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Battery activity On my battery activity it says I use my Roku app for two hours but the background activity is 4 hours. That sounds like a lot for background activity. How can I cut that out? Will closing the app after I finish using it help? I have an iPhone 12 pro. I also have background app refresh off for all my apps. 2065 4 · Closing Apps Why should you close an app only if it’s unresponsive? Doesn’t leaving it open ... More on discussions.apple.com

Even if apps are left running in the background, Samsung’s software will place them in a deep sleep due to inactivity and even, removing permissions if not used within 6 months. A win win for everyone. More on reddit.com

Developer here: when an app goes to the background, it delegates its tasks to the system. The app can only execute in background for a few seconds (finishing a download for example) before the system freeze it. For example, if the app is using location tracking, that’s the system that wakes up the app for a few seconds to update whatever it wants, until the next update. For notifications, that’s the system that receive them, the app is generally not involved. Etc… If the app is following the Apple guidelines and there is no bug in iOS, an app in background should not be able to drain battery. Apple is very strict on that. That’s a big difference with Android, at least in the older release: an app cannot do what I want on iOS. Source: https://developer.apple.com/documentation/backgroundtasks/choosing-background-strategies-for-your-app If your app needs computing resources to complete tasks when it’s not running in the foreground, you can select from many strategies to obtain background runtime. Selecting the right strategies for your app depends on how it functions in the background. The system grants your app a limited amount of time to perform its work once it enters the background. […] Once your work completes, call endBackgroundTask(_:) before the time limit expires so that your app suspends properly. The system terminates your app if you fail to call this method. To preserve battery life and performance, you can schedule backgrounds tasks for periods of low activity, such as overnight when the device charges. […] the system decides the best time to launch your background task. Your app may require short bursts of background time to perform content refresh or other work; […] The system decides the best time to launch your background task, and provides your app up to 30 seconds of background runtime. Background pushes silently wake your app in the background. They don’t display an alert, play a sound, or badge your app’s icon. […] The system decides when to launch the app to download the content. […] your app has up to 30 seconds to complete its work. You get the idea. More on reddit.com