“It’s been possible for a while to run some apps in the background on an iPhone and other iOS devices but with iOS 7, Apple extended that privilege to a broader range of apps,” Larry Magid writes for Forbes. “That can be good news — if you want an app downloading the latest stock prices, weather or other information, or processing or sending out data, or tracking your location while it’s not in the foreground — but it can also wreak havoc on battery life.”
“Fortunately, there are a few things you can do. For one, you can disallow specific apps to refresh their content in the background by selecting Settings>General>Background App Refresh,” Magid writes. “That brings up a control panel. Look at each app and decide whether it really needs to be refreshing content in the background.”
Magid writes, “As always there are other tricks to save power…”
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“Turn off AirDrop except when needed. AirDrop is now available for iPhone 5, 5s, and 5c devices running iOS 7, allowing you to share files and photos with friends and colleagues over the air when they are in close proximity. But its use can take a heavy toll on your battery, particularly when AirDrop is in ‘discoverable’ mode,” Zack Whittaker writes for ZDNet. “Simply swipe up from your home screen to bring up the Control Center, then tap AirDrop. Select Off when you’re not using it.”
“Disable auto app updates; manually update at your convenience,” Whittaker writes. “iOS 7 will now update your apps in the background. As you’re connected to Wi-Fi networks (or the cellular network), your apps will remain up to date without bugging you. But this consumes data and power, and should be restricted for when you’re free to plug in your iPhone to charge. Tap the Settings icon, scroll down to iTunes & App Store and turn off the Updates and Apps settings. Another quick power (and data) saving tip: You can allow updates when you’re on Wi-Fi only by deselecting Use Cellular Data at the same time.”
22 more tips in the full article here.