This is a good counterargument to anyone who says Samsung just copies Apple :D
To be fair, Apple got there first, although I doubt they're proud of it, and probably they were not the absolute first.
A very small number of iPhone 4 (or was it 4S?) had defective batteries which caught fire.
What Samsung can claim an absolute first for, though, is providing replacements which are just as dangerous.
This is a good counterargument to anyone who says Samsung just copies Apple :D