[mih]

Looking around on forums like XDA, one sees that LG typically has different models depending on the market. The tech specs are identical, but it has more to do with carrier branding and lockdown. For instance, in markets such as the EU, LG G4 shipped with an unlockable bootloader while in the US and Asia it was not. Workarounds and custom ROMs exist, but you also see plenty of stories about bricked phones. Put simply LG simply does not have the friendliest attitude towards developers, as opposed to say HTC. They are compelled to release GPL source code for the device, but getting it to run on your device takes a bit of work.

[voltagex_]

Sigh. I wish I could love the Nexus 5X, but it just didn't represent a big enough jump to justify a 2x price difference from the 5 (in Australia).

I'm not sure who "lg-devs" are, but they seem to have a full source tree for the G4 at https://github.com/lg-devs/android_device_lge_h811. No idea if it boots, though.