My iPhone has been eating battery life since last year and it was driving me crazy. Fox News just did a segment on how to check your battery life. When I did, WVU gamely was eating 55% of my battery life for the last 7 days. I have not used the app in the last week and it was not open. I think I found my culprit.
If you want to do the same:
settings>general>usage>battery usage>scroll down and it breaks down by % what is eating your battery.
If you want to do the same:
settings>general>usage>battery usage>scroll down and it breaks down by % what is eating your battery.