Here's how easy it is to switch to an LG G6 (from an iPhone, or another Android phone)
As you can see for yourself in LG's new videos (embedded below) you can switch from Android handsets (including LG ones) either wirelessly, or with the help of a USB cable. This isn't the case when switching from an iPhone - you can't make the switch wirelessly, so you'll definitely need a cable.
We liked the LG G6 when we reviewed it back in March, so we assume that there are (or there will be) plenty of customers interested in switching to it.
source: LG Mobile (YouTube)