It certainly won’t surprise anyone to hear that a smartphone’s battery burst or caught fire. There have been a lot of those incidents, and the device doesn’t necessarily have to be old to suffer such a fate. Last year several Galaxy S4 units either “exploded” or caught fire due to various issues. The latest incident is a bit unusual, though it has happened in the past as well. The iPhone 3GS seen above belongs to a writer at the Letem Svetem Applem website, and as you can clearly see, the iPhone 3GS battery balloons right up to the verge of bursting, but fortunately doesn’t, the possibility of physical harm in such cases always exists.