Originally Posted by Qtx

Replied to a message and put it on the table, went to check it 20 minutes later, dead as a dodo.

I can't be sure but it looks like the sudden death bug which usually happen between 150 and 200 days of first using the phone. Mine was 156 or so days old.

There was a software fix in one of the software updates, which I didn't get due to being rooted.

Guessing I talk straight to Samsung as it has a 2 year warranty with them, rather than with Three who the contract is with or the online site I signed up via?