In this part we will talk about the current and last OS of the BlackBerry , iOS and the Windows Mobile.
BlackBerry
The operating system used by BlackBerry devices is a proprietary multitasking environment developed by RIM. The operating system is designed for use of input devices such as the track wheel, track ball, and track pad. The OS provides support for Java MIDP 1.0 and WAP 1.2. Previous versions allowed wireless synchronization with Microsoft Exchange Server e-mail and calendar, as well as with Lotus Domino e-mail. The current OS 5.0 provides a subset of MIDP 2.0, and allows complete wireless activation and synchronization with Exchange e-mail, calendar, tasks, notes and contacts, and adds support for Novell GroupWise and Lotus Notes. Blackberry Torch features Blackberry 6.
Third-party developers can write software using these APIs, and proprietary BlackBerry APIs as well. Any application that makes use of certain restricted functionality must be digitally signed so that it can be associated to a developer account at RIM. This signing procedure guarantees the authorship of an application but does not guarantee the quality or security of the code. RIM provides tools for developing applications and themes for BlackBerry. Applications and themes can be loaded onto BlackBerry devices through BlackBerry App World, Over The Air (OTA) through the BlackBerry mobile browser, or through BlackBerry Desktop Manager.
IOS
The last and current OS for IOS are:
1. IOS 4.3.1 (4.2.6 for CDMA iPhone) was released on March 25, 2011. It addressed an occasional graphics glitch on the fourth generation iPod touch, resolved bugs that were related to activating and connecting to some cellular networks, fixed image flickering when using an Apple Digital AV Adapter with some TVs, and resolved an issue authenticating with some enterprise web services.
2. IOS 4.3.2 (4.2.7 for CDMA iPhone) was released on April 14, 2011. It fixed an issue that occasionally caused blank or frozen video during a Face Time call, issues that prevented some international users from connecting to 3G networks on iPads, and contained the latest security updates.
3. iOS 4.3.3 (4.2.8 for CDMA iPhone) was released on May 4, 2011 in response to the discovery of location services caching in iTunes. The update reduces the size of the cache, prevents it from being uploaded during synchronization, and erases it when location services are turned off.
Mobile windows
The current and last version is "Windows Mobile 6.5". It is based on the Windows CE 5.2 kernel, and features a suite of basic applications developed with the Microsoft Windows API. It is designed to be somewhat similar to desktop versions of Windows, feature-wise and aesthetically. Additionally, third-party software development is available for Windows Mobile, and software applications can be purchased via the Windows Marketplace for Mobile.
Originally appearing as the Pocket PC 2000 operating system, most Windows Mobile devices come with a stylus pen, which is used to enter commands by tapping it on the screen. Microsoft announced a completely new phone platform, Windows Phone 7, at the Mobile World Congress in Barcelona on February 15, 2010. Phones running Windows Mobile 6.x will not be upgradeable to version 7, officially. Several developers however, have ported Windows Phone 7 to devices natively running Windows Mobile, an example being the HTC HD2.
There are a lot of new operating systems , and that show to us the companies have competitors between them to be the best in the market . Also the customers or the buyers always choose the best and the modern product , so the companies always create the best operating systems to attract more customers.
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