The LG G3 has a menu button; here's where to find it

LG swapped out the menu button on this year's phone but still left access should you need it

Like Samsung and the Galaxy S5 before it, LG has swapped out the permanent menu button for the more "normal" recent apps switcher on the G3. In 2014 there really shouldn't be any actual need for a menu button in applications, but like Samsung, LG has left the menu button lurking on the G3 should you ever need it. There's just no mention of where it actually is.

source: androidcentral