Ios App Background Service

As of ios 7 applications can also register to update content in the background using background fetch or remote notifications.
Ios app background service. Opportunistic background tasks preserve battery life by running background tasks in opportunistic chunks when the device is awake for other processing. Largest interval to prevent fetch operations. This notification can be received while the application is in the background.
Background fetch refresh an application from the background at system determined. Use the ios application level backgroundfetch event to monitor when the application receives a notification from ios that it can initiate a background download. Many times the background transfer service is synonymous with a new api introduced in ios 7 the nsurlsession.
Background transfer service reliably upload and download files regardless of network status or file size. For example it is what allows dropbox to sync files to a device in the background until the sync is finished. Background transfer services is an api that was introduced in ios 7 that allows apps to continue their networking requests e g.
Downloading or uploading in the background after the app has been suspended or terminated.