Overview LG X420MM(LMX420MM) aka LG K40

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Specification LG X420MM(LMX420MM) aka LG K40

Model and Features
Model LG X420MM
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 1.8GHz Snapdragon SDM450
CPU Cores Octa-core
RAM Memory 2GB
Internal Storage 32GB
External Storage microSD, up to 2 TB
Network and Data
Number of sim slots 1 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 X420MM(LMX420MM) aka LG K40

LG Phone firmwares regions descriptions
Region File name OS Size Date Downloads
MTD
  • United States
 X420MM10g_00_MPCS_US_OP_0808.kdz Android 9 Pie 2.72 GiB 2019-08-29 547 time(s)
MTD
  • United States
 X420MM10k_00_MPCS_US_OP_0923.kdz Android 9 Pie 2.77 GiB 2019-10-10 81 time(s)
MTD
  • United States
 X420MM10n_00_MPCS_US_OP_1129.kdz Android 9 Pie 2.77 GiB 2019-12-26 30 time(s)
MTD
  • United States
 X420MM10o_00_MPCS_US_OP_0205.kdz Android 9 Pie 2.77 GiB 2020-02-27 62 time(s)
MTD
  • United States
 X420MM10p_00_MPCS_US_OP_0408.kdz Android 9 Pie 2.77 GiB 2020-05-21 35 time(s)
MTD
  • United States
 X420MM10q_00_MPCS_US_OP_0619.kdz Android 9 Pie 2.81 GiB 2020-07-16 23 time(s)
MTD
  • United States
 X420MM10r_00_MPCS_US_OP_0805.kdz Android 9 Pie 2.81 GiB 2020-09-03 24 time(s)
MTD
  • United States
 X420MM10s_01_MPCS_US_OP_1031.kdz Android 9 Pie 2.81 GiB 2020-11-19 11 time(s)
MTD
  • United States
 X420MM10t_00_MPCS_US_OP_1120.kdz Android 9 Pie 2.81 GiB 2020-12-24 21 time(s)
MTD
  • United States
 X420MM10u_00_MPCS_US_OP_0118.kdz Android 9 Pie 2.81 GiB 2021-02-11 23 time(s)
MTD
  • United States
 X420MM10v_00_MPCS_US_OP_0305.kdz Android 9 Pie 2.81 GiB 2021-04-01 9 time(s)
MTD
  • United States
 X420MM10w_00_MPCS_US_OP_0422.kdz Android 9 Pie 2.81 GiB 2021-06-03 42 time(s)
MTK
  • United States
 X420MM10g_00_MPCS_US_OP_0808.kdz Android 9 Pie 2.72 GiB 2019-08-29 58 time(s)
MTK
  • United States
 X420MM10k_00_MPCS_US_OP_0923.kdz Android 9 Pie 2.77 GiB 2019-10-10 38 time(s)
MTK
  • United States
 X420MM10n_00_MPCS_US_OP_1129.kdz Android 9 Pie 2.77 GiB 2019-12-26 44 time(s)
MTK
  • United States
 X420MM10o_00_MPCS_US_OP_0205.kdz Android 9 Pie 2.77 GiB 2020-02-27 17 time(s)
MTK
  • United States
 X420MM10p_00_MPCS_US_OP_0408.kdz Android 9 Pie 2.77 GiB 2020-05-21 10 time(s)
MTK
  • United States
 X420MM10q_00_MPCS_US_OP_0619.kdz Android 9 Pie 2.81 GiB 2020-07-16 7 time(s)
MTK
  • United States
 X420MM10r_00_MPCS_US_OP_0805.kdz Android 9 Pie 2.81 GiB 2020-09-03 12 time(s)
MTK
  • United States
 X420MM10s_01_MPCS_US_OP_1031.kdz Android 9 Pie 2.81 GiB 2020-11-19 1 time(s)
MTK
  • United States
 X420MM10t_00_MPCS_US_OP_1120.kdz Android 9 Pie 2.81 GiB 2020-12-24 21 time(s)
MTK
  • United States
 X420MM10u_00_MPCS_US_OP_0118.kdz Android 9 Pie 2.81 GiB 2021-02-11 10 time(s)
MTK
  • United States
 X420MM10v_00_MPCS_US_OP_0305.kdz Android 9 Pie 2.81 GiB 2021-04-01 8 time(s)
MTK
  • United States
 X420MM10w_00_MPCS_US_OP_0422.kdz Android 9 Pie 2.81 GiB 2021-06-03 23 time(s)
MTP
  • United States
 X420MM10g_00_MPCS_US_OP_0808.kdz Android 9 Pie 2.72 GiB 2019-08-29 81 time(s)
MTP
  • United States
 X420MM10k_00_MPCS_US_OP_0923.kdz Android 9 Pie 2.77 GiB 2019-10-09 98 time(s)
MTP
  • United States
 X420MM10n_00_MPCS_US_OP_1129.kdz Android 9 Pie 2.77 GiB 2019-12-25 22 time(s)
MTP
  • United States
 X420MM10o_00_MPCS_US_OP_0205.kdz Android 9 Pie 2.77 GiB 2020-02-27 36 time(s)
MTP
  • United States
 X420MM10p_00_MPCS_US_OP_0408.kdz Android 9 Pie 2.77 GiB 2020-05-21 24 time(s)
MTP
  • United States
 X420MM10q_00_MPCS_US_OP_0619.kdz Android 9 Pie 2.81 GiB 2020-07-16 9 time(s)
MTP
  • United States
 X420MM10r_00_MPCS_US_OP_0805.kdz Android 9 Pie 2.81 GiB 2020-08-29 30 time(s)
MTP
  • United States
 X420MM10s_01_MPCS_US_OP_1031.kdz Android 9 Pie 2.81 GiB 2020-11-19 29 time(s)
MTP
  • United States
 X420MM10t_00_MPCS_US_OP_1120.kdz Android 9 Pie 2.81 GiB 2020-12-23 20 time(s)
MTP
  • United States
 X420MM10u_00_MPCS_US_OP_0118.kdz Android 9 Pie 2.81 GiB 2021-02-11 28 time(s)
MTP
  • United States
 X420MM10v_00_MPCS_US_OP_0305.kdz Android 9 Pie 2.81 GiB 2021-04-01 29 time(s)
MTP
  • United States
 X420MM10w_00_MPCS_US_OP_0422.kdz Android 9 Pie 2.81 GiB 2021-06-03 128 time(s)

Articles LG X420MM(LMX420MM) aka LG K40

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