Q: Need help understanding Background App Refresh
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Jan 9, 2015 12:03 PMby SergZak,Have a look at this page:
Understand multitasking and background activity on your iPhone, iPad, or iPod touch - Apple Support
It may help you better understand iOS's Background App Refresh
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Jan 9, 2015 12:07 PMby gldoorii,Thanks, I understand it better now, but still don't understand why it doesnt work on my phone.
"Because of multitasking, you can switch quickly between apps and see updated content when you open or return to your apps."
For me, when it's turned on and I return to an app, it gives me a white screen and reloads everything to the beginning. Even if I switch to another app and then right back.
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Jan 9, 2015 12:18 PMby SergZak,This is the key phrase from that page: "Some apps can continue to run in the background. You can allow these apps to refresh themselves by turning on Background App Refresh. This settings lets apps check for new content and download updates, or retrieve updated content in the background when they receive push notifications."
Only some apps can retrieve updated data through background app refresh (BAR). *All* apps can enter multitasking and be opened quickly...but this is NOT the idea behind BAR. BAR capable apps have the additional ability to refresh their data & content if they are enabled to do so. Just because an app is in multitasking, it doesn't mean it's capable of background app refresh.
If that doesn't clarify things, check out the following page:
http://www.scottyloveless.com/blog/2014/background-app-refresh-explained
