I have not really seen a decrease in battery usage from stock...although there is a huge decrease from das Bamf remix. Battery life is and will always be an issue until they move forward in battery tech. This is why I try not to let poor battery life bother me...just always have a charger near...lol. I have however found that my browser when clicking a link in an app will open then close right away but after opening again it stays open. Anyone else having this issue?