There isn't much information on what caused the explosion, but the victim's paints had to be cut to prevent her from sustaining further damage. If you have a sensitive stomach, you might not want to view the damage in the slideshow below. On the other hand, if blood and guts are your thing, we have a new pin-up for you.
The explosion took place at the girl's place of employment and Samsung Switzerland said that it is investigating and will probably send the phone back to Korea for a an examination.
source: LeMatin (Translated), AndroidBeat via Gizmodo