Dostałem odpowiedź od supportu.
Thank you for contacting Sony Xperia Support.
With regards to your inquiry, first of all we are sorry to hear that you experience issues with your mobile phone Sony Xperia™ Z3 Compact.
Due to the fact that this issue is difficult to assess through e-mail correspondence, in this situation we would like to propose you to check the device at our authorized service center, where skilled technicians will be able to determine if the phone meets the requirements of the Manufacturer, and ensure you with support in accordance with the guidelines of the Sony Mobile and Limited Warranty our company:
W-support
Udało mi się zrobić fotkę tych plam, jakość jest średnia ale wszystko widać.
Ostatnie pytanie brzmi, czy iść z telefonem do operatora, u którego brałem tel? Czy lepiej odwiedzić Sony Center bo mam jeden punkt u siebie w mieście.