My battery door wont fit perfectly to the back. So it makes noises when i press the edges. Ordered a new battery door and hope this will fix this.
But there are and i think always will be two problems with every Z10: The loose NFC contacts are just plain stupid and unnecessary. Also the sound the camera makes when you tap it (or you lay your Z10 on a table). It sounds like loose parts inside the camera. It just lowers the haptic perception.
Still the best phone i ever owned :)
EDIT: I got a new battery door from etradesupply.com. Now everything is just perfect (besides the loose camera sound). I love this phone !!!