This is done by many users, and we have seen many forums and comments on social media where users suggests to exit/quit background apps to save battery life. Most of the users do this, but it has been clarified by Apple now.
An Apple user sent an email to Tim Cook asking his personal opinion if he quits background apps to save his iPhone’s battery life. Tim Cook didn’t reply the email himself, but iOS chief Craig Federighi did. He just answered No, and No.
Quitting app is something we do by pressing home button twice (or by tapping little harder on the edge of iPhone 6s or 6s Plus), and swiping each app up to exit. Don’t get confused about Force quit and quit, because both are almost same. Apps in iPhone don’t really have a button to quit, so we always do this way.
Many users may argue about this answer, but there was no further explanation. Apple has already mentioned in their website long time back, that we should only quit apps when it’s not responding or freezes.
Apple mentioned the following in with regard to quitting apps
Generally, there’s no need to force an app to close unless it’s unresponsive. When you press the Home button two times quickly, the recently used apps that appear aren’t open. They’re in an efficient standby mode to help you navigate and multitask.
So they have clearly mentioned in black and white that apps we see in the background while pressing home button twice, are not actually running, but they are in standby mode to make our life easy, and we can navigate to the app quickly. If you don’t think so, you can make a test. iPhone 6 has just 1GB RAM, how many apps you think it can run in the background? I have tested, and launched all the iPhone apps including games, social media apps, stock apps and some other apps, but found no lag, no issue, because those in the background are in standby mode. Try it yourself.
How to save Battery Life in iOS devices (iPhone, iPad or iPod Touch)
Apple also has an official article on their website how to save battery life on your iOS devices. According to the Apple’s article you can do following to boost battery life on your iPhone, iPad or iPod touch;
- Always use the latest updates
- Keep the brightness in Automatic mode or adjust it, and use WiFi rather than Cellular data (if available)
- Turning on Low Power Mode in iOS 9 also improves the battery life, but it stops most of the apps to have background activity. Low Power Mode can be turned on from Settings — Battery
- Check the apps that usage more battery power (Settings –> Battery). If you see an app, ex: Facebook is consuming so much battery, you can stop this app to get refreshed in the background from Settings –> General –> Background App Refresh
- GPS (Location) consumes so much power, and the apps those use location also get refreshed in the Background, and keep checking your location. If you are not using Map, you can turn off location from Settings –> Privacy –> Locations Services. It can be turned on manually whenever you need
- If you see that Home and Lock screen is consuming more power, that probably means your display hardly sleeps, because some apps keep awaking the display by Push Notifications. You can turn off Push Notification of any app from Settings –> Notifications
- If you are in a area where you find no network bar or it comes intermittently, your battery will drain fast. iPhone or iPad will keep searching network now and then. So in such situation, you can turn on Airplane mode, but make sure you are not expecting any important calls, because all incoming and outgoing calls will be stopped