SafeRooting
LG K40
LG

LG K40

Released: 2019, FebruaryPrice: About 140 EURStatus: Available. Released 2019, April

Root Support Available

Bootloader unlock, Magisk root, recovery notes, and expert support are available for this device family.

Full Specifications

OSAndroid 8.1 (Oreo), LG UX 7
CPUOcta-core 2.0 GHz Cortex-A53
GPUPowerVR GE8320
NFCYes (market/region dependent)
SIMNano-SIM, Nano-SIM + Nano-SIM
USBmicroUSB 2.0, OTG
Size5.7 inches, 83.8 cm, 2, (~76.2% screen-to-body ratio)
TypeIPS LCD
WLANWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA
BrandLG
BuildGlass front, plastic back, plastic frame
ModelLG K40
PriceAbout 140 EUR
RadioNo
SpeedHSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/50 Mbps
Video1080p@30fps
ColorsBlack, New Moroccan Blue, New Platinum Gray
ModelsLMX420, LMX420EMW, LM-X420
Single8 MP, f/2.0
StatusAvailable. Released 2019, April
Weight144 g (5.08 oz)
ChipsetMediatek MT6762 Helio P22 (12 nm)
SensorsFingerprint (rear-mounted), accelerometer, proximity, compass
2G bandsGSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 850 / 900 / 1900 / 2100
4G bands1, 3, 7, 8, 20
FeaturesLED flash
Internal32GB 2GB RAM, 32GB 3GB RAM
Released2019, February
Announced2019, February
Bluetooth5.0, A2DP, LE
Card slotmicroSDXC (dedicated slot)
3.5mm jackYes
Dimensions153 x 71.9 x 8.3 mm (6.02 x 2.83 x 0.33 in)
Resolution720 x 1440 pixels, 18:9 ratio (~282 ppi density)
TechnologyGSM / HSPA / LTE
LoudspeakerYes
PositioningGPS, GLONASS

LG K40 Overview

About LG K40 LG K40 is another flagship from LG's popular line of first class Android phones, released in the 2019. LG K40 has a wide variety of great specifications such as 32GB 2GB RAM, 32GB 3GB RAM with Mediatek MT6762 Helio P22 (12 nm) , as well as ultrasonic fingerprint sensor. The thing that makes this decent smartphone special is its sleek design and an amazing all-screen design with no notches at all.

Rooting Information

LG K40 can generally be rooted with a bootloader unlock and Magisk patched boot image workflow. Always match firmware build numbers before flashing.

Bootloader Information

Most Android rooting methods begin with bootloader unlock. Unlocking may wipe data, affect warranty, and disable some security features.

Recovery Information

Custom recovery support depends on chipset, kernel source availability, and community builds. Fastboot-based Magisk installation can work even when TWRP is unavailable.

FAQ

Can I root the LG K40?

The LG K40 supports rooting through Magisk. You'll need to unlock the bootloader first, then flash a patched boot image. Check the rooting status card on this page for availability.

Does LG K40 support custom recovery (TWRP)?

Many LG devices support TWRP. Check our device page for recovery compatibility. If TWRP isn't available, you can still use Magisk through fastboot method.

Will rooting LG K40 void warranty?

Yes, rooting the LG K40 will void the manufacturer warranty. However, you can unroot using the stock firmware to potentially restore warranty coverage.

What Android version does LG K40 run?

Check the specifications section above for the current OS version and upgrade history of your LG K40.