Remember the melted Samsung Galaxy S III that surfaced in an Irish forum a few weeks ago. Samsung said they were looking into it and, along with a third party investigation, have decided it occurred as a result of "external energy" being applied to the device, not anything from within the phone itself. The damage is apparently consistent with the phone going in the microwave. The original poster dillo2k10 has posted an update on Boards.ie, indicating it was a mistake by someone else in an attempt to recover the phone after it got wet.
Engadget , Samsung finds exploding Galaxy S III was due to 'external source', owner says it was a 'mistake', Samsung finds exploding Galaxy S III was due to 'external source', owner says it was a 'mistake'