The heat and explosion were so great that it actually burnt a hole through the mattress, which you can see in the image above. Luckily nobody got hurt in the process, and we know some of you guys are thinking that she probably used a third-party charger/battery, or maybe she had the phone under the pillow while it charged (thus generating heat with little room to dissipate).
While we only have the OP’s word, he said that none of this happened and that the phone was just lying on the open bed and that the battery was original. Chances are what this means is that it could simply be a freak accident. After all with the millions of phones produced by LG, it isn’t that much of a stretch to think that there could be a couple of defects that somehow slipped past quality control.
The OP also adds that they have been sharing this story via social media and have reached out to LG to see what they can do about it. LG has yet to issue an official statement or responded to the matter but hopefully we will hear from them soon.