LG K40

Full Specifications

Released · March 2019

5.7-inch

Single camera

3000 mAh

2GB · 16GB

This device is also known as LG LM-X420

4.0

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Popular Comparisons

The LG K40 is most commonly compared with these phones:

• 

  LG K40
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  LG K20 (2019)
• 

  LG K40
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  LG K8x
• 

  LG K40
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  LG Tribute Empire
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  LG K40
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  Motorola Moto G 5G (2022)
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  LG K40
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  LG Aristo 3

Design
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

Display
Size	5.7-inch
Resolution	1440x720px, 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
GPU	Adreno 506
Memory	2GB (LPDDR3)/16GB
Storage expansion	microSDXC up to 2000 GB
OS	Android (8.1 Oreo)
This device has different variants: View all

Battery
Type	3000 mAh, Li - Polymer

Camera
Rear	Single camera
Main camera	8 MP (PDAF) Aperture size: F2.0 Sensor size: 1/3" Pixel size: 1 μm
Flash	LED
Video recording	1080p (30 fps) Video calling, Video sharing
Front	5 MP (Flash)
This device has different variants: View all

Connectivity & Features
Bluetooth	5.0
WLAN	802.11 a,b,g,n,ac,dual-band Wi-Fi Direct, Hotspot
USB	microUSB, USB 2.0
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

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

Cellular
4G (FDD)	Bands 2, 4, 5, 12, 13, 66(AWS-3)
3G	Bands 5, 8, 2, 1
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
This device has different variants: View all

Buyers information
MSRP	$ 180

Availability
Officially announced	Feb 20, 2019

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Alternative variants

International version

Differences from the main variant:
System chip	MediaTek Helio P22 MT6762 (12 nm)
Processor	Octa-core 2000 MHz ARM Cortex-A53
GPU	IMG PowerVR GE8320
Memory	32GB
Main camera	16 MP
Front	8 MP
4G (FDD)	Bands 1, 3, 7, 8, 20
4G (TDD)	Bands 38
Dual SIM	Yes

for Metro by T-Mobile

Differences from the main variant:
Memory	32GB
OS	Android (9.0 Pie)
Main camera	13 MP
Front	5 MP
4G (FDD)	Bands 2, 4, 5, 7, 12, 25, 26, 66(AWS-3), 71(600)
4G (TDD)	Bands 41
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

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After releasing the high-end G8 ThinQ and V50 ThinQ, plus the mid-range Stylo 5, LG this week launched a fourth 2019 smartphone in the US. This time, however, we're talking about a lower end model - the LG K40. Officially announced back in February, ...