iOS 7 is all kinds of sexy, but with a slew of fancy new features comes more strain on the ever-important statistic of battery life. iOS 7 is compatible with iPhone 4 or later (though not all features are supported on older devices), so if you’re upgrading your current device to the new operating system, there’s a good chance you could see a noticeable decrease in battery life. If you’re looking to avoid any pitfalls in the battery department, here are a few settings you can tweak to keep iOS 7 from sucking your iPhone’s life like an evil, software vampire. iOS 7 lets certain apps refresh even when you’re not using them, which is both super convenient and a big problem for users who want the most out of their batteries. Disabling Background Refresh entirely would be your best bet, but even disabling the feature on just a few apps should help your device remain lively for a bit longer.