Samsung Galaxy S2 - battery problem

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http://androidforums.com – Hello all, My phone seems to have developed a strange battery drain problem. Sometimes, I have to restart my phone as it can lose signal and not return without restart. When it starts up again, the battery has drained to around 15%, when before the restart it was on 50%-60%. The last time this happened, the charge even started to go up! Has anyone experienced this before? I know the simple solution is to not restart my phone, but when it loses signal it's easier to restart to get it going again. I did have an issue several weeks ago where it wouldn't charge, but I uninstalled an app and (General)