LG K40 Specs

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User Score (1 review)

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Released

March 2019

Display

5.7-inch
1440 x 720 px

Camera

8 MP Main
5 MP Selfie

Battery

3000 mAh

Storage

16GB

Hardware

Qualcomm Snapdragon 450
2GB RAM

OS

Android 8.1 Oreo

Description

The LG K40 specifications include a 5.7-inch display with 720 x 1440 pixels resolution, an octa-core processor, 2 GB RAM, and 16-megapixel main camera. The phone is powered by 3000 mAh battery.

This device is also known as LG LM-X420

I want it 2 users

I have it 2 users

I had it 2 users

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Specs Compare

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

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

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

Camera
Rear:	Single camera
Main camera:	8 MP (PDAF)
Specifications:	Aperture size: F2.0 Sensor size: 1/3" Pixel size: 1 μm
Flash:	LED
Video recording:	1920x1080 (Full HD) (30 fps)
Features:	Video calling, Video sharing
Front:	5 MP (Flash)

Design Size comparison
Dimensions:	6.02 x 2.83 x 0.33 inches (153.0 x 71.9 x 8.3 mm)
Weight:	5.11 oz (145.0 g)
Materials:	Back: Plastic
Resistance:	Shock; MIL-STD-810 certified
Biometrics:	Fingerprint (touch)
Keys:	Left: Volume control; Right: Lock/Unlock key
Colors:	Black, Gray, Blue

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

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

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

Buyers information
Price:	$ 180

Availability
Officially announced:	Feb 20, 2019

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Alternative variants

LG K40

International version

Differences from the main variant:
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

LG K40

for Metro by T-Mobile

Differences from the main variant:
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

Carrier Availability

Discontinued

AT&T
T-Mobile
U.S. Cellular
Metro by T-Mobile

News

It's raining free mid-range phone deals at T-Mobile, no trade-in needed

T-Mobile launches the LG Aristo 4+ and LG K40, two of its cheapest 2019 smartphones

Switch to Metro, bring your number, and score a free Samsung Galaxy A20

Affordable LG K40 now available in the US (works on T-Mobile, Verizon, AT&T)

Overall User Rating

(1 review)

Build quality

Camera quality

Performance

Display

Battery life and charging

Carlos_esp

Arena Apprentice

Worst Phone I ever had

Posted: May 04, 2020, 6:12 PM

Phone owned for less than a year

I broke my previous phone, so the carrier gave me an LG K40. Well, actually, they gave me three LG K40 and two K40s. I guess they didn't sell may of them. Definitely, I can state this is the worst phone I've ever had. My previous one was a Xiaomi Mi 8 and I also had a Lumia 950, and several HTC. So, this phone is temporary. It's always freezing and goes so slowly, and probably it's because the bad IU. The camera isn't good, maybe is not all that bad, but I always used to good cameras. The selfie camera has flash, no complaints about that, but it doesn't takes good selfies. The pro is the battery, better than my previous phone, it lasts a day easily, sometimes even two.