How to get better idle battery life ?
So i have had my S4 for about 2 weeks now. It is so much better than my old HTC in every possible way. The battery for normal usage is also very good. I can play games for 5-6 hours or web browsing for 8-9 hours. I have no complaint there. Just the idle battery life is bugging me. It always seems to be too much for such a big battery.
Last night, i charged to 100% and went to bed. I turned off everything ( 4G,wifi, sync, NFC, etc ) and put it in both flight mode and power saving mode. After 8 hours it went down to 92%. It is definitely not super. I would expect a drop of 1-2% in such an extreme power saving mode. If i let it idle like a normal person would, the battery would go down to 85% or something overnight. My old HTC idles better than this even with much crappier battery which normally dies after max 2 hours of web browsing.
And I'm on Stock Samsung. So please give me some information on how to troubleshoot this problem? Maybe custom roms can help because my HTC is on custom roms. Or the Samsung's loads of bloatwares are the culprits?
Any tips/tricks/experience is appreciated. Thanks in advance.