Download Tesla Background App Refresh Background. What is the app refresh used for? I'm not even getting a tone when a message comes in like the @waynekwal:

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The background app refresh enables ios apps to check for information in the background. What is the app refresh used for? All the news and social apps have push notifications from the server, so i get info regardless of whether the app is refreshing in the background.

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Where i am going to implement completion handler and how? Background app refresh allows suspended apps to check for updates and new content while they're running in the background. But sometimes you want to cut back on power and data usage. A new study reveals that many ios apps, including the washington post's own very popular news app, use background app refresh.