Xperia Z3 :: Phone Vibrating Constantly And Opening Camera Alone

I live in Curitiba, Paraná. I've been complaining about a Sony Xperia smartphone Z3. I purchased 15 days. The same has been exposed to splashing water (shower), which is acceptable because the equipment is designed for these situations splashes and even submersion, to its limits of course, had the same problems on the 09/08/15 03: 29 am began an endless vibration, even turning off the machine vibration remained and after endless vibration, 05:00 am it stopped and did not return to vibrate, but began another breakdown, celebrates open the camera unintentionally, the which it was in this condition when I got to this point of the complaint, (5:15 am) and so far did not return open.

I believe it is a problem in sealing the camera button, as it was for him that the problem manifested itself. I now believe that if there was water into the unit, the motherboard was damaged, so need immediate replacement device, for me the device is an essential commodity. I look forward soon return Sony's what should I do in this situation, since the device has addiction but not stopped operating (for now).