LG K51S (K510HM) vs Samsung Galaxy J7 Duo (SM-J720F/DS 32GB/3GB)

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Side by side comparison between LG K51S vs Samsung Galaxy J7 Duo phones, differences, pros, cons and full specifications. What's the better?

7/8/2020 11:14 PM, updated: 6/13/2022 6:34 PM

Compare Samsung Galaxy J7 Duo X LG K51S (K510HM) 16Points

Specifications Compare Models Pictures

6.55"
IPS

720x1600

32
MP

13mp

3GB
RAM

Octa-core

4000
mAh

(Non removable)

12Points Samsung Galaxy J7 Duo (SM-J720F/DS 32GB/3GB) Compare LG K51S X

Specifications Compare Models Pictures

5.5"
AMOLED

720x1280

13
MP

8mp

3GB
RAM

Octa-core

3000
mAh

(Removable)

What's the better phone? LG K51S (K510HM)

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!

16 Advantages LG K51S (K510HM)	vs	12 Advantages Samsung Galaxy J7 Duo (SM-J720F/DS 32GB/3GB)
+2.3GHz 64bit Octa-core (12nm)27% More powerful processor, you can open your applications faster	vs	2.2GHz 64bit Octa-core (14nm)
+64GB (47GB available)124% More internal storage for applications and files	vs	32GB (21GB available)
+Until 1TB microSD, microSDXC3 times More external storage for files using memory cards	vs	Until 256GB microSD, microSDXC
+720x1600 pixels25% Higher resolution screen	vs	720x1280 pixels
+268 PPI1% Crisper display of text, images and videos because it has more pixels per inch (ppi)	vs	267 PPI
+6.55"19% Larger screen	vs	5.5"
+(quad camera) 32MP + 5MP + 2MP + 2MP130% Higher resolution main camera	vs	(dual camera) 13MP + 5MP
+HDR photo on both camerasAdvantage The HDR technology produced photos with more detail in dark areas	vs	HDR photo only main camera
+f/1.8 (aperture)6% Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.	vs	f/1.9 (aperture)
+(front) 13MP60% Higher resolution secondary camera to take pictures and selfies	vs	(front) 8MP
+(4G LTE-A) 300 Mbps100% 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
+4000 mAh33% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use	vs	3000 mAh
+Type-CAdvantage Reversible connector, you can stick in a USB-C cable any which way; either side is up.	vs	MicroUSB 2.0
+MIL-STD-810G military certifiedAdvantage Protection against water allows you talk to your friends in the rain, for example	vs	Not supported
3GB LPDDR3	vs	+3GB LPDDR4Advantage This RAM type is better and more efficient.
194 grams (6.79 ounces)	vs	+174 grams (6.09 ounces)11% Lighter
8.26 millimeters (0.33 inches)	vs	+8.2 millimeters (0.32 inches)1% Thinner
TFT IPS LCD	vs	+Super AMOLEDAdvantage Super AMOLED display is brighter and more vivid
LED flash	vs	+LED flash on both camerasAdvantage The LED flash on both cameras helps in dark places or in low light
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
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.
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
Not supported	vs	+Gorilla GlassAdvantage Protection against scratches on the screen lets you carry your phone with your keys

21 Common items in both devices

eMMC 5.1

Plastic body, glass front

60Hz

16 million

Only digital zoom

PDAF: phase detection autofocus / Autofocus

EIS: Digital stabilization

+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
	LG K51S (K510HM)	Galaxy J7 Duo (SM-J720F/DS 32GB/3GB)
Change model		Choose the model
Model	K51S (K510HM)	Galaxy J7 Duo (SM-J720F/DS 32GB/3GB)
Other model names	LG K51s LM-K510HM, LMK510HM (Single-Sim)	Galaxy J7 Duo (32GB + 3GB RAM) Dual-Sim, Samsung J720
Country or region available	(Latin America)	(Europe), (Global, International), Singapore, Thailand, Vietnam
Brand	LG	Samsung
Release date	4/1/2020	4/1/2018
Depth	8.26 millimeters (0.33 inches)	8.2 millimeters (0.32 inches)
Size (width x height)	76.7 x 165.2 millimeters (3.02 x 6.5 in)	77.2 x 153.5 millimeters (3.04 x 6.04 in)
Weight	194 grams (6.79 ounces)	174 grams (6.09 ounces)
Build, materials	Plastic body, glass front	Plastic body, glass front
Protection against water and others	MIL-STD-810G military certified: salt, dust, humidity, rain, vibration, solar radiation, transport and thermal shock resistant.	Not supported
📲 Display
	LG K51S (K510HM)	Galaxy J7 Duo (SM-J720F/DS 32GB/3GB)
Display type	TFT IPS LCD	Super AMOLED
Screen size	6.55" inches	5.5" inches
Screen-to-body ratio	~81.7% (screen-to-body ratio)	~70.4% (screen-to-body ratio)
Display resolution	720x1600 pixels (20:9)	720x1280 pixels (16:9)
Touchscreen	Capacitive Multitouch	Capacitive Multitouch
Pixel density (dot pitch)	268 PPI	267 PPI
Colors	16 million	16 million
Scratch-resistant glass	Not supported	Gorilla Glass
Refresh rate	60Hz	60Hz
Display features	400nits[typ]	Not supported
🤖 Operating System
	LG K51S (K510HM)	Galaxy J7 Duo (SM-J720F/DS 32GB/3GB)
System version	Android 9.0 Pie	Android 8.0 Oreo
Firmware update	feature not registered	Android 10
User Interface	feature not registered	One UI 2.0
⚙️ Processor
	LG K51S (K510HM)	Galaxy J7 Duo (SM-J720F/DS 32GB/3GB)
Chipset	64bit: MediaTek Helio P35 (MT6765) (12nm)	64bit: Samsung Exynos 7885 (14nm)
CPU	Octa-core, 2 processors: 4x 2.3GHz ARM Cortex-A53 (Quad-core) 4x 1.8GHz 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	PowerVR GE8320 MP2 (680MHz)	ARM Mali-G71 MP2
Performance (benchmark)	feature not registered	AnTuTu: 98104 (v7)
💽 Memory and storage
	LG K51S (K510HM)	Galaxy J7 Duo (SM-J720F/DS 32GB/3GB)
RAM memory	3GB LPDDR3	3GB LPDDR4
Internal storage	64GB (47GB available) eMMC 5.1	32GB (21GB available) eMMC 5.1
External storage	Until 1TB microSD, microSDXC (dedicated slot)	Until 256GB microSD, microSDXC (dedicated slot)
📶 Mobile networks
	LG K51S (K510HM)	Galaxy J7 Duo (SM-J720F/DS 32GB/3GB)
Dual-SIM	Not supported	Dual-SIM Standby - Call active on one sim card (dedicated slot)
SIM card	1 slot (Single-SIM) nano-SIM (4FF)	2 slots (Dual-SIM) micro-SIM (3FF)
Maximum Download / Upload	300/50 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 850/900/1700/1900/2100	UMTS 850/900/1900/2100
Primary 4G network	LTE Cat6 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 28, 66) TD-LTE (38)	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+, TD-LTE, LTE, LTE-A	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
	LG K51S (K510HM)	Galaxy J7 Duo (SM-J720F/DS 32GB/3GB)
Back camera (main camera)	(quad camera) 32 megapixels 5MP ultrawide f/2.216mm1.12μm115° 2MP macro f/2.422mm1.75μm88.6° 2MP depth f/2.41.75μm	(dual camera) 13 megapixels 5MP depth f/1.9
Main camera resolution	6528x4896 pixels	4128x3096 pixels
Video recording (primary)	Full HD (1920x1080) 30 fps	Full HD (1920x1080) 30 fps
Flash	LED flash	LED flash on both cameras
Focal aperture	f/1.8 (aperture)	f/1.9 (aperture)
Focal length	24mm lens	feature not registered
Sensor size	feature not registered	feature not registered
Pixel size	0.8µm pixel	feature not registered
Autofocus	PDAF: phase detection 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 on both cameras	HDR photo only main camera
Camera extras	feature not registered	feature not registered
📸 Front camera
	LG K51S (K510HM)	Galaxy J7 Duo (SM-J720F/DS 32GB/3GB)
Front camera (secondary)	13 megapixels	8 megapixels
Front camera resolution	4128x3096 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
	LG K51S (K510HM)	Galaxy J7 Duo (SM-J720F/DS 32GB/3GB)
Loudspeaker	Supported	Mono sound (not stereo)
Active noise cancellation	2 microphones or more	Not supported
Radio	FM	FM
TV	Not supported	Not supported
Video formats	MP4, H.265, 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
	LG K51S (K510HM)	Galaxy J7 Duo (SM-J720F/DS 32GB/3GB)
USB	USB 2.0 Type-C, USB OTG On-The-Go	MicroUSB 2.0
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 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	A-GPS, GeoTagging, GLONASS, BeiDou
NFC	Not supported	Not supported
Infrared port	Not supported	Not supported
🧭 Sensors
	LG K51S (K510HM)	Galaxy J7 Duo (SM-J720F/DS 32GB/3GB)
Sensors	Accelerometer Ambient light sensor Compass Fingerprint sensor (rear-mounted) Proximity sensor	Accelerometer ANT+ Face unlock Fingerprint sensor (front-mounted) Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	LG K51S (K510HM)	Galaxy J7 Duo (SM-J720F/DS 32GB/3GB)
Battery type	LiPo: li-ion polymer (Non removable)	Li-Ion: lithium-ion (Removable)
Battery capacity	4000 mAh	3000 mAh
Charger, watts	10W (5V/2A) Wired charging	Wired charging
Inductive / wireless charging	Not supported	Not supported
Talk time autonomy	10.5 hours	20 hours
Standby	370 hours (15.4 days)	feature not registered
➕ Other features
	LG K51S (K510HM)	Galaxy J7 Duo (SM-J720F/DS 32GB/3GB)
Call control	Voice dialing, Voice recorder, Voice commands	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: Titanium, Blue, Pink/Red • Silicone case included • Google Assistant (dedicated side button) • DTS:X 3D audio	• Colors: Black, Gold, Rose Gold, White • Samsung Pay
☢️ Radiation rate
	LG K51S (K510HM)	Galaxy J7 Duo (SM-J720F/DS 32GB/3GB)
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)