App life cycle in iPhone?



iPhone 2G/3G app life cycle 

(START)
- didFinshLunchWithOptions
- applicationDidBecomeActive
(HOME PRESSED)
- applicationDidEnterBackground
- appWillTerminate

iPad / iPhone 4 app lifecycle
(START)
- didFinshLunchWithOptions
- applicationDidBecomeActive
(HOME PRESSED)
- appWillResignActive 
- applicationDidEnterBackground
(RESART APP IN THE "TASKBAR") 
- appWillEnterForeGround 
- appDidBecomeActive 

Why iPhone apps are popular?

   Give our business a whole new way of transacting business for millions of users.
iPhones are the market leaders in the smart phone segment. The iPhone has become a great device to surf the internet, play games, interact with social networks and transact business.

What is an iPhone app?


 An iPhone app is a program that runs on our iPhone/iPod Touch. It enables us to accomplish a certain task. They could be utility apps, games, enterprise apps, entertainment apps, apps to access our bank account etc.