Overview LG X420QM6(LMX420QM6) aka LG K40

Specification LG X420QM6(LMX420QM6) aka LG K40

Model and Features
Model LG X420QM6
Series LG K40
Release Date March, 2019
Depth 8.3 mm (0.33 in)
Size (width x height) 153.2 x 71.9 mm (6.03 x 2.83 in)
Weight 144 g (5.08 oz)
Operating System Android 9 Pie
Hardware
CPU 2.0GHz MediaTek MT6762
CPU Cores Octa-core
RAM Memory 2GB
Internal Storage 32GB
External Storage microSD, up to 1 TB
Network and Data
Number of sim slots 2 Nano-Sim
2G network GSM 850/900/1800/1900 MHz
3G network HSDPA 850/900/1900/2100 MHz
4G network LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 13(700), 17(700), 20(800), 25(1900), 26(850), 28(700), 40(2300), 41(2500), 46, 48, 66(1700/2100)
5G network -
Data GPRS/EDGE
Display
Screen size 5.7 inches (~75.4% screen-to-body ratio)
Display Type IPS LCD capacitive touchscreen
Display Resolution 720 x 1440 pixels (~284 ppi density)
Display Colors 16M colors
Battery and Keyboard
Battery Capacity Non-removable Li-Ion 3000 mAh
Physical keyboard -
Interfaces
Audio output 3.5mm jack
Bluetooth version 5.0, A2DP, LE, aptX HD
DLNA Yes
GPS Yes, with A-GPS, GLONASS
Infrared port No
NFC No
USB microUSB 2.0
WiFi Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot

Firmwares LG X420QM6(LMX420QM6) aka LG K40

LG Phone firmwares regions descriptions
Region File name OS Size Date Downloads
RCH
  • Unknown
X420QM620b_00_CHT_US_OP_1108.kdz Android 9 Pie 2.6 GiB 2020-02-21 8 time(s)
RCH
  • Unknown
X420QM620c_00_CHT_US_OP_0204.kdz Android 9 Pie 2.6 GiB 2020-03-05 4 time(s)

Manual LG X420QM6(LMX420QM6) aka LG K40

How to Hard Reset on LG X420QM6(LMX420QM6) aka LG K40 ?


Type 1:

Hard Reset keys Type 1 LG X420QM6(LMX420QM6) aka LG K40

 

Type 2:

Hard Reset keys Type 2 LG X420QM6(LMX420QM6) aka LG K40

 

Type 3:

Hard Reset keys Type 3 LG X420QM6(LMX420QM6) aka LG K40

 

  1. Turn off the phone.
  2. Next press and hold the Power key and Volume down key for ten seconds.
  3. Release the power key while holding down the volume key.
  4. Next press the power button again.
  5. After these actions, the Factory Reset menu will appear on the screen.

    Type 1:

    Android system recovery Type 1 LG X420QM6(LMX420QM6) aka LG K40

    Type 2:

    Android system recovery Type 2 LG X420QM6(LMX420QM6) aka LG K40

  6. Use the Power key and Volume key to confirm the process.
  7. The hard reset is completed now.
  8. As a result of these actions, the memory of your phone cannot be restored.

How to Factory Reset through menu on LG X420QM6(LMX420QM6) aka LG K40 ?

  1. Open the Main Menu.
  2. Go to "Settings".
  3. In Settings choose "General".

    Menu LG X420QM6(LMX420QM6) aka LG K40

  4. In General select "Backup & Reset".

    Backup & Reset LG X420QM6(LMX420QM6) aka LG K40

  5. Next, clik on "Reset Phone".

    Reset device LG X420QM6(LMX420QM6) aka LG K40

  6. Confirm by clicking  "Erase Everything".

    Erase everything LG X420QM6(LMX420QM6) aka LG K40

  7. Finally, press "OK".

    Reset LG X420QM6(LMX420QM6) aka LG K40

  8. The hard reset is completed now. 
  9. As a result of these actions, the memory of your phone can not be restored.

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