I am so angry about the same problem with the battery. Sony's support is just a waste of time. My Xperia Z1 also have an issue with vibration as well as the battery. Both are issues widely shared (the first, from its manufacturing). But when I tried to get help by chat support, they just kept telling me I had to fix it with PCC. Obviously it didn't work. But, they gave me the same instructions again, even when I had already told them it didn't work!! How disappointing... I will tell all the people I know it's better to get away from Sony's smartphones and their unuseful support. Thank you for the place for catharsis. Good luck! P.S.: I am sorry if my English is as bad as I think it is.
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