Operating systems in smart phones

Many operating systems are utilizing by Smart Mobile Phone manufacturer companies these days like symbian Operating system, Blackberry Operating system, iOS, Windows mobile OS and Android. Biggest selling Operating system is Symbian Operating System.

Symbian OS is Operating System developed by Nokia Corporation for its smart phones and mobile devices. In 2008 Symbian software limited was taken over by Nokia and a new organization symbian foundation was formed.Symbian system was designed taken in to account that security and integrity of users data is most important, recourses are scares so should properly utilized and users time should not be wasted. To follow this symbian operating system uses a microkernel, uses a request and callback approach and maintains distinction between engine and users interface.Symbian is designed, taken in to account compatibility with other devices especially media file systems that are removable.Symbian uses a reference user interface named as “TechView”. It provides a strong basis for customisation and provides for the environment in which example code and symbian test runs.

Android Mobile Operating system was developed by Google and it is based upon modified version of Linux kernel .It was developed by a firm Android inc. to which Google purchased later. Android has a large community of developers that writes Application Programs or Apps.Currently there are over 70000 apps are available for the android. Founding of Open Handset Alliance, a consortium of 78 Hardware, Software ant Telecom Companies was taken place on 5 November, 2007 to advance the open standards for Mobile Phones. Most of android code was released by Google under the Apache Licence.Software stack of Android Operating System contains Java applications that runs on Java based application framework that is object oriented.

BlackBerry OS was developed by Research In Motion or RIM for its blackberry line of handheld devices and smartphones.Blackberry OS supports for specialized input devices and adopted by RIM in its smartphones like trackball,trackwheel,trackpad and touchscreen. iOS is the mobile operating system developed by Apple for its iPhone. Apple does not allow iOS to run on the 3rd party hardware. User interface of Apple is based on utilization of multi-touch gestures and direct manipulation.