I did a non destructive update to 10.3.0.1154 from 10.3.1054. I was experiencing battery drain for the last two weeks or so. By mid day my z30 would be at 35%, and by 7 at night I was in need of recharge, I did a backup and clean install. The issue went, its almost 6 and I have 74% left. Took it off the charger in the morning. ..... just pointing out my experience
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