feature not registered
Autofocus	PDAF: phase detection autofocus	Autofocus
Touch focus	Supported	Supported
Image stabilization	OIS: Optical stabilization	EIS: Digital stabilization
Zoom	Only digital zoom	Only digital zoom
Face/smile detection	Face detection, Smile detection	Face detection, Smile detection
BSI sensor	Supported	Not supported
HDR	HDR photo on both cameras	HDR photo only main camera
Camera extras	feature not registered	feature not registered
📸 Front camera
	Oppo Find X (256GB)	Galaxy J7 Duo (SM-J720M)
Front camera (secondary)	25 megapixels *Motorized pop-up camera (slider)	8 megapixels
Front camera resolution	5760x4320 pixels	3264x2448 pixels
Video recording (secondary)	Full HD (1920x1080)	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
	Oppo Find X (256GB)	Galaxy J7 Duo (SM-J720M)
Loudspeaker	Mono sound (not stereo)	Mono sound (not stereo)
Active noise cancellation	2 microphones	Not supported
Radio	Not supported	FM
TV	Not supported	Not supported
Video formats	MP4, H.265, H.264, H.263, DivX, XviD	MP4, H.264, H.263, XviD, MKV
Audio formats	MP3, OGG, eAAC+, FLAC	MP3, WAV, WMA, eAAC+, FLAC
🔌 Connectivity
	Oppo Find X (256GB)	Galaxy J7 Duo (SM-J720M)
USB	USB 2.0 Type-C, USB OTG On-The-Go	MicroUSB 2.0
Audio output	Type-C reversible connector	3.5mm jack
TV output	USB Type-C (reversible)	Not supported
Bluetooth	5.0 + A2DP/LE	5.0 + A2DP/LE
WiFi	802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO 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
	Oppo Find X (256GB)	Galaxy J7 Duo (SM-J720M)
Sensors	Accelerometer Ambient light sensor Compass Face unlock 3D Gyroscope Hall effect Proximity sensor	Accelerometer ANT+ Face unlock 2D Fingerprint sensor (front-mounted) Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Oppo Find X (256GB)	Galaxy J7 Duo (SM-J720M)
Battery type	LiPo: li-ion polymer (Non removable)	Li-Ion: lithium-ion (Removable)
Battery capacity	3730 mAh	3000 mAh
Charger, watts	50W Wired fast charging VOOC 3.0	Wired charging
Inductive / wireless charging	Not supported	Not supported
Talk time autonomy	feature not registered	20 hours
Standby	feature not registered	feature not registered
➕ Other features
	Oppo Find X (256GB)	Galaxy J7 Duo (SM-J720M)
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: Bordeaux Red, Glacier Blue	• Colors: Black, Gold, Rose Gold, White • Samsung Pay
☢️ Radiation rate
	Oppo Find X (256GB)	Galaxy J7 Duo (SM-J720M)
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