So I just went from ridiculous battery life to LUDICROUS battery life by trying a "you're using it wrong" trial and error strategy. Check my screenshot below and I've hit 9 hours of usage on half the battery (that's on track for 18 hours of usage on a full drain). I now get more usage on half my battery than most people get on a full battery. This is an iPhone 6 128gb version. It is NOT the IPhone 6 Plus. I am on iOS 8.1 with a jailbreak and tweaks to save battery life explained in my most recent posts.
My strategy was simple. Each day I would look at my usage and make a note of what app was at the top of the list using the most battery. For myself this was Safari. So the next day I would consciously try to use that app less. Rinse and repeat for the day after. I also started trying not to hit the home screen button as the home screen has been a battery drain culprit. Instead I would double press to get the multitask screen instead and as you can see in my screenshot that lead to very low home screen usage.
Finally I tested a few things with leaving apps running. Before I used to quit every app using the upwards swipe from multitasking screen but noticed that battery life got better when I stopped doing this. So next I tried leaving all apps running but noticed that it wasn't as good for the battery as only leaving a few of my most recently used apps running and manually quitting down the rest. Eventually I found that for myself leaving about 5 of my most recently used apps running and shutting everything else down with the upward swipe gave me the best battery life.
Other changes I've done that I'm not sure affect battery life have been to install the LockGlyph tweak but it may be coincidence that I installed it when the battery got better through other reasons. Also this screenshot involved me wearing headphones when I listened to my podcasts and music instead of usually playing things through the speaker. Maybe that helped too I'm not sure.
Anyways this was a rather extreme test of battery life. I'll probably end up going back to using Safari the most like usual but it gave me an idea of what apps are the best for battery life (Alien Blue and Tapatalk and Spotify seem amazing for battery).
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