“Developer Options” is found in “Settings” on LG K40 but its kept hidden by default. The options in this menu are useful for developers. It has got an extensive list of options that can do some harm if misused. That’s why its kept hidden.
However, it’s very easy to enable. Without the Developer Options, we cannot turn on USB Debugging to connect out K40 in ADB / Fastboot Mode. For writing, ADB commands the phone should be connected to the PC with USB Debugging in the enabled state.
In this post, we are going to learn, How to enable Developer Options and USB Debugging with the help of the below video and screenshots –
How to turn on Developer Options & USB Debugging on LG K40
On your LG K40 Home Screen, swipe right and you would see the “Settings” icon. Tap on it to open.
In Settings, select the “General” tab and scroll down to the bottom of the page.
Choose the 2nd last option i.e. “About Phone”.
On the About Phone page, tap “Software Info” as shown above.