Those German guys ran over this phone with a car and it survived - I can't imagine how this happened - sorry dude
People here that feel sorry for the OP, should stop doing so...
Don't get me wrong tho, you should be worried about your own device. There were numerous reports of the glass suddenly breaking, I really don't think that that these incidents are because all of these people weren't careful enough. What if all of these people with cracked glass were careful enough with their phones? Could it really be a heat issue? Or maybe a manufacturing error. Until we know the reason we all should be extra careful.
The people with cracked glass should report if they still had the anti shatter sheet and/or a case just so that we can narrow down some things for ourselves.
One note about the heat being the probable cause: The phone needs to become REALLY REALLY hot before it will break just like that. Lets just put the phone in our pocket for this example, the phone would/could reach a temperature of about 40C? (About the same as our body temperature)
But when the phone becomes hot because of heavy usage it becomes warmer then that 40C doesn't it? The only difference is that when the phone is in your pocket the entire phone gets hot, @ heavy usage only the part near the processor becomes hot. So there are really some things we need to think about and we should take these reports really serious, specially if Sony keeps waving us off that it's a user error.
(The reason why I chose the pocket example is because someone glass cracked while he removed the phone from his pocket)
This can happen to everybody ..lets be more kind to the OPbad luck, use your iphone and don't come back to android please![]()