Two questions on the phone software, not open to write the title, please come take a look

1. May I ask how the mobile phone operating system developed? (What language is used and the like) if I develop an operating system, it can be to get the phone on the market to buy it? 2. PST What software? Compared to my old cell phone models, Samsung, no cable, no memory card, does this phone have any way to pass things connected with the computer? Yes I can not upgrade its operations system? Note: If you know, please tell me the answer; if you do not know, Do not suppose you give me an answer, thank you. Currently used in mobile phone operating systems are PalmOS, Symbian, Windows CE and Linux are four. Symbian system: Symbian is a real-time, pure 32-bit multitasking operating system with low power consumption, small footprint and so on, very suitable for mobile phones and other mobile devices, through continuous improvement to support GPRS, Bluetooth, SyncML, and 3G technology. The most important is that it is a standardized open platform, anyone can develop software to support Symbian devices. The difference is that with Microsoft products, Symbian General mobile devices, which is the operating system kernel, graphical user interface technology with the separation, can well adapt to different ways to enter the platform also allows manufacturers to produce their products more friendly user interface, in line with the trend of personalization, which is like a different user to see the main reason for symbian system. Now the java platform for this process has begun to flourish on the Internet. Users can install the software, extended phone functions. In the Symbian development stage, there are three branches: namely, Crystal, Pearl and Quarz. The first two major market for communications devices, but also in most mobile phones, smart phone operating system in the future the main force. The first phone based on Symabian systems market in 2000, Ericsson R380 mobile phone. The real mature at the same time or attention is listed on the Nokia 2001 and 9210, it uses the Crystal branch system. Nokia 2002 launched in 7650 and 3650 is a Symbian Pearl sub-system models, where 7650 is the first 2.5G network-based smart phones, they all belong to the 6.0 version of Symbian. Sony Ericsson introduced a model also used the Pearl Symbian branch to the 7.0 version has been developed, is designed for the development of 3G networks, and the current has reached 8.0 Nokia 6630,6681 and so on, can be said to represent today's The most powerful mobile operating system. In addition, Symbian started from version 6.0 to support external storage devices, such as the MMC card, making it a powerful expansion capability into full play, so that more software and a variety of storage of large volumes of multimedia files as possible. Windows Mobile systems: Windows Mobile Pocket PC and Smartphone, including system and Media Centers, Pocket PC for wireless PDA, Smartphone designed for mobile phones, there are a number of new mobile phone from the IT industry manufacturers to use a growth rate faster. According to Microsoft's official statement: \, Smartphone, and Media Centers three platform system for personal mobile electronic consumer market. Since most models have color, so power-hungry, and because Windows CE itself is a huge resource phagocytosis. In the functional integration of extensions to Microsoft, tend to use, most have a standard CF card slot, users can increase the memory according to their needs, the installation of cameras, modems and other equipment. Microsoft developed specifically for mobile phones and Windows Mobile offers so many features, on different platforms to achieve the functions overlap each other have different emphases. The three platforms support and desktop data synchronization. Smartphone focus on the functionality provided links, it is mainly supported features are: telephone, e-mail, contacts, instant messaging. PocketPC focus on personal matters dealing with the functions and simple entertainment, the main support functions are: scheduling, Mobile Office, a simple multimedia playback. Linux systems: Linux system is a open source operating system, there are already many versions of popular. But has not been more widespread support. Linux into the mobile terminal operating system nearly one year, to the advantage of its open source has attracted more and more terminal manufacturers and operators to its attention, including Motorola and NTT DoCoMo and other leading manufacturers. Has developed a Linux-based phones are Motorola's A760, A768, CEC of the e2800, the Samsung i519 and so on. Intense interest in the mobile phone market, a firm foothold, grabbing market share is never easy. Palm OS Action: This is a 32-bit embedded operating systems, mainly used in mobile devices. This system originally developed by 3Com's Palm Computing division develops, Palm Computing now has a separate company. Palm OS and HotSync synchronization software combination that enables mobile terminals and information on your computer to synchronize the desktop functionality to mobile devices. Palm OS operating system developed by the Palm Corporation, and licensed to Handspring, Sony and Qualcomm, and other equipment manufacturers, which tend to PDA operating system, the operating system. Palm OS PDA market in a dominant position. Palm's product line itself, including smart phones, also announced the first smart phone developers Handspring merger, while the independent software sector. pst phone programmer software is the product support toii short, is to bring up the java loader, read basic phone information, you can also upgrade their own brush. to remind you that, pst this software on the computer's operating system is relatively critical, if it is required to play under the windows 98se usb patch, windows 2000 or above you need to install sp2, windows xp sp1 or above needs to be installed, and then call usb patch. or can not be successfully installed pst. In addition windows me system does not support pst .