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The R89SDK may track the advertisement session when the application is in the background. To enable the background mode do so the SDK internally uses the BgTaskScheduler and BGAppRefreshTask from the iOS framework. Before enabling the background mode add the “Background Modes“ capability to your project.
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After adding the “Background Modes“ capability enable the “Background fetch“ and “Background processing“ modes.
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Next add following task identifier to the Info.plist