Oh my! What is the unit of your xperia? Mine is xperia z1. Its just last about 4 hours,data enabled.. Facebook, instagram,browsing.. R u sure its 48 hours?
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I manage to get to the end of the day with about 25% battery life left after heavy use. It depemds if you are a big media user or not. Theres also a few settings you can adjust to extend your battery life
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