Background App Refresh is a feature on iPhones and iPads that allows apps to update their content in the background, even when they are not actively being used. This feature is designed to keep apps up-to-date and ready to launch with the freshest content, so that they open faster and with the latest information.
When Background App Refresh is enabled, suspended apps can check for updates and new content. However, this feature can also use up battery life and data, as apps are constantly refreshing their content.
To turn off Background App Refresh, go to the "General" menu in the Settings app. From there, you can turn off background refreshing for every app or just specific apps. It is important to note that turning off Background App Refresh may impact the speed and performance of some apps, as they will not be able to update their content in the background.
