To achieve this, the G6's display has an 18:9 aspect ratio, rather than the 16:9 used by most handsets.
It means that when viewed in landscape mode, the screen appears wider than normal.
LG has acknowledged that last year's G5 missed its sales targets. One analyst said the change in strategy was wise.
The new device was unveiled in Barcelona ahead of the opening of the Mobile World Congress (MWC) trade show.
