LG K40 vs LG K8x Specs Comparison

Display

Size
5.7-inch	5.7-inch
Resolution
1440 x 720 px, 18:9 ratio, 282 PPI	1520 x 720 px, 19:9 ratio, 295 PPI
Technology
IPS LCD	IPS LCD
Screen-to-body
76.28 %	77.13 %
Features
Scratch-resistant glass (Tempered Glass), Ambient light sensor, Proximity sensor	Ambient light sensor, Proximity sensor

Hardware

System chip
Qualcomm Snapdragon 450 SDM450 (14 nm)	MediaTek Helio P22 MT6762 (12 nm)
Processor
Octa-core, 2000 MHz, ARM Cortex-A53, 64-bit	Octa-core, 2000 MHz, Arm Cortex-A53, 64-bit
GPU
Adreno 506	IMG PowerVR GE8320
RAM
2GB (LPDDR3)	2GB
Internal storage
16GB, available to use: 8 GB	32GB
Storage expansion
microSDXC up to 2000 GB	microSDXC
OS
Android (8.1 Oreo)	Android (10)
Device type
Smartphone	Smartphone

Battery

Capacity
3000 mAh	3000 mAh
Type
Li - Polymer, Not user replaceable	Not user replaceable

Camera

Rear
Single camera	Dual camera
Main camera
8 MP (PDAF) Specifications: Aperture size: F2.0 Sensor size: 1/3" Pixel size: 1 μm	13 MP (PDAF) Specifications: Aperture size: F1.8 Sensor size: 1/3" Pixel size: 1.12 μm
Second camera
	5 MP (Ultra-wide) Specifications: Aperture size: F2.2 Sensor size: 1/5" Pixel size: 1.12 μm
Flash
LED	LED
Video recording
1920x1080 (Full HD) (30 fps) Features: Video calling, Video sharing	1920x1080 (Full HD) (30 fps)
Front
5 MP (Flash)	5 MP, Video capture: 1920x1080 (Full HD)

Design

Dimensions
6.02 x 2.83 x 0.33 inches (153.0 x 71.9 x 8.3 mm)	5.82 x 2.8 x 0.34 inches (147.8 x 71.1 x 8.6 mm)
Weight
5.11 oz(145.0 g)	5.15 oz(146.0 g)
Materials
Back: Plastic	Back: Plastic Frame: Plastic
Resistance
Shock; MIL-STD-810 certified
Biometrics
Fingerprint (touch)	Fingerprint (touch)
Keys
Left: Volume control; Right: Lock/Unlock key	Left: Volume control; Right: Lock/Unlock key
Colors
Black, Gray, Blue	Silver

Cellular

4G (FDD)
Bands 2(1900), 4(AWS-1), 5(850), 12(700 a), 13(700 c), 66(AWS-3)	Bands 2(1900), 4(AWS-1), 5(850), 12(700 a), 13(700 c), 25(1900+), 66(AWS-3)
4G (TDD)
	Bands 41(2600+)
3G
Bands 5(850), 8(900), 2(1900), 1(2100)	Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)
Data Speed
LTE-A Cat 6 (300/50 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s	LTE-A Cat 7 (300/100 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
SIM type
Nano SIM	Nano SIM
HD Voice
Yes	Yes

Multimedia

Headphones
3.5mm jack	3.5mm jack
Speakers
Earpiece, Loudspeaker	Earpiece, Loudspeaker
Features
Album art cover, Background playback
Screen mirroring
Wireless screen share	Wireless screen share
Radio
FM	FM
Additional microphone(s)
Noise cancellation

Connectivity & Features

Bluetooth
5.0	5.0
Wi-Fi
802.11 a,b,g,n,ac,dual-band Wi-Fi Direct, Hotspot	802.11 b,g,n Wi-Fi Direct, Hotspot
USB
microUSB, USB 2.0, Features: Charging, OTG, Mass storage device	microUSB, USB 2.0, Features: Charging
Hearing aid compatible
M3/T3	M3/T3
Location
GPS, A-GPS, Glonass, Cell ID, Wi-Fi positioning	GPS, A-GPS, Cell ID, Wi-Fi positioning
Sensors
Accelerometer, Compass	Accelerometer
Other
NFC, VoIP, Tethering, Computer sync, OTA sync

Regulatory Approval

FCC approval
	Date approved: Apr 01, 2020 FCC ID value: ZNFK300UM
Measured SAR
	Head: 0.52 W/kg Body: 0.91 W/kg Simultaneous Transmission: 1.24 W/kg Wireless Router: 0.94 W/kg

Buyers information

MSRP
$ 180	$ 40
In The Box
	Handset, Travel Adapter, USB Data Cable, SIM card, Quick Reference Guide

Availability

Officially announced
Feb 20, 2019

Alternative variants

International version

System chip	MediaTek Helio P22 MT6762 (12 nm)
Processor	Octa-core, 2000 MHz, ARM Cortex-A53, 64-bit
GPU	IMG PowerVR GE8320
Internal storage	32GB, available to use: 20.2 GB
Main camera	16 MP
Front	8 MP
4G (FDD)	Bands 1(2100), 3(1800), 7(2600), 8(900), 20(800 DD)
4G (TDD)	Bands 38(2600)
Dual SIM	Yes

for Metro by T-Mobile

Internal storage	32GB, available to use: 17.9 GB
OS	Android (9.0 Pie)
Main camera	13 MP
Front	5 MP
4G (FDD)	Bands 2(1900), 4(AWS-1), 5(850), 7(2600), 12(700 a), 25(1900+), 26(850+), 66(AWS-3), 71(600)
4G (TDD)	Bands 41(2600+)
FCC approval	Date approved: May 28, 2019 FCC ID value: ZNFX420MM
Measured SAR	Head: 0.51 W/kg Body: 0.98 W/kg Simultaneous Transmission: 1.59 W/kg Wireless Router: 0.98 W/kg Phablet: 3.99 W/kg

Links

Full specifications
LG K40 Specs	LG K8x Specs
User Reviews
LG K40 User Reviews