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Neo V with 4.0 ICS update — battery problem

My Sony Xperia Neo V battery performance has gone down very badly after upgrading to ICS. It mainly happens when I have my mobile data/internet turned on. How can I improve the battery performance?
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164 views

Poor battery after update to Android 4.0.3

I updated my non-rooted Samsung Galaxy S2 from 2.3.5 to 4.0.3. Now, I recognize a significant decrease in battery lifetime. Any idea what may cause it and how to get around it?