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Samsung Galaxy J4 (SM-J400M) vs LG K51S (K510EMW)

Side by side comparison between Samsung Galaxy J4 vs LG K51S phones, differences, pros, cons with full specifications. What's the better?

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Compare LG K51S XSamsung Galaxy J4 (SM-J400M)06Points
Samsung Galaxy J4 (SM-J400M)
5.5"
AMOLED

720x1280

13
MP

5mp

2GB
RAM

64bit Quad

3000
mAh

(Removable)

vs
LG K51S (K510EMW)
6.55"
IPS

720x1600

32
MP

13mp

3GB
RAM

64bit Octa

4000
mAh

(Non removable)

What's the better phone? LG K51S (K510EMW)

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!

Galaxy J4 (SM-J400M)6 Advantages Samsung Galaxy J4 (SM-J400M)vsK51S (K510EMW)25 Advantages LG K51S (K510EMW)
+175 grams (6.13 ounces)11%
Lighter
vs194 grams (6.79 ounces)
+8.1 millimeters (0.32 inches)2%
Thinner
vs8.26 millimeters (0.33 inches)
+Super AMOLEDAdvantage
Super AMOLED display is brighter and more vivid
vsTFT IPS LCD
+LED flash on both camerasAdvantage
The LED flash on both cameras helps in dark places or in low light
vsLED flash
+Li-Ion: Lithium-Ion (Removable)Advantage
Removable battery can be replaced easily
vsLiPo: Li-Ion polymer (Non removable)
+FMAdvantage
The radio lets you listen to your songs and sports in general
vsNot supported
1.4Ghz 64bit Quad-Corevs+2.3Ghz 64bit Octa-Core109%
More powerful processor, you can open your applications faster
2GB LPDDR3vs+3GB LPDDR350%
More RAM memory. Typically more responsive and better for multitasking.
32GB (22GB available)vs+64GB (47GB available)114%
More internal storage for applications and files
Flash (EEPROM)vs+eMMC 5.1Advantage
Fastest write and read storage.
Until 256GB microSD, microSDXCvs+Until 1TB microSD, microSDXC3 times
More external storage for files using memory cards
720x1280 pixelsvs+720x1600 pixels25%
Higher resolution screen
267 PPIvs+268 PPI1%
Crisper display of text, images and videos because it has more pixels per inch (ppi)
5.5"vs+6.55"19%
Larger screen
(back) 13MPvs+(quad camera) 32MP + 5MP + 2MP + 2MP2 times
Higher resolution main camera
HDR photo only main cameravs+HDR photo on both camerasAdvantage
The HDR technology produced photos with more detail in dark areas
f/1.9 (aperture)vs+f/1.8 (aperture)6%
Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.
(front) 5MPvs+(front) 13MP160%
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
(4G LTE) 150 Mbpsvs+(4G+ LTE-A) 300 Mbps100%
Faster for surfing the internet and download files
Not supportedvs+CompassAdvantage
Sensors help you use the device
Not supportedvs+Ambient Light sensorAdvantage
Sensors help you use the device
Not supportedvs+Fingerprint sensor (rear-mounted)Advantage
Sensors help you use the device
3000 mAhvs+4000 mAh33%
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
It's more advantageous to have more than one phone operator in the same device
Not supportedvs+Active noise cancellationAdvantage
Noise-canceling microphone allows better call quality
Not supportedvs+DLNAAdvantage
With DLNA technology you can access and play media files on TV, tablet or DLNA compatible device.
4.2 + A2DPvs+5.0 + A2DP/LEAdvantage
Bluetooth 5.0 + A2DP/LE is newer and faster
Not supportedvs+NFCAdvantage
NFC allows you to make payments by approach quickly and securely
MicroUSB 2.0, USB OTG On-The-Govs+Type-CAdvantage
Reversible connector, you can stick in a USB-C cable any which way; either side is up.
Not supportedvs+MIL-STD-810G military certifiedAdvantage
Protection against water allows you talk to your friends in the rain, for example

20 Common items in both devices
Plastic body / Plastic body, glass front
16 million
Only digital zoom
Autofocus / PDAF: phase detection autofocus
EIS: Digital stabilization
Full HD (1920x1080)
Android 9.0 Pie
+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 differencesClear highlight
Physical featuresSamsung Galaxy J4 (SM-J400M)LG K51S (K510EMW)
ModelGalaxy J4 (SM-J400M)K51S (K510EMW)
Other model namesGalaxy J4 J400M Single-sim, SM-J400MZKMTCELG K51s LM-K510EMW, LMK510EMW (Dual-Sim + NFC)
Country or region available(Latin America)
(Latin America)
(Europe)(Global, International)
(Europe), (Global, International)
BrandSamsungLG
Release dateMay, 2018April, 2020
Depth8.1 millimeters (0.32 inches)8.26 millimeters (0.33 inches)
Size (width x height)77.2 x 151.7 millimeters (3.04 x 5.97 in)76.7 x 165.2 millimeters (3.02 x 6.5 in)
Weight175 grams (6.13 ounces)194 grams (6.79 ounces)
Qwerty physical keyboardNot supportedNot supported
AntennaInternal antennaInternal antenna
Build, materialsPlastic bodyPlastic body, glass front
Protection against water and othersNot supportedMIL-STD-810G military certified: salt, dust, humidity, rain, vibration, solar radiation, transport and thermal shock resistant.
System (OS)Samsung Galaxy J4 (SM-J400M)LG K51S (K510EMW)
Operating systemAndroid 8.0 OreoAndroid 9.0 Pie
Firmware updateAndroid 9.0 Piefeature not registered
HardwareSamsung Galaxy J4 (SM-J400M)LG K51S (K510EMW)
Chipset64bit - Samsung Exynos 7 Quad 7570 (14nm)64bit - MediaTek MT6765 Helio P35 (12nm)
CPU processor1.4Ghz Quad-Core ARM Cortex-A53Octa-Core, 2 processors:
2.3Ghz Quad-Core ARM Cortex-A53
1.8Ghz Quad-Core ARM Cortex-A53
GPU graphical controllerARM Mali-T720 MP2PowerVR GE8320 680Mhz
RAM memory2GB LPDDR33GB LPDDR3
Internal storage32GB (22GB available)
Flash (EEPROM)
64GB (47GB available)
eMMC 5.1
External storageUntil 256GB microSD, microSDXC
(dedicated slot)
Until 1TB microSD, microSDXC
(dedicated slot)
DisplaySamsung Galaxy J4 (SM-J400M)LG K51S (K510EMW)
Display typeSuper AMOLEDTFT IPS LCD
Screen size5.5" inches6.55" inches
Screen-to-body ratio~71.2% (screen-to-body ratio)~81.7% (screen-to-body ratio)
Display resolution720x1280 pixels720x1600 pixels (20:9)
TouchscreenCapacitive MultitouchCapacitive Multitouch
Pixel density (dot pitch)267 PPI268 PPI
Colors16 million16 million
Scratch-resistant glassNot supportedNot supported
Display featuresfeature not registered60Hz, 400 nits
Mobile networksSamsung Galaxy J4 (SM-J400M)LG K51S (K510EMW)
Dual-SIMNot supportedDual-SIM Standby - Call active on one sim card
(dedicated slot)
SIM card1 slot (Single-SIM)
micro-SIM (3FF)
2 slots (Dual-SIM)
nano-SIM (4FF)
Maximum download/upload150/50 Mbps300/50 Mbps
Network technology2G, 3G, 4G2G, 3G, 4G
Frequency, bandsExpand band detailsCollapse details
GSM Mhz bandQuad-Band 850/900/1800/1900Quad-Band 850/900/1800/1900
Primary 2G networkGSM 850/900/1800/1900GSM 850/900/1800/1900
Primary 3G networkUMTS 850/900/1700/1900/2100UMTS 850/900/1900/2100
Primary 4G networkLTE Cat4 (Bands 1,2,3,4,5,7,8,12,13,17,28,66)LTE Cat6 (1, 3, 7, 8, 20)
TD-LTE (38)
Primary 5G networkNot supportedNot supported
Primary data networkGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTEGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A
Secondary 2G networkNot supportedGSM 850/900/1800/1900
Secondary 3G networkNot supportedNot supported
Secondary 4G networkNot supportedNot supported
Secondary data networkNot supportedGPRS, EDGE
CallingSamsung Galaxy J4 (SM-J400M)LG K51S (K510EMW)
MessagingSMS (T9), MMS, E-mail, Push mailSMS (T9), MMS, E-mail, Push mail
SpeakerphoneSupportedSupported
Video callingSupportedSupported
Call controlVoice dialing, Voice recorderVoice dialing, Voice recorder, Voice commands
CameraSamsung Galaxy J4 (SM-J400M)LG K51S (K510EMW)
Back camera (main camera)13 megapixels(quad camera)
32 megapixels
5MP ultrawidef/2.216mm1.12μm115º
2MP macrof/2.422mm1.75μm88.6º
2MP depthf/2.41.75μm
Main camera resolution4128x3096 pixels6528x4896 pixels
Video recording (primary)Full HD (1920x1080) 30 fpsFull HD (1920x1080) 30 fps
FlashLED flash on both camerasLED flash
Focal aperturef/1.9 (aperture)f/1.8 (aperture)
Focal length28mm lens24mm lens
Sensor sizefeature not registeredfeature not registered
Pixel sizefeature not registered0.8µm pixel
AutofocusAutofocusPDAF: phase detection autofocus
Touch focusSupportedSupported
Image stabilizationEIS: Digital stabilizationEIS: Digital stabilization
ZoomOnly digital zoomOnly digital zoom
Face/smile detectionFace detection, Smile detectionFace detection, Smile detection
BSI sensorNot supportedNot supported
HDRHDR photo only main cameraHDR photo on both cameras
2ª cameraSamsung Galaxy J4 (SM-J400M)LG K51S (K510EMW)
Front camera (secondary)5 megapixels13 megapixels
Front camera resolution2560x1920 pixels4128x3096 pixels
Video recording (secondary)HD (1280x720)Full HD (1920x1080)
Front flashLEDNot supported
Focal aperturef/2.2 (aperture)f/2.0 (aperture)
Focal lengthfeature not registeredfeature not registered
Sensor sizefeature not registeredfeature not registered
Pixel sizefeature not registeredfeature not registered
MultimediaSamsung Galaxy J4 (SM-J400M)LG K51S (K510EMW)
RadioFMNot supported
TVNot supportedNot supported
Video formatsMP4, H.264, H.263, MKV, WMVMP4, H.265, H.264, H.263, XviD, MKV
Audio formatsMP3, OGG, eAAC+, FLACMP3, WAV, WMA, eAAC+, FLAC
ConnectivitySamsung Galaxy J4 (SM-J400M)LG K51S (K510EMW)
USBMicroUSB 2.0, USB OTG On-The-GoUSB 2.0 Type-C, USB OTG On-The-Go
TV outputNot supportedNot supported
Audio output3.5mm jack3.5mm jack
Bluetooth4.2 + A2DP5.0 + A2DP/LE
WiFi802.11 b/g/n (2.4Ghz)802.11 a/b/g/n (2.4Ghz, 5Ghz)
DLNANot supportedSupported
NFCNot supportedSupported
GPSA-GPS, GeoTagging, GLONASS, BeiDouA-GPS, GeoTagging
Infrared portNot supportedNot supported
Other functionsSamsung Galaxy J4 (SM-J400M)LG K51S (K510EMW)
Active noise cancellationNot supportedSupported
Vibrating alertSupportedSupported
RingtonesPolyphonic and customizedPolyphonic and customized
Web browserHTML, XHTML, HTML5HTML, XHTML, HTML5
SensorsAccelerometer
Proximity sensor
Accelerometer
Proximity sensor
Compass
Ambient Light sensor
Fingerprint sensor (rear-mounted)
Other features- Colors: Black, Gold, Orchid Gray
- WiFi direct, hotspot
- Colors: Titanium, Blue, Pink/Red
- Silicone case included
- Google Assistant (dedicated side button)
- DTS:X 3D audio
- WiFi direct, hotspot
Power supplySamsung Galaxy J4 (SM-J400M)LG K51S (K510EMW)
BatteryLi-Ion: Lithium-Ion (Removable)LiPo: Li-Ion polymer (Non removable)
Battery capacity3000 mAh4000 mAh
Charger, watts Standard charging10W (5V/2A) Standard charging
Talk time autonomy1200 minutes | 20 hours | 0.8 day630 minutes | 10.5 hours | 0.4 day
Standbyfeature not registered22200 minutes | 370 hours | 15.4 days
Radiation rateSamsung Galaxy J4 (SM-J400M)LG K51S (K510EMW)
SAR 1.6W/kg (USA, Mexico, etc.)feature not registeredfeature not registered
SAR 2W/kg (Europe, UK, etc.)feature not registeredfeature not registered
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