3. Introduction
An operating system (OS) is an interface between
hardware and user. It manages hardware and
software resources of the system.
An operating system which controls mobile devices is
called Mobile OS. They are simple and deal with the
wireless versions of broadband and local connectivity.
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4. Different types of OS‟s
Mobile OS
Symbian
OS
iPhone OS
RIM
BlackBerry
Windows
Mobile
Linux Palm OS Android
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5. SYMBIAN OS
Symbian OS is a mobile operating system, developed
by Symbian Ltd, in 1997.
It is a mobile operating system (OS) and designed for
Smartphone‟s and currently maintained by
Accenture.
It runs exclusively on ARM processors.
In June 2008, Nokia announced the acquisition of
Symbian Ltd.
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8. It was the most popular smartphone OS across the
world till the end of 2010,untill it was overtaken by
Android, although in some developing
nations, Symbian is still the biggest.
The current form of Symbian is an open-source
platform developed by Symbian Foundation in 2009.
Symbian OS is programmed in C++.
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10. Frameworks and libraries
for constructing a UI.
Includes the basic class
hierarchies for UI
controls.
Other frameworks and
utilities.
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Topmost layer of Symbian
OS, foundation for variant UI
11. Spans the UI Framework
and Application Services
layer.
It defines a platform for
dynamically and securely
deploying optimized,
graphical, networked
applications.
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Java J2ME
MIDP 2.0 and CLDC 1.1
12. It provides support
independent of the
user interface for
applications on
Symbian OS.
Application class
(“technology
specific”) logic.
support for specific
applications
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Generic
Application class specific -
Messaging, browsing
Application specific - Word, Sheet
13. the „middleware‟ layer of
Symbian OS, provides
servers, frameworks, and
libraries that extend the
base-system into a
complete operating
system.
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Generic OS
Services
“Middleware" layer of
Symbian OS, full range of
servers, frameworks, and
libraries which extend the
base system into a complete
OS
Multimedia &
Graphics
Services
Connectivity
Services
14. It includes the File
Server and User Library
Plug-In Framework
which manages all
plug-ins
Central
Repository, DBMS
Cryptographic services
Services for a functional
port
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Lowest level of user-side services,
extends the OS kernel into a useable
(but minimal) system
15. Provides physical and
logical device drivers and
other hardware
abstraction.
Creates and manages the
fundamental OS kernel
abstractions.
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Kernel layer, contains the OS
kernel itself, device
drivers, and similar low-level
components
16. SYMBIAN MOBILE OS VERSION
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Series 60 3rd edition Feature Pack 2
Released on 12 July 2006.
Support for Wi-Fi 802.11, HSDPA.
Symbian^1 (Series 60 5th edition):-
Applications should launch up to 75% faster.
Additionally, SQL support is provided by SQLite.
Symbian^3:-
Released in the year 2010.
Symbian^3 is an improvement over previous S60
5th Edition and features single touch menus in the
user interface, as well as new Symbian OS kernel
with hardware-accelerated graphics.
17. Contd..
Symbian Anna and Symbian Belle:-
Released in the year 2011.
Free-form, differently-sized, live widgets
More home screens
Improved status bar
Modernised navigation
New apps
Informative lock screen
NFC devices
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18. Features
Processes and Threads:
Symbian OS is a multitasking and multithreaded
operating system.
Many processes can run concurrently, can
communicate with each other, and can utilize multiple
threads that run internal to each process.
Common File System support:
Symbian OS organizes access to system storage using a
file system model, just like larger Operating systems.
It has a default file system compatible with windows (by
default it uses FAT-32 file system).
It supports several different file systems , like FAT 16 & FAT
32, NTFS etc.
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19. Contd..
Networking:
Symbian OS supports TCP/IP networking as well
as several other communication interfaces such as
serial, infrared and Bluetooth.
Memory Management:
Although Symbian OS does not use or have the
facilities for mapped virtual memory , it organizes
memory access in pages and allows for the replacement
of the pages, that is , bringing pages in, but not
swapping them out.
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22. iOS (previously iPhone OS) is
a mobile operating system
developed and distributed
by Apple Inc.
Originally released in 2007 for
the iPhone and iPod Touch, it
has been extended to
support other Apple devices
such as the iPad and Apple
TV.
In June 2010, Apple
rebranded iPhone OS as
"iOS".
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23. contd..
The trademark "IOS" had been used by Cisco for
over a decade for its operating system, IOS, used
on its routers.
In 2011, iOS accounted for 60% of the market
share for smartphones and tablet computers. By
the end of 2012, iOS accounted for 21% of the
smartphone OS market and 43.6% of the tablet OS
market.
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29. Previous versions
iOS4: iOS4 was the first version of the OS to be a free
upgrade on the iPod touch.
iOS4.0.1: There were several antenna issues in the
previous version, iOS4.0.1 included a fix to the reception
signal strength indicator.
iOS4.1: iOS4.1 for the iPhone and iPod touch was released
with an update fixed some bugs reported by users,
improved battery life and added several new features
such as Game Center.
iOS4.2: iOS4.2 was never released but instead iOS4.2.1
was released which added iPad compatibility. Further on
iOS4.2.5 was released as a demo version for the CDMA
version of the iPhone 4.
iOS4.3: The public release of iOS4.3 included many new
features such as a Nitro JavaScript engine in Safari. iTunes
Home Sharing also received a major revision in iOS4.3; it
allows users to connect to their home Wi-Fi networks .
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33. Firefox OS
Firefox OS is a Linux-based open source
operating system for smartphones and
tablet computers being developed by
Mozilla.
Programmed in HTML5, C++, JavaScript
and CSS.
The first smartphone running Firefox OS
should be released in the first half of
2013 (expecting July, 2013).
Firefox have also announced that LG
Electronics, ZTE, Huawei and TCL
Corporation have committed to
making Firefox OS devices.
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34. Ubuntu Touch
Ubuntu Touch OS developed by Canonical Ltd.
Ubuntu Touch aims to provide a similar user
experience as the Unity desktop.
Canonical aims to release handsets running the
operating system by October 2013.
Ubuntu Touch devices can be equipped with a full
Ubuntu session and may change into a full desktop
operating system when plugged into a docking
station.
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35. Tizen OS
Tizen is an operating system for devices including
smartphones, tablets, in-vehicle infotainment (IVI)
devices, and smart TVs.
It is an open source system that aims to offer a
consistent user experience across devices.
The Tizen project resides within the Linux Foundation
and is governed by a Technical Steering Group (TSG)
composed of Intel and Samsung.
Tizen provides an environment for application
developers based on the JavaScript libraries JQuery
and JQuery Mobile.
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36. Conclusion
For developers the operating system is an ultimate
platform to develop apps innovatively and publish in
market very easily. Not only in mobile phones, the OS is
diverging in various fields like Tabs, Smart TVs and
Cameras etc.
A mobile OS should be a result of factors like user
experience, battery life, cloud readiness, security and
openness. A successful mobile OS is a result of a
design between software and hardware together.
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