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iPhone Interview Questions

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  • IPhone is a combination of internet and multimedia enabled smart phone developed by Apple Inc.
  • iPhone functions as a camera phone, including text messaging, and visual voice mail
  • iPhone is a portable media player that resembles a video iPod
  • It has user interface that is built around the multi-touch screen including virtual keyboard.
  • App Store , which launched in the mid 2008 has over 1,00,000 applications with functionalities including games, references, GPS navigation, advertising, television shows, films, reference, celebrities.  

  • Video: Videos can be edited, shared. High quality VGA video can be shot in portrait or landscape.
  • 3 Megapixel Camera: Still photos with greater quality can be taken
  • Voice control: It recognizes the names in contacts and recognizes the music on iPod.
  • Compass: iPhone 3GS has built-in digital compass, used to point the way.
  • Internet Tethering: Internet surfing can be done from anywhere. A 3G connection can be shared on Iphon3 with Mac notebook or laptop..  

iPhone OS runs on iPhone and iPod touch devices.

Hardware devices are managed by iPhone OS and provides the technologies needed for implementing native applications on the phone.

The OS ships with several system applications such as Mail, Safari, Phone, which provide standard services to the user.  

iPhone SDK is available with tools and interfaces needed for developing, installing and running custom native applications.

Native applications are built using the iPhone OS’s system frameworks and Objective-C language and run directly on iPhone OS.

Native applications are installed physically on a device and can run in presence or absence of network connection.  

It is similar to MacOS X architecture

It acts as an intermediary between the iPhone and iPod hardware an the appearing applications on the screen

The user created applications never interact directly with the appropriate drivers, which protects the user applications from changes to the hardware.  

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