I only just recently bought my z3 compact, and then upgraded the software to 5.1.1 The first three weeks, the battery lasted for 2-3 days. Now it only lasts for 1 day. With hard earned money as a university student, I finally got myself to buy this phone as a present for myself after having used the original xperia z, and after a successful surgery too. I'm actually heart broken that this update has destroyed my battery usage. Please help us downgrade to 5.0.2.
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