ios android app life cycle

here is diagram image for understand Life Cycle (iPhone / Android)

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Edit: Here is the more detailed information from Apple Docs.

Part 1:

Part 2:

Reference

http://stackoverflow.com/questions/6519847/what-is-the-life-cycle-of-an-iphone-application

https://developer.apple.com/library/ios/documentation/iPhone/Conceptual/iPhoneOSProgrammingGuide/TheAppLifeCycle/TheAppLifeCycle.html