We've just had a Nexus 4 crack spontaneously as well, after 4 days, no drops or knocks.
It was left charging overnight and was like this when it was picked up. It's continued to get worse - it was still making Rice Krispies noises for several days.
Google agreed on the phone to replace it, but now that we have sent the old one back they say they are going to charge us for repairs so it can be sold as refurbished.
Dealing with Google is frustrating. The phone is answered by Americans who are helpful, but don't understand UK law. Emails are answered by non-native English speakers who aren't helpful and don't understand UK law. At one point they started calling me Alex instead of Andrew and told me to contact Samsung to get my LG Nexus repaired. They also told me to send my correspondence to
legal@google.com because they don't understand the Sales of Goods Act.
We've noticed a few things different between the broken and replacement phone:
- The old phone got very hot (too hot to hold comfortably) a few times, including during charging. Hotter than an iPhone 5. We suspected it was normal - appears not, as we can't get the new one this hot even with intensive games.
- The new phone has a much better battery life.
- The new phone has the two small plastic nubs on the back, and had an IMEI number on the back. The old phone had neither.
There's clearly some phones with a manufacturing defect that causes the backs to be extremely sensitive - the breaking does appear to be spontaneous.
Under Section 14 of the Sale Of Goods Act 1979: Implied terms about quality or fitness, (2B) (e) durability an item of should be of a reasonable quality and "last a reasonable length of time". The Nexus 4 we received doesn't meet this. The burden of proof is on Google to show that the phone was dropped or mistreated, rather than me prove it wasn't. I'm totally willing to take this to small claims court.