Samsung's flagship phone Galaxy S III seems to be suffering from a problem of sudden death. According to this thread on XDA Developers Forum, Samsung smartphones were 'dying' all of a sudden. Users complained that very often they would leave the smartphone to charge overnight and in the morning the device wouldn't start.
According to BGR, the issue appeared to be related to the NAND becoming corrupted and killing off the Galaxy S III’s mainboard, which causes the phone to essentially 'brick' itself. You can check out more on that here.
The issue was also discussed heavily by Reddit users at this thread.
Now it seems Samsung has come out and promised to send an update for fix this issue. Samsung had been replacing phones but a company spokesperson has now told Dutch site Tweakers, "It's only a very limited number of Galaxy S III models with 16GB memory. The cause lies in Samsung in a firmware bug, which can be easily solved by a firmware update.'
Samsung will be releasing an update soon. Previously XDA has reported a serious security hole Samsung S III and Galaxy Note II devices which could have allowed malicious apps to take control of the phones. More on that here.