Tag: PDA GSM
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What is a smartphone?
The so-called smart phone refers to "a personal computer, with a separate operating system, which can be installed by users to install software, games and other third-party service providers. Through such programs, the functions of mobile phones are continuously expanded. And a general term for such a type of mobile phone that can realize wireless network access through a mobile communication network."
Simply put, a smart phone is a mobile phone that can expand the basic functions of a mobile phone by downloading and installing software like a computer.
What is the function of a smartphone?
Broadly speaking, in addition to the mobile phone's calling function, the smartphone also has most of the functions of the PDA, especially personal information management and browser and email functions based on wireless data communication. Smartphones provide users with enough screen size and bandwidth, which is convenient to carry around, and provides a broad stage for software operation and content services. Many value-added services can be launched, such as stocks, news, weather, transportation, goods, Application downloads, music image downloads, and more. Combined with the support of 3G communication network, the development trend of smart phones is bound to become a powerful, comprehensive personal handheld terminal device integrating call, SMS, network access, film and television entertainment.
Smartphone features
1. It has all the functions of an ordinary mobile phone, and can carry out normal calls, texting and other mobile applications.
2. It has the ability to access the Internet wirelessly, that is, it needs to support CDMA 1X or 3G networks under GPRS or CDMA networks under GSM networks.
3, with PDA features, including PIM (personal information management), schedule notes, task scheduling, multimedia applications, browsing the web.
4, with an open operating system, on this operating system platform, you can install more applications, so that the functionality of the smartphone can be expanded infinitely.
Classification of smartphones
The birth of smart phones is the evolution of Pocket PCs. The earliest handheld computer does not have the calling function of the mobile phone, but as the user's dependence on the personal information processing function of the handheld computer is improved, but it is not accustomed to carrying the mobile phone and the PPC device at any time, the manufacturer will be the handheld computer. The system was ported to the mobile phone, and the concept of a smartphone appeared.
Since the birth of a smartphone is related to a handheld computer, its operating system will definitely be related to handheld computers. The current smartphone systems mainly include Symbian, Windows Mobile Smart Phone and Pocket PC, Palm, and Linux. However, unlike the PDA operating system, Palm and Windows CE are different. In the smartphone operating system, Symbian has seized the opportunity. Nokia has basically adopted the Symbian operating system.
Symbian:
Symbian is very similar to the combination of Windows and Linux. It has a good interface, uses kernel and interface separation technology, and has low hardware requirements. It supports C++, VB and J2ME. The compatibility is very good. The current Symbian system has been very popularized by NOKIA. It has evolved from SeriesS60 to S80, S90 and UIQ. It should be noted that not all Symbian systems are intelligent systems, such as the early S40 system, which is not a smartphone system.
Representative models: NOKIA N73, N95, E90, N81, N70, E50, N82, N93 and many other models.
Smart Phone:
Microsoft launched the smartphone operating system in 2001. Has the blood of windows, so it has a very powerful synchronization with the desktop, and the entertainment features are outstanding. The disadvantage is that the hardware requirements are relatively high, and the system is often unstable due to insufficient memory.
Representative models: Dopod 515, 535, 565, 575, 585 and other 5X5 series; Motorola MPX200, MPX220;
PocketPC:
As an extension of the PDA-specific system Windows CE on mobile phones, the launch of the WM system can show that Microsoft attaches importance to the smartphone operating system market. WM systems have many innate advantages, such as powerful built-in software, WORD, EXCEL. IE, MSN MESSENGER, OUTLOOK, MediaPlay, etc., similar software on other systems is difficult to be so perfect and unified. Due to the high hardware requirements and the high price, the power consumption is still relatively large. Like the SP system, the stability is relatively poor.
Representative models: Dopod S1, P800, Amoi, Lenovo are involved.
Palm:
This kind of system has low hardware requirements, so it can be well controlled in price and consumes little power. The biggest advantage of the Palm system is that it has an early experience with independent PALM handheld computers, so its third-party software is extremely rich, the functions of business and personal information management are outstanding, and the system is very stable. The disadvantage is that the entertainment is poor, the operation is difficult, and it is difficult for the novice to get started.
Representative models: Treo series smartphones, 680, 650, etc.
Linux:
Linux has the advantages of open source code, low software license fee, and rich application development talent resources, which is convenient for developing personal and industrial applications. Because it started too late, there is not a very strong software foundation.
Representative models: Motorola A780, A1200, E2, Philips 968.
iPhone:
The iPhone is a revolutionary mobile phone that allows users to make calls by tapping on a name or number. The iPhone syncs all your contact information from a PC, Mac(R) or Internet service provider (such as Yahoo!), so you always have a complete list of the latest contact information. In addition, you can create a list of your favorite phones for the most frequently dialed calls and combine them to hold a conference call. Using the Mac OS X system,
Representative models: iPhone
The development of the global smartphone market
According to the results of Nuosheng Research, in 2005, global smartphone sales reached 55 million units, 2.6 times that of 2004. In the future, the market for smartphones will continue to grow rapidly, and shipments and the proportion in the mobile phone market will continue to increase.
In the global operating system competition for smartphones, the Symbian camp represented by Nokia and Sony Ericsson has an absolute advantage. In 2005, 8 vendors licensed for the Symbian operating system sold 28 million Symbian smartphones. 52%. The Linux camp represented by Motorola ranked second. The advantage of the Linux system is that it is low cost and can be tailored according to the needs of mobile phone manufacturers. The mobile phone of the Linux operating system has shown a trend of favoring users in the Asian market. Ranked third is the Microsoft Windows Mobile series, although with the cooperation with Intel, Windows operating system has achieved rapid growth in the emerging PDA mobile phone market, but because Microsoft operating system has too much control over software and user interface, mobile phone manufacturers And the attitude of the operators is still very cautious.
With the development of domestic small and medium-sized mobile phone manufacturers, the market of black mobile phones continues to expand, and some manufacturers have begun to enter the field of smart phones. Because Windows Mobile technology structure is relatively simple, most cottage smart phones use Windows Mobile system, which is called cottage PPC.
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