I just started using my brand new Xperia Z2 and plan to stick with it for at least a year and a half. However, I read some disturbing news that the battery might get faulty in less than a year (if I charge it every day) and I won't be able to change it, since it is non-removable. This news got me very disturbed for my phone, as I plan to charge it every day (I am a heavy user). Do you think the battery will last during that time? Thank you.