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LG K40 (X420EMW) vs LG K50 (X520EMW)

Side by side comparison between LG K40 vs LG K50 phones, differences, pros, cons with full specifications. What's the better?

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Compare LG K50 XLG K40 (X420EMW)08Points
LG K40 (X420EMW)
5.7"
IPS

720x1440

16
MP

8mp

2GB
RAM

64bit Octa

3000
mAh

(Non removable)

vs
08PointsLG K50 (X520EMW)Compare LG K40 X
LG K50 (X520EMW)
6.26"
IPS

720x1520

13
MP

13mp

3GB
RAM

64bit Octa

3500
mAh

(Non removable)

What's the better phone? LG K40 (X420EMW)

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 (X420EMW)8 Advantages LG K40 (X420EMW)vsK50 (X520EMW)8 Advantages LG K50 (X520EMW)
+32GB (20GB available)11%
More internal storage for applications and files
vs32GB (18GB available)
+145 grams (5.08 ounces)17%
Lighter
vs170 grams (5.95 ounces)
+8.3 millimeters (0.33 inches)5%
Thinner
vs8.75 millimeters (0.34 inches)
+282 PPI5%
Crisper display of text, images and videos because it has more pixels per inch (ppi)
vs269 PPI
+(back) 16MP6%
Higher resolution main camera
vs(dual camera) 13MP + 2MP
+LED flash on both camerasAdvantage
The LED flash on both cameras helps in dark places or in low light
vsLED flash
+1/3" inches3%
The larger sensor camera lets you take photos with better depth.
vs1/3.1" inches
+f/2.0 (aperture)10%
Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.
vsf/2.2 (aperture)
2GB LPDDR3vs+3GB LPDDR350%
More RAM memory. Typically more responsive and better for multitasking.
720x1440 pixelsvs+720x1520 pixels6%
Higher resolution screen
5.7"vs+6.26"10%
Larger screen
(front) 8MPvs+(front) 13MP62%
Higher resolution secondary camera to take pictures and selfies
Android 8.1 Oreovs+Android 9.0 PieAdvantage
Android 9.0 Pie is newer and safer
Not supportedvs+CompassAdvantage
Sensors help you use the device
Not supportedvs+Face unlockAdvantage
Sensors help you use the device
3000 mAhvs+3500 mAh17%
Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use

35 Common items in both devices
2Ghz 64bit Octa-Core
eMMC 5.1
Until 1TB microSD, microSDXC
Plastic body, glass front
TFT IPS LCD
16 million
Only digital zoom
+28 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 featuresLG K40 (X420EMW)LG K50 (X520EMW)
ModelK40 (X420EMW)K50 (X520EMW)
Other model namesLG K40 LMX420EMW NFC Dual-sim, LM-X420EMW, LG-LMX420EMWLG K50 LMX520EMW, LM-X520EMW, LG K50 Dual CAM
Country or region available(Global, International)(Europe)
(Global, International), (Europe)
(Europe)(Global, International)
(Europe), (Global, International)
BrandLGLG
Release dateMarch, 2019June, 2019
Depth8.3 millimeters (0.33 inches)8.75 millimeters (0.34 inches)
Size (width x height)71.9 x 153 millimeters (2.83 x 6.02 in)77 x 161.3 millimeters (3.03 x 6.35 in)
Weight145 grams (5.08 ounces)170 grams (5.95 ounces)
Qwerty physical keyboardNot supportedNot supported
AntennaInternal antennaInternal antenna
Build, materialsPlastic body, glass frontPlastic body, glass front
Protection against water and othersMIL-STD-810G military certified: salt, dust, humidity, rain, vibration, solar radiation, transport and thermal shock resistant.MIL-STD-810G military certified: salt, dust, humidity, rain, vibration, solar radiation, transport and thermal shock resistant.
System (OS)LG K40 (X420EMW)LG K50 (X520EMW)
Operating systemAndroid 8.1 OreoAndroid 9.0 Pie
Firmware updatefeature not registeredfeature not registered
HardwareLG K40 (X420EMW)LG K50 (X520EMW)
Chipset64bit - MediaTek MT6762 Helio P22 (12nm)64bit - MediaTek MT6762 Helio P22 (12nm)
CPU processorOcta-Core, 2 processors:
2Ghz Quad-Core ARM Cortex-A53
1.5Ghz Quad-Core ARM Cortex-A53
Octa-Core, 2 processors:
2Ghz Quad-Core ARM Cortex-A53
1.5Ghz Quad-Core ARM Cortex-A53
GPU graphical controllerPowerVR GE8320 650MhzPowerVR GE8320 650Mhz
RAM memory2GB LPDDR33GB LPDDR3
Internal storage32GB (20GB available)
eMMC 5.1
32GB (18GB available)
eMMC 5.1
External storageUntil 1TB microSD, microSDXC
(dedicated slot)
Until 1TB microSD, microSDXC
(dedicated slot)
DisplayLG K40 (X420EMW)LG K50 (X520EMW)
Display typeTFT IPS LCDTFT IPS LCD
Screen size5.7" inches6.26" inches
Screen-to-body ratio~76.2% (screen-to-body ratio)~78.8% (screen-to-body ratio)
Display resolution720x1440 pixels720x1520 pixels
TouchscreenCapacitive MultitouchCapacitive Multitouch
Pixel density (dot pitch)282 PPI269 PPI
Colors16 million16 million
Scratch-resistant glassNot supportedNot supported
Display featuresfeature not registeredfeature not registered
Mobile networksLG K40 (X420EMW)LG K50 (X520EMW)
Dual-SIMDual-SIM Standby - Call active on one sim card
(dedicated slot)
Dual-SIM Standby - Call active on one sim card
(dedicated slot)
SIM card2 slots (Dual-SIM)
nano-SIM (4FF)
2 slots (Dual-SIM)
nano-SIM (4FF)
Maximum download/upload300/50 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 850/900/1900/2100UMTS 850/900/1900/2100
Primary 4G networkLTE Cat6 (Bands 1, 3, 5, 7, 8, 20)
TD-LTE (Bands 38)
LTE Cat6 (Bands 1, 3, 7, 8, 20)
TD-LTE (Bands 38)
Primary 5G networkNot supportedNot supported
Primary data networkGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-AGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A
Secondary 2G networkGSM 850/900/1800/1900GSM 850/900/1800/1900
Secondary 3G networkNot supportedNot supported
Secondary 4G networkNot supportedNot supported
Secondary data networkGPRS, EDGEGPRS, EDGE
CallingLG K40 (X420EMW)LG K50 (X520EMW)
MessagingSMS (T9), MMS, E-mail, Push mailSMS (T9), MMS, E-mail, Push mail
SpeakerphoneSupportedSupported
Video callingSupportedSupported
Call controlVoice dialing, Voice recorderVoice dialing, Voice recorder
CameraLG K40 (X420EMW)LG K50 (X520EMW)
Back camera (main camera)16 megapixels(dual camera)
13 megapixels
2MP depthf/2.41/5"1.75um86º
Main camera resolution4608x3456 pixels4160x3120 pixels
Video recording (primary)Full HD (1920x1080) 30 fpsFull HD (1920x1080) 30 fps
FlashLED flash on both camerasLED flash
Focal aperturef/2.0 (aperture)f/2.2 (aperture)
Focal lengthfeature not registered26mm lens
Sensor size1/3" inches1/3.1" inches
Pixel size1µm pixel1.12µm pixel
AutofocusPDAF: phase detection autofocusPDAF: 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 on both camerasHDR photo on both cameras
2ª cameraLG K40 (X420EMW)LG K50 (X520EMW)
Front camera (secondary)8 megapixels13 megapixels
Front camera resolution3264x2448 pixels4160x3120 pixels
Video recording (secondary)Full HD (1920x1080)Full HD (1920x1080)
Front flashLEDNot supported
Focal aperturef/2.0 (aperture)f/2.0 (aperture)
Focal lengthfeature not registeredfeature not registered
Sensor sizefeature not registered1/3.1" inches
Pixel sizefeature not registered1.12µm pixel
MultimediaLG K40 (X420EMW)LG K50 (X520EMW)
RadioNot supportedNot supported
TVNot supportedNot supported
Video formatsMP4, H.264, H.263, XviD, MKVMP4, H.264, H.263, XviD, MKV
Audio formatsMP3, WAV, WMA, eAAC+, FLACMP3, WAV, WMA, eAAC+, FLAC
ConnectivityLG K40 (X420EMW)LG K50 (X520EMW)
USBMicroUSB 2.0, USB OTG On-The-GoMicroUSB 2.0, USB OTG On-The-Go
TV outputNot supportedNot supported
Audio output3.5mm jack3.5mm jack
Bluetooth5.0 + A2DP/LE5.0 + A2DP/LE
WiFi802.11 a/b/g/n/ac (2.4Ghz, 5Ghz) + MIMO802.11 a/b/g/n/ac (2.4Ghz, 5Ghz) + MIMO
DLNASupportedSupported
NFCSupportedSupported
GPSA-GPS, GeoTaggingA-GPS, GeoTagging
Infrared portNot supportedNot supported
Other functionsLG K40 (X420EMW)LG K50 (X520EMW)
Active noise cancellationSupportedSupported
Vibrating alertSupportedSupported
RingtonesPolyphonic and customizedPolyphonic and customized
Web browserHTML, XHTML, HTML5HTML, XHTML, HTML5
SensorsAccelerometer
Proximity sensor
Ambient Light sensor
Fingerprint sensor (rear-mounted)
Accelerometer
Proximity sensor
Compass
Ambient Light sensor
Face unlock
Fingerprint sensor (rear-mounted)
Other features- Colors: Black, Moroccan Blue, Platinum Gray
- 18:9 ratio FullVision display
- LED notification
- DTS-X Surround sound
- WiFi direct, hotspot
- Colors: Aurora black, Platinum gray, Moroccan blue
- 19:9 display ratio
- LG UX 7
- DTS:X surround sound
- WiFi direct, hotspot
Power supplyLG K40 (X420EMW)LG K50 (X520EMW)
BatteryLi-Ion: Lithium-Ion (Non removable)LiPo: Li-Ion polymer (Non removable)
5V/1.2A
Battery capacity3000 mAh3500 mAh
Charger, watts Standard charging Standard charging
Talk time autonomy480 minutes | 8 hours | 0.3 day1020 minutes | 17 hours | 0.7 day
Standby6000 minutes | 100 hours | 4.2 days19080 minutes | 318 hours | 13.3 days
Radiation rateLG K40 (X420EMW)LG K50 (X520EMW)
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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