3.
Background location – application is notified of location
changes Push notifications 5.
Local notifications – application schedules local notifications to be delivered at a predetermined time Task completion – application asks the system for extra time to complete a given task Fast app switching – application does not execute any code and maybe removed from memory at anytime In iOS 5, three new background
APIs were introduced 1.
Newsstand – application can download content in the background to be ready for the user External Accessory – application communicates with an external accessory and shares data at regular intervals Bluetooth Accessory – application communicates with a bluetooth accessory and shares
data at regular intervals[90]
In iOS 7, Apple introduced
anew multitasking feature, providing all apps with the ability to perform background updates. This feature prefers to update the user's most frequently used apps and prefers to use WiFi networks
over a cellular network, without markedly reducing the device's battery life.
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