LG K40 comes in 4 different variants. It’s available for MetroPCS, T-Mobile & AT&T. The 4th one is the Factory Unlocked Version.

There are 2 different Hidden Menus available for the MetroPCS/T-Mobile variant. The rest of the K40 variants have a single Hidden Menu. In this post, we’re going to unhide the Secret Menus and explore them in great detail as per the video and screenshots below –

LG K40 Hidden Menu Codes – MetroPCS lmx420mm / AT&T lmx420AS / T-Mobile lmx420tm / Factory Unlocked lmx420qn

lg k40 hidden menu device test

The first Hidden Menu code is common for all the K40 variants and this is the Main Hidden Menu with lots of troubleshooting options in the form of Device Tests.

To get access to this Hidden Menu open your K40 phone dialer and dial *#546368#*420#

The 4 options in the Hidden Menu can be seen in the above screenshot. They are “Device Test”, “ORT Test”, “SVC Menu” & “Field Test”. Let’s explore them one by one using the below screenshots –

1. Device Test – LG K40 Hidden Menu

Pages: 1 2