A long time ago when this thread was in its early stages, Dariusz777 post some things to try. I tried everything on his list with a few issues so I have since elected to do only the things that really affect battery life. Here is what I have done, and it seems to be working for me. I use to loose %30 battery with 2 hours of taking my phone off the charger, wich by the way is still less than a year old. Iphone 4s try this.
1. Bluetooth Off
2. General
- Accessibility > Reduce motion ON
- Background App Refresh, total OFF
- Wallpaper - ONLY STILLS no animated walls allowed :-)
- Auto Brightnes OFF (control center should be sufficient)
5. Privacy
- Privacy > Location Services > System Services TURN EVERYTHING HERE OFF especially FREQUENT LOCATIONS
Standard location services for all aplications can remain active
- Privacy > Advertising > Limit Ad Tracking, switch to ON
6. iTunes & App Store
Turn OFF automatic Updates! (this pull son the battery to to the constant need to be online checking for updates on the app store.)
If you have an Iphone 5c, or 5s most of this will not affect your battery life those phones have a differant battery designed to handle the workload. If you newer phone is having and issue, then take it to your apple retailer, or carrier to find out if it is a faulty battery..