Brought my N4 when they came back in stock, last week, it arrived on Friday, had no problems, today I was playing Temple Run 2, phone got very hot so i quit the game then i noticed one hairline crack on the back, after more use later on the same thing happened, and then repeated itself again, i now have 3 cracks on the back of my panel without dropping it once! Called up LG and they said its been reported a lot of times but they're not treating it as a common fault so it's not under warranty, and was told to call Google, after struggling to give my details to the caller i was then put on hold for ages, where i eventually gave up waiting. Disappointed in the N4 build faults such as the ear piece constantly making interference noises.