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LG K40 (X420EMW) vs Motorola Moto G31 (128GB/4GB)

Side by side comparison between LG K40 vs Motorola Moto G31 phones, differences, pros, cons and full specifications. What's the better?

,
LG K40 (X420EMW)
5.7"
IPS

720x1440

16
MP

8mp

2GB
RAM

64bit Octa

3000
mAh

(Non removable)

vs
18PointsMotorola Moto G31 (128GB/4GB)Compare LG K40 X
Motorola Moto G31 (128GB/4GB)
6.4"
AMOLED

1080x2400

50
MP

13mp

4GB
RAM

64bit Octa

5000
mAh

(Non removable)

What's the better phone? Motorola Moto G31 (128GB/4GB)

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)7 Advantages LG K40 (X420EMW)vsMoto G31 (128GB/4GB)18 Advantages Motorola Moto G31 (128GB/4GB)
+145 grams (5.08 ounces)25%
Lighter
vs181 grams (6.34 ounces)
+8.3 millimeters (0.33 inches)4%
Thinner
vs8.6 millimeters (0.34 inches)
+LED flash on both camerasAdvantage
The LED flash on both cameras helps in dark places or in low light
vsLED flash
+2 slots (Dual-SIM)
(dedicated slot)Advantage
You can have more mobile carriers/operators on the same device.
vs2 slots (Dual-SIM)
(hybrid slot/shares the same microSD slot)
+DLNAAdvantage
With DLNA technology you can access and play media files on TV, tablet or DLNA compatible device.
vsNot supported
+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
vsWater repellent nano-coating (don't immerse)
2GHz 64bit Octa-Corevs+2GHz 64bit Octa-Core9%
More powerful processor, you can open your applications faster
2GB LPDDR3vs+4GB LPDDR4X100%
More RAM memory. Typically more responsive and better for multitasking.
32GB (20GB available)vs+128GB (108GB available)4 times
More internal storage for applications and files
TFT IPS LCDvs+AMOLEDAdvantage
AMOLED display is brighter and more vivid
720x1440 pixelsvs+1080x2400 pixels150%
Higher resolution screen
282 PPIvs+411 PPI46%
Crisper display of text, images and videos because it has more pixels per inch (ppi)
5.7"vs+6.4"12%
Larger screen
(back) 16MPvs+(triple camera) 50MP + 8MP + 2MP3 times
Higher resolution main camera
Not supportedvs+BSI sensorAdvantage
The BSI sensor allows the entry of more light generating photos with more detail and brightness
f/2.0 (aperture)vs+f/1.8 (aperture)11%
Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.
(front) 8MPvs+(front) 13MP60%
Higher resolution secondary camera to take pictures and selfies
Android 8.1 Oreovs+Android 11Advantage
Android 11 is newer and safer
Not supportedvs+CompassAdvantage
Sensors help you use the device
Not supportedvs+Face unlockAdvantage
Sensors help you use the device
Not supportedvs+GyroscopeAdvantage
Sensors help you use the device
3000 mAhvs+5000 mAh67%
Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
Not supportedvs+FMAdvantage
The radio lets you listen to your songs and sports in general
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.

29 Common items in both devices
eMMC 5.1
Until 1TB microSD, microSDXC
Plastic body, glass front
16 million
Only digital zoom
PDAF: phase detection autofocus
EIS: Digital stabilization
+22 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

📱 Model features

LG K40 (X420EMW)Motorola Moto G31 (128GB/4GB)
ModelK40 (X420EMW)Moto G31 (128GB/4GB)
Other model namesLG K40 LMX420EMW NFC Dual-sim, LM-X420EMW, LG-LMX420EMWLenovo Moto G31 XT2173-1, XT2173-2, XT2173-3
Country or region available(Global, International)(Europe)
(Global, International), (Europe)
(Europe)(Global, International)
(Europe), (Global, International)
BrandLGMotorola
Release date3/31/201912/6/2021, Announced: 11/18/2021
Depth8.3 millimeters (0.33 inches)8.6 millimeters (0.34 inches)
Size (width x height)71.9 x 153 millimeters (2.83 x 6.02 in)73.87 x 161.89 millimeters (2.91 x 6.37 in)
Weight145 grams (5.08 ounces)181 grams (6.34 ounces)
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.Water repellent nano-coating (don't immerse)

🤖 Operating System

LG K40 (X420EMW)Motorola Moto G31 (128GB/4GB)
System versionAndroid 8.1 OreoAndroid 11
Firmware updatefeature not registeredfeature not registered
User Interfacefeature not registeredfeature not registered

⚙️ Processor

LG K40 (X420EMW)Motorola Moto G31 (128GB/4GB)
Chipset64bit - MediaTek Helio P22 (MT6762) (12nm)64bit - MediaTek Helio G85 (12nm)
CPUOcta-Core, 2 processors:
2GHz Quad-Core ARM Cortex-A53
1.5GHz Quad-Core ARM Cortex-A53
Octa-Core, 2 processors:
2GHz Dual-Core ARM-Cortex-A75
1.8GHz Hexa-Core ARM-Cortex-A55
GPU graphical controllerPowerVR GE8320 (650MHz)ARM Mali-G52 MC2 (1GHz)
Performance (benchmark)feature not registeredAnTuTu: 228765 (v9)

💽 Memory and storage

LG K40 (X420EMW)Motorola Moto G31 (128GB/4GB)
RAM memory2GB LPDDR34GB LPDDR4X
Internal storage32GB (20GB available)
eMMC 5.1
128GB (108GB available)
eMMC 5.1
External storageUntil 1TB microSD, microSDXC
(dedicated slot)
Until 1TB microSD, microSDXC
(hybrid slot/shares the same SIM-2 slot)

📲 Display

LG K40 (X420EMW)Motorola Moto G31 (128GB/4GB)
Display typeTFT IPS LCDAMOLED
Screen size5.7" inches6.4" inches
Screen-to-body ratio~76.2% (screen-to-body ratio)~82.7% (screen-to-body ratio)
Display resolution720x1440 pixels1080x2400 pixels (20:9)
TouchscreenCapacitive MultitouchCapacitive Multitouch
Pixel density (dot pitch)282 PPI411 PPI
Colors16 million16 million
Scratch-resistant glassNot supportedNot supported
Refresh ratefeature not registered60Hz
Display featuresfeature not registeredNot supported

📶 Mobile networks

LG K40 (X420EMW)Motorola Moto G31 (128GB/4GB)
Dual-SIMDual-SIM Standby - Call active on one sim card
(dedicated slot)
Dual-SIM Standby - Call active on one sim card
(hybrid slot/shares the same microSD slot)
SIM card2 slots (Dual-SIM)
nano-SIM (4FF)
2 slots (Dual-SIM)
nano-SIM (4FF)
Maximum download/upload300/50 Mbps300/150 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 850/900/1700/1900/2100
Primary 4G networkLTE Cat6 (Bands 1, 3, 5, 7, 8, 20)
TD-LTE (Bands 38)
LTE Cat7 (1, 2, 3, 5, 7, 8, 18, 19, 20, 26, 28)
TD-LTE (38, 40, 41)
VoLTE
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 supportedUMTS 850/900/1700/1900/2100
Secondary 4G networkNot supportedLTE Cat7 (1, 2, 3, 5, 7, 8, 18, 19, 20, 26, 28)
TD-LTE (38, 40, 41)
VoLTE
Secondary data networkGPRS, EDGEGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A

📷 Camera

LG K40 (X420EMW)Motorola Moto G31 (128GB/4GB)
Back camera (main camera)16 megapixels(triple camera)
50 megapixels
8MP ultrawidef/2.2118°1/4"1.12µm
2MP macrof/2.4
Main camera resolution4608x3456 pixels8160x6120 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/1.8 (aperture)
Focal lengthfeature not registeredfeature not registered
Sensor size1/3" inchesfeature not registered
Pixel size1µm pixel0.64µm 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 supportedSupported
HDRHDR photo on both camerasHDR photo on both cameras
Camera extrasfeature not registeredfeature not registered

📸 Front camera

LG K40 (X420EMW)Motorola Moto G31 (128GB/4GB)
Front camera (secondary)8 megapixels13 megapixels
Front camera resolution3264x2448 pixels4128x3096 pixels
Video recording (secondary)Full HD (1920x1080)Full HD (1920x1080)
Front flashLEDNot supported
Focal aperturef/2.0 (aperture)f/2.2 (aperture)
Focal lengthfeature not registeredfeature not registered
Sensor sizefeature not registeredfeature not registered
Pixel sizefeature not registered1.12µm pixel

🔉 Sound and multimedia

LG K40 (X420EMW)Motorola Moto G31 (128GB/4GB)
LoudspeakerSupportedMono sound (not stereo)
Dolby Atmos
Active noise cancellation2 microphones or more2 microphones or more
RadioNot supportedFM
TVNot supportedNot supported
Video formatsMP4, H.264, H.263, XviD, MKVMP4, H.265, H.264, H.263, XviD, MKV
Audio formatsMP3, WAV, WMA, eAAC+, FLACMP3, WAV, WMA, eAAC+, FLAC

🔌 Connectivity

LG K40 (X420EMW)Motorola Moto G31 (128GB/4GB)
USBMicroUSB 2.0, USB OTG On-The-GoUSB 2.0 Type-C reversible connector
Audio output3.5mm jack3.5mm jack
TV outputNot supportedNot supported
Bluetooth5.0 + A2DP/LE5.0 + A2DP/LE
WiFi802.11 a/b/g/n/ac (2.4Ghz, 5Ghz) + MIMO
WiFi Direct, hotspot
802.11 a/b/g/n/ac (2.4Ghz, 5Ghz)
WiFi Direct, hotspot
DLNASupportedNot supported
GPSA-GPS, GeoTaggingA-GPS, GeoTagging, GLONASS, GALILEO
NFCSupportedNot supported
Infrared portNot supportedNot supported

🧭 Sensors

LG K40 (X420EMW)Motorola Moto G31 (128GB/4GB)
SensorsAccelerometer
Ambient Light sensor
Fingerprint sensor (rear-mounted)
Proximity sensor
Accelerometer
Ambient Light sensor
Compass
Face unlock
Fingerprint sensor (side-mounted)
Gyroscope
Proximity sensor
Vibrating alertSupportedSupported

🔋 Battery

LG K40 (X420EMW)Motorola Moto G31 (128GB/4GB)
Battery typeLi-Ion: Lithium-Ion (Non removable)LiPo: Li-Ion polymer (Non removable)
Battery capacity3000 mAh5000 mAh
Charger, watts Standard charging10W Standard charging
Talk time autonomy8 hoursfeature not registered
Standby100 hours (4.2 days)feature not registered

➕ Other features

LG K40 (X420EMW)Motorola Moto G31 (128GB/4GB)
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
Miscellaneous- Colors: Black, Moroccan Blue, Platinum Gray
- 18:9 ratio FullVision display
- LED notification
- DTS-X Surround sound
- Colors: Mineral Grey, Baby Blue

☢️ Radiation rate

LG K40 (X420EMW)Motorola Moto G31 (128GB/4GB)
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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