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LG K40 (X420EM) vs LG G3 S (D724)

Side by side comparison between LG K40 vs LG G3 S phones, differences, pros, cons and full specifications. What's the better?

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Compare LG G3 S X LG K40 (X420EM) 22Points
5.7"
IPS

720x1440

16
MP

8mp

2GB
RAM

Octa-core

3000
mAh

(Non removable)

vs
06Points LG G3 S (D724) Compare LG K40 X
5"
IPS

720x1280

8
MP

1.3mp

1GB
RAM

Quad-core

2460
mAh

(Removable)

What's the better phone? LG K40 (X420EM)

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!

K40 (X420EM)} 22 Advantages LG K40 (X420EM) vs G3 S (D724)} 6 Advantages LG G3 S (D724)
+2GHz 64bit Octa-core (12nm)129%
More powerful processor, you can open your applications faster
vs1.2GHz 32bit Quad-core
+2GB LPDDR3100%
More RAM memory. Typically more responsive and better for multitasking.
vs1GB
+32GB (20GB available)4 times
More internal storage for applications and files
vs8GB (4GB available)
+Until 1TB microSD, microSDXC15 times
More external storage for files using memory cards
vsUntil 64GB microSD, microSDXC
+8.3 millimeters (0.33 inches)24%
Thinner
vs10.3 millimeters (0.41 inches)
+720x1440 pixels13%
Higher resolution screen
vs720x1280 pixels
+5.7"14%
Larger screen
vs5"
+(back) 16MP99%
Higher resolution main camera
vs(back) 8MP
+LED flash on both camerasAdvantage
The LED flash on both cameras helps in dark places or in low light
vsLED flash
+HDR photo on both camerasAdvantage
The HDR technology produced photos with more detail in dark areas
vsHDR photo only main camera
+(front) 8MP5 times
Higher resolution secondary camera to take pictures and selfies
vs(front) 1.3MP
+(front) Full HD (1920x1080)125%
More image quality for recording videos with the secondary camera
vs(front) HD (1280x720)
+Android 8.1 OreoAdvantage
Android 8.1 Oreo is newer and safer
vsAndroid 4.4.2 KitKat
+4G LTE-AAdvantage
The 4G LTE-A network is newer and faster
vs3G+ HSPA+
+(4G LTE-A) 300 Mbps13 times
Faster for surfing the internet and download files
vs(3G+ HSPA+) 21 Mbps
+Fingerprint sensor (rear-mounted)Advantage
Sensors help you use the device
vsNot supported
+3000 mAh22%
Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
vs2460 mAh
+802.11 a/b/g/n/ac [wifi5]Advantage
WiFi 802.11 a/b/g/n/ac [wifi5] is newer and faster
vs802.11 b/g/n [wifi4]
+DLNAAdvantage
With DLNA technology you can access and play media files on TV, tablet or DLNA compatible device.
vsNot supported
+5.0 + A2DP/LEAdvantage
Bluetooth 5.0 + A2DP/LE is newer and faster
vs4.0 + A2DP
+NFCAdvantage
NFC allows you to make payments by approach quickly and securely
vsNot supported
+MIL-STD-810G military certifiedAdvantage
Protection against water allows you talk to your friends in the rain, for example
vsNot supported
145 grams (5.08 ounces)vs+134 grams (4.69 ounces)8%
Lighter
282 PPIvs+294 PPI4%
Crisper display of text, images and videos because it has more pixels per inch (ppi)
Not supportedvs+CompassAdvantage
Sensors help you use the device
Li-Ion: lithium-ion (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 supportedvs+FMAdvantage
The radio lets you listen to your songs and sports in general

14 Common items in both devices
TFT IPS LCD
16 million
Only digital zoom
PDAF: phase detection autofocus / Autofocus
Full HD (1920x1080)
Capacitive
Multitouch
+7 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 Clear highlight

๐Ÿ“ฑ Model features

LG K40 (X420EM)LG G3 S (D724)
ModelK40 (X420EM)LG G3 S (D724)
Other model namesLG K40 LMX420EM NFC Single-sim, LM-X420EM, LG-LMX420EMLG G3 D724, LG-D724, LG G3S, LG B2 mini
Country or region available(Europe)
(Europe)
BelarusKazakhstanRussiaUkraine
Belarus, Kazakhstan, Russia, Ukraine
BrandLGLG
Release date3/31/20199/15/2014
Depth8.3 millimeters (0.33 inches)10.3 millimeters (0.41 inches)
Size (width x height)71.9 x 153 millimeters (2.83 x 6.02 in)69.6 x 137.7 millimeters (2.74 x 5.42 in)
Weight145 grams (5.08 ounces)134 grams (4.69 ounces)
Build, materialsPlastic body, glass frontfeature not registered
Protection against water and othersMIL-STD-810G military certified: salt, dust, humidity, rain, vibration, solar radiation, transport and thermal shock resistant.Not supported

๐Ÿ“ฒ Display

LG K40 (X420EM)LG G3 S (D724)
Display typeTFT IPS LCDTFT IPS LCD
Screen size5.7" inches5" inches
Screen-to-body ratio~76.2% (screen-to-body ratio)~71.9% (screen-to-body ratio)
Display resolution720x1440 pixels720x1280 pixels
TouchscreenCapacitive MultitouchCapacitive Multitouch
Pixel density (dot pitch)282 PPI294 PPI
Colors16 million16 million
Scratch-resistant glassNot supportedNot supported
Refresh ratefeature not registeredfeature not registered
Display featuresfeature not registeredfeature not registered

๐Ÿค– Operating System

LG K40 (X420EM)LG G3 S (D724)
System versionAndroid 8.1 OreoAndroid 4.4.2 KitKat
Firmware updatefeature not registeredfeature not registered
User Interfacefeature not registeredfeature not registered

โš™๏ธ Processor

LG K40 (X420EM)LG G3 S (D724)
Chipset64bit: MediaTek Helio P22 (MT6762) (12nm)32bit: Qualcomm Snapdragon 400 MSM8926 (28nm)
CPUOcta-core, 2 processors:
4x 2GHz ARM Cortex-A53 (Quad-core)
4x 1.5GHz ARM Cortex-A53 (Quad-core)
Quad-core, 1 processor:
4x 1.2GHz ARM Cortex-A7 (Quad-core)
GPU graphical controllerPowerVR GE8320 (650MHz)Qualcomm Adreno 305 400Mhz
Performance (benchmark)feature not registeredfeature not registered

๐Ÿ’ฝ Memory and storage

LG K40 (X420EM)LG G3 S (D724)
RAM memory2GB LPDDR31GB
Internal storage32GB (20GB available)
eMMC 5.1
8GB (4GB available)
External storageUntil 1TB microSD, microSDXC
(dedicated slot)
Until 64GB microSD, microSDXC
(dedicated slot)

๐Ÿ“ถ Mobile networks

LG K40 (X420EM)LG G3 S (D724)
Dual-SIMNot supportedDual-SIM Standby - Call active on one sim card
(dedicated slot)
SIM card1 slot (Single-SIM)
nano-SIM (4FF)
2 slots (Dual-SIM)
micro-SIM (3FF)
Maximum Download / Upload300/50 Mbps21/5.76 Mbps
Network technology2G, 3G, 4G2G, 3G
Frequency, bands Expand band details Collapse 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 850/900/1900/2100UMTS 900/2100
Primary 4G networkLTE Cat6 (Bands 1, 3, 5, 7, 8, 20)
TD-LTE (Bands 38)
Not supported
Primary 5G networkNot supportedNot supported
Primary data networkGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-AGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+
Secondary 2G networkNot supportedGSM 850/900/1800/1900
Secondary 3G networkNot supportedNot supported
Secondary 4G networkNot supportedNot supported
Secondary data networkNot supportedGPRS, EDGE

๐Ÿ“ท Camera

LG K40 (X420EM)LG G3 S (D724)
Back camera (main camera)16 megapixels8 megapixels
Main camera resolution4608x3456 pixels3264x2448 pixels
Video recording (primary)Full HD (1920x1080) 30 fpsFull HD (1920x1080) 30 fps
FlashLED flash on both camerasLED flash
Focal aperturef/2.0 (aperture)feature not registered
Focal lengthfeature not registeredfeature not registered
Sensor size1/3" inchesfeature not registered
Pixel size1ยตm pixelfeature not registered
AutofocusPDAF: phase detection autofocusAutofocus
Touch focusSupportedSupported
Image stabilizationEIS: Digital stabilizationfeature not registered
ZoomOnly digital zoomOnly digital zoom
Face/smile detectionFace detection, Smile detectionFace detection, Smile detection
BSI sensorNot supportedSupported
HDRHDR photo on both camerasHDR photo only main camera
Camera extrasfeature not registeredfeature not registered

๐Ÿ“ธ Front camera

LG K40 (X420EM)LG G3 S (D724)
Front camera (secondary)8 megapixels1.3 megapixels
Front camera resolution3264x2448 pixels1280x1024 pixels
Video recording (secondary)Full HD (1920x1080)HD (1280x720)
Front flashLEDNot supported
Focal aperturef/2.0 (aperture)feature not registered
Focal lengthfeature not registeredfeature not registered
Sensor sizefeature not registeredfeature not registered
Pixel sizefeature not registeredfeature not registered

๐Ÿ”‰ Sound and multimedia

LG K40 (X420EM)LG G3 S (D724)
LoudspeakerSupportedSupported
Active noise cancellation2 microphones or more2 microphones or more
RadioNot supportedFM
TVNot supportedNot supported
Video formatsMP4, H.264, H.263, XviD, MKVMP4, H.264, H.263
Audio formatsMP3, WAV, WMA, eAAC+, FLACMP3, WAV, eAAC+, FLAC

๐Ÿ”Œ Connectivity

LG K40 (X420EM)LG G3 S (D724)
USBMicroUSB 2.0, USB OTG On-The-GoMicroUSB 2.0
Audio output3.5mm jack3.5mm jack
TV outputNot supportedNot supported
Bluetooth5.0 + A2DP/LE4.0 + A2DP
WiFi802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO
WiFi Direct, hotspot
802.11 b/g/n [wifi4] (2.4GHz)
WiFi Direct, hotspot
DLNASupportedNot supported
GPSA-GPS, GeoTaggingA-GPS, GeoTagging, GLONASS
NFCSupportedNot supported
Infrared portNot supportedNot supported

๐Ÿงญ Sensors

LG K40 (X420EM)LG G3 S (D724)
SensorsAccelerometer
Ambient light sensor
Fingerprint sensor (rear-mounted)
Proximity sensor
Accelerometer
Ambient light sensor
Compass
Proximity sensor
Vibrating alertSupportedSupported

๐Ÿ”‹ Battery

LG K40 (X420EM)LG G3 S (D724)
Battery typeLi-Ion: lithium-ion (Non removable)Li-Ion: lithium-ion (Removable)
Battery capacity3000 mAh2460 mAh
Charger, wattsWired chargingWired charging
Inductive / wireless chargingfeature not registeredfeature not registered
Talk time autonomy8 hoursfeature not registered
Standby100 hours (4.2 days)feature not registered

โž• Other features

LG K40 (X420EM)LG G3 S (D724)
Call controlVoice dialing, Voice recorderVoice dialing, Voice recorder, Voice commands
MessagingSMS (T9), MMS, E-mail, Push mailSMS (T9), MMS, E-mail, Push mail
Hands-free callingSupportedSupported
Video callingSupportedSupported
RingtonesPolyphonic and customizedPolyphonic and customized
Web browserHTML, XHTML, HTML5HTML, XHTML, HTML5
AntennaInternal antennaInternal antenna
Qwerty physical keyboardNot supportedNot supported
Miscellaneousโ€ข Colors: Black, Moroccan Blue, Platinum Gray
โ€ข 18:9 ratio FullVision display
โ€ข LED notification
โ€ข DTS-X Surround sound
โ€ข Colors: Metallic Black, Silk White
โ€ข HD Voice
โ€ข Knock Code, QSlide 2.0, QuickMemo+
โ€ข Rear-Key
โ€ข MiraCast
โ€ข Java framework

โ˜ข๏ธ Radiation rate

LG K40 (X420EM)LG G3 S (D724)
SAR 1.6W/kg (USA, Mexico, etc.)feature not registeredfeature not registered
SAR 2W/kg (Europe, UK, etc.)feature not registered0.34W/kg (head), 0.34W/kg (body)
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