1. Student Name: Group

2.  Developed by Microsoft  Alliance with Nokia in 2011  4 main functions:  Outlook Mobile  Windows Media Player for Windows Mobile  Internet Explorer Mobile  Office Mobile

3. User-friendly  similar to desktop versions of Windows Runs on multiple hardware platforms Devices have met hardware requirements Consistent Control Updates Has Leading Hardware Vendor (Nokia) Backing it Good Integration with Microsoft Windows

4.  Higher Cost  comparing with the other OS  Tiny Application Store  Not Stability  Less Visibility  Low Market Share  Copy-Paste Problem

5.  Based on the Linux kernel  Allows developers to write managed code in the Java language  Controlling the device via Google-developed Java libraries

6. Stable Good User Interface Framework Flexible Open Source Largest Market Share More than One Phone Google Map Attracting Name-Brand Developers

7.  Inconsistent  Not Elegant enough  Poor Protecting Personal Information  Poor Market Strategic  Poor App Store Experience

8. Developed by Symbian Ltd. Bought by Nokia Devices based on Symbian accounted for 43.5% of worldwide smart phone sales in 2010 In 2009-2010, Motorola, Samsung, LG, and Sony-Ericsson announced their withdrawal from the platform. By the end of 2010, Samsung totally leave Symbian including the support and service and also remove all content relating to Symbian from its website. Also, Sony Ericsson will not introduce new mobile phone with Symbian. In 2011, Nokia announced cooperate with Microsoft and leave Symbian

9. Standard Customisability Easy to Use Effectively Memory Management Able to Run on A Variety of Hardware Long Experience

10.  Integration Problem  Not Open Source  Too many Icons and Functions  Low Market Share  Hard to Comfort  Most Users don’t know they have a Symbian Device  Development Costlier

11. Developed by Apple Inc. For the iPhone,iPad and iPod Touch. High stability and fast running

12. Supporting Flexible Interface Functional Best Hardware Stable Elegant Massive App Store

13.  Entertainment  Many applications in iPhone are high in entertainment.  App Store’s Biased Rules  AT&T  Copy-Paste Problem  Limited Product Lines  High Costs  Limited hardware which is expensive.

14.  Background knowledge:  OS provides a software platform for the Palm series of handheld PDAs made by Palm Inc  Support Metrowerk’s CodeWarrior as the official SDK  Support C, C++, assembler  Key features:  Hand-writing recognition input system called Garaffti 2  simple security model: device can be locked by password, arbitrary application records can be made private  TCP/IP network support

15. Run application more Stable  no need to reset PDA within a few days Type data more quickly because Graffiti  both of English and Chinese Focus on business functions  for data entry, e-mail functions

16.  Only one task for application  one application program must finish before the next can be selected  No more new OS model will be produced  no more upgrade function should be provided

17. Mainly Provide basing functions  e-mail, calendar, notes and contacts, Task List  GPS and BlackBerry Maps  Developed by RIM Provide multi-tasking All data transmitted between BlackBerry Enterprise Server and BlackBerry smartphones.

18. Strong Growth, Second Largest Smart Phone OS Sold On all Carriers Worldwide Entrenched in Enterprise Big Market Share Long Battery Life Top-Notch Security BBM

19.  Needs to Improve its Mobile Browser  Poor App Store Experience  App Store is not Installed on All Devices  Unstable BlackBerry Messenger Connection  Absent Email Problem  Virtual Networks Problem  Text-based user interface

20.  Blackberry OS  App for Business  OS more stable  entry a lot of data  Save time with having instant information  Security  On-device Encryption  Private encryption keys are assigned to each BlackBerry smartphone user.  Data sent to the BlackBerry smartphone is encrypted by its Enterprise Server using the private key retrieved from the user's mailbox.  Lower cost  comparing with iPhone OS