Right as I walked in the building this morning I smelled smoke, and my co worker told me to come check this out. He said he was holding his phone this morning and it started getting really hot. He said that as he was walking out of his office it started smoking and became so hot he couldn't hold it, and dropped it where these pictures were taken. He said the phone had visible flames come out of it and it popped the case open as seen in the photos. Pretty crazy. Phone is a 16gb iPhone 4 on ATT, probably two years old. Any ideas on why it would randomly do this?