I've tried so many apps to conserve battery life but none of them has helped. So I decided to restore my phone and comitted to myself not to touch any of the settings and surprisingly I have seen better battery life by letting the phone do its thing. May sound weird for all of yah but I think its all mentally. The more you setup your phone to the customization of getting better battery life, when you use it and see the battery drain fast it just brings stress. I don't know just my take in it.