I bricked my phone. Fully bricked, no 3button or anything. screen blank no matter what i did etc etc
took it to optus (it was rooted so out of warranty apparently, but they weren't to know that) and said it just wouldn't turn on. They didn't even ask how it happened (had planned to say tried to update it with kies and it just wouldn't turn on) anyways they were just like 'hmmm yeah... not turning on, that's manufacturers problem. We'll send it to them and they'll have a look. Sign this and this and this.'
less than a week later i got a call from them and had my phone back working like nothing happened. All apps and data still there.