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Almost all samsung roms as of now has cell standby battery drain. But its understood that its a miscalculation of power used rather than the actual power usage.
This fix the wrong reporting of cell stand by usage to some extent.
You can see this method in http://letsdroid.net/1341/android-os/galaxy-s-iii-cell-standby-power-drain-issue-identified/
*images not mine*
*images show before and after fix*