The man claims that he was installing the iOS 12.1 update onto the device when the explosion occurred; that is the update that promised a fix for the so-called beautygate selfie issue.
Mohamadali says that once the update started he plugged the iPhone X into the official Apple charger that came with the phone; it’s unclear if he was using an official Apple cable.
Apple support tweeted to the man “That’s definitely not expected behavior. DM us, so we can look into this with you.”