Samsung Galaxy J7 Duo (SM-J720M) vs LG K40S (X430BMW)

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Side by side comparison between Samsung Galaxy J7 Duo vs LG K40S phones, differences, pros, cons and full specifications. What's the better?

3/14/2020 1:49 PM, updated: 6/13/2022 6:34 PM

Compare LG K40S X Samsung Galaxy J7 Duo (SM-J720M) 11Points

Specifications Compare Models Pictures

5.5"
AMOLED

720x1280

13
MP

8mp

3GB
RAM

Octa-core

3000
mAh

(Removable)

13Points LG K40S (X430BMW) Compare Samsung Galaxy J7 Duo X

Specifications Compare Models Pictures

6.1"
IPS

720x1520

13
MP

13mp

3GB
RAM

Octa-core

3500
mAh

(Non removable)

What's the better phone? LG K40S (X430BMW)

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 Samsung Galaxy J7 Duo (SM-J720M)	vs	13 Advantages LG K40S (X430BMW)
+3GB LPDDR4Advantage This RAM type is better and more efficient.	vs	3GB LPDDR3
+32GB (21GB available)17% More internal storage for applications and files	vs	32GB (18GB available)
+174 grams (6.09 ounces)7% Lighter	vs	186 grams (6.51 ounces)
+8.2 millimeters (0.32 inches)5% Thinner	vs	8.6 millimeters (0.34 inches)
+Super AMOLEDAdvantage Super AMOLED display is brighter and more vivid	vs	TFT IPS LCD
+LED flash on both camerasAdvantage The LED flash on both cameras helps in dark places or in low light	vs	LED flash
+f/1.9 (aperture)5% Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.	vs	f/2.0 (aperture)
+Android 10Advantage Android 10 is newer and safer	vs	Android 9.0 Pie
+ANT+Advantage Sensors help you use the device	vs	Not supported
+Li-Ion: lithium-ion (Removable)Advantage Removable battery can be replaced easily	vs	LiPo: li-ion polymer (Non removable)
+802.11 a/b/g/n/ac [wifi5]Advantage WiFi 802.11 a/b/g/n/ac [wifi5] is newer and faster	vs	802.11 b/g/n [wifi4]
2.2GHz 64bit Octa-core (14nm)	vs	+2GHz 64bit Octa-core (12nm)8% More powerful processor, you can open your applications faster
Until 256GB microSD, microSDXC	vs	+Until 1TB microSD, microSDXC3 times More external storage for files using memory cards
720x1280 pixels	vs	+720x1520 pixels19% Higher resolution screen
267 PPI	vs	+276 PPI3% Crisper display of text, images and videos because it has more pixels per inch (ppi)
5.5"	vs	+6.1"11% Larger screen
HDR photo only main camera	vs	+HDR photo on both camerasAdvantage The HDR technology produced photos with more detail in dark areas
(front) 8MP	vs	+(front) 13MP60% Higher resolution secondary camera to take pictures and selfies
(4G LTE) 150 Mbps	vs	+(4G LTE-A) 300 Mbps100% Faster for surfing the internet and download files
Not supported	vs	+Ambient light sensorAdvantage Sensors help you use the device
3000 mAh	vs	+3500 mAh17% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
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	+Active noise cancellationAdvantage More noise-canceling microphones allow for better quality in calls and audio for recorded videos
Not supported	vs	+MIL-STD-810G military certifiedAdvantage Protection against water allows you talk to your friends in the rain, for example

26 Common items in both devices

eMMC 5.1

Plastic body, glass front

60Hz

16 million

(dual camera) 13MP + 5MP

Only digital zoom

Autofocus / PDAF: phase detection autofocus

+19 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 J7 Duo (SM-J720M)	LG K40S (X430BMW)
Change model		Choose the model
Model	Galaxy J7 Duo (SM-J720M)	K40S (X430BMW)
Other model names	Galaxy J7 Duo J720M Single-Sim, Samsung J720	LG K40s LM-X430BMW, LMX430BMW (3GB RAM)
Country or region available	(Latin America)	Brazil
Brand	Samsung	LG
Release date	4/1/2018	9/1/2019
Depth	8.2 millimeters (0.32 inches)	8.6 millimeters (0.34 inches)
Size (width x height)	77.2 x 153.5 millimeters (3.04 x 6.04 in)	73.9 x 156.3 millimeters (2.91 x 6.15 in)
Weight	174 grams (6.09 ounces)	186 grams (6.51 ounces)
Build, materials	Plastic body, glass front	Plastic body, glass front
Protection against water and others	Not supported	MIL-STD-810G military certified: salt, dust, humidity, rain, vibration, solar radiation, transport and thermal shock resistant.
📲 Display
	Galaxy J7 Duo (SM-J720M)	LG K40S (X430BMW)
Display type	Super AMOLED	TFT IPS LCD
Screen size	5.5" inches	6.1" inches
Screen-to-body ratio	~70.4% (screen-to-body ratio)	~80.4% (screen-to-body ratio)
Display resolution	720x1280 pixels (16:9)	720x1520 pixels (19:9)
Touchscreen	Capacitive Multitouch	Capacitive Multitouch
Pixel density (dot pitch)	267 PPI	276 PPI
Colors	16 million	16 million
Scratch-resistant glass	Not supported	Not supported
Refresh rate	60Hz	60Hz
Display features	Not supported	Not supported
🤖 Operating System
	Galaxy J7 Duo (SM-J720M)	LG K40S (X430BMW)
System version	Android 8.0 Oreo	Android 9.0 Pie
Firmware update	Android 10	feature not registered
User Interface	One UI 2.0	feature not registered
⚙️ Processor
	Galaxy J7 Duo (SM-J720M)	LG K40S (X430BMW)
Chipset	64bit: Samsung Exynos 7885 (14nm)	64bit: MediaTek Helio P22 (MT6762) (12nm)
CPU	Octa-core, 2 processors: 2x 2.2GHz ARM Cortex-A73 (Dual-core) 6x 1.6GHz ARM Cortex-A53 (Hexa-core)	Octa-core, 2 processors: 4x 2GHz ARM Cortex-A53 (Quad-core) 4x 1.5GHz ARM Cortex-A53 (Quad-core)
GPU graphical controller	ARM Mali-G71 MP2	PowerVR GE8320 (650MHz)
Performance (benchmark)	AnTuTu: 98104 (v7)	feature not registered
💽 Memory and storage
	Galaxy J7 Duo (SM-J720M)	LG K40S (X430BMW)
RAM memory	3GB LPDDR4	3GB LPDDR3
Internal storage	32GB (21GB available) eMMC 5.1	32GB (18GB available) eMMC 5.1
External storage	Until 256GB microSD, microSDXC (dedicated slot)	Until 1TB microSD, microSDXC (dedicated slot)
📶 Mobile networks
	Galaxy J7 Duo (SM-J720M)	LG K40S (X430BMW)
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) nano-SIM (4FF)
Maximum Download / Upload	150/50 Mbps	300/50 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 850/900/1700/1900/2100	UMTS 850/900/1900/2100
Primary 4G network	LTE Cat4 (1, 3, 4, 5, 7, 8, 12, 13, 17, 28, 66) TD-LTE (38, 40, 41)	LTE Cat6 (Bands 1, 2, 3, 5, 7, 8, 28)
Primary 5G network	Not supported	Not supported
Primary data network	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE, LTE-A
Secondary 2G network	Not supported	GSM 850/900/1800/1900
Secondary 3G network	Not supported	Not supported
Secondary 4G network	Not supported	Not supported
Secondary data network	Not supported	GPRS, EDGE
📷 Camera
	Galaxy J7 Duo (SM-J720M)	LG K40S (X430BMW)
Back camera (main camera)	(dual camera) 13 megapixels 5MP depth f/1.9	(dual camera) 13 megapixels 5MP ultrawide f/2.21.12μm117°
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
Focal aperture	f/1.9 (aperture)	f/2.0 (aperture)
Focal length	feature not registered	26mm (lens)
Sensor size	feature not registered	feature not registered
Pixel size	feature not registered	1.12µm pixel
Autofocus	Autofocus	PDAF: phase detection 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 on both cameras
Camera extras	feature not registered	feature not registered
📸 Front camera
	Galaxy J7 Duo (SM-J720M)	LG K40S (X430BMW)
Front camera (secondary)	8 megapixels	13 megapixels
Front camera resolution	3264x2448 pixels	4128x3096 pixels
Video recording (secondary)	Full HD (1920x1080)	Full HD (1920x1080)
Front flash	LED	Not supported
Focal aperture	f/1.9 (aperture)	f/2.0 (aperture)
Focal length	feature not registered	feature not registered
Sensor size	feature not registered	feature not registered
Pixel size	feature not registered	1.12µm pixel
🔉 Sound and multimedia
	Galaxy J7 Duo (SM-J720M)	LG K40S (X430BMW)
Loudspeaker	Mono sound (not stereo)	Supported
Active noise cancellation	Not supported	2 microphones or more
Radio	FM	FM
TV	Not supported	Not supported
Video formats	MP4, H.264, H.263, XviD, MKV	MP4, H.264, H.263, XviD, MKV
Audio formats	MP3, WAV, WMA, eAAC+, FLAC	MP3, WAV, WMA, eAAC+, FLAC
🔌 Connectivity
	Galaxy J7 Duo (SM-J720M)	LG K40S (X430BMW)
USB	MicroUSB 2.0	MicroUSB 2.0, USB OTG On-The-Go
Audio output	3.5mm jack	3.5mm jack
TV output	Not supported	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 b/g/n [wifi4] (2.4GHz) WiFi Direct, hotspot
DLNA	Not supported	Not supported
GPS	A-GPS, GeoTagging, GLONASS, BeiDou	A-GPS, GeoTagging, GLONASS
NFC	Not supported	Not supported
Infrared port	Not supported	Not supported
🧭 Sensors
	Galaxy J7 Duo (SM-J720M)	LG K40S (X430BMW)
Sensors	Accelerometer ANT+ Face unlock Fingerprint sensor (front-mounted) Proximity sensor	Accelerometer Ambient light sensor Face unlock Fingerprint sensor (rear-mounted) Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Galaxy J7 Duo (SM-J720M)	LG K40S (X430BMW)
Battery type	Li-Ion: lithium-ion (Removable)	LiPo: li-ion polymer (Non removable)
Battery capacity	3000 mAh	3500 mAh
Charger, watts	Wired charging	6W (5V/1.2A) Wired charging
Inductive / wireless charging	Not supported	feature not registered
Talk time autonomy	20 hours	16 hours
Standby	feature not registered	432 hours (18 days)
➕ Other features
	Galaxy J7 Duo (SM-J720M)	LG K40S (X430BMW)
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, Gold, Rose Gold, White • Samsung Pay	• Colors: Aurora Black, Moroccan Blue • DTS:X 3D sound surround • Eco Playback
☢️ Radiation rate
	Galaxy J7 Duo (SM-J720M)	LG K40S (X430BMW)
SAR 1.6W/kg (USA, Mexico, etc.)	0.97W/kg (head), 0.55W/kg (body)	feature not registered
SAR 2W/kg (Europe, UK, etc.)	feature not registered	feature not registered

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Samsung Galaxy J7 Duo (SM-J720M) vs LG K40S (X430BMW)

Side by side comparison between Samsung Galaxy J7 Duo vs LG K40S phones, differences, pros, cons and full specifications. What's the better?

What's the better phone? LG K40S (X430BMW)

📱 Model features

📲 Display

🤖 Operating System

⚙️ Processor

💽 Memory and storage

📶 Mobile networks

📷 Camera

📸 Front camera

🔉 Sound and multimedia

🔌 Connectivity

🧭 Sensors

🔋 Battery

➕ Other features

☢️ Radiation rate