A simple-minded answer to the question what is an iPhone would be; it is a cellular phone. The basic functions are those of a mobile phone handset alright. However, even as a mobile handset, what iPhone falls into is the smartphone category. What a smartphone like the iPhone offers its user is a general computing platform in a handy form factor. As the processor and related resources in a smartphone have sufficient spare power, the smartphone would be able do more than just manage voice communications.
The iPhone was launched in 2007, and it has gone through several model upgrades. The current version is iPhone 5 and was launched on Sep 21, 2012. As a cellular phone it supports 2G, 3G, 4G and LTE, mobile network protocols. With 4G and LTE support, the data applications on an iPhone are supported by the largest possible bandwidth on mobile networks. It supports Wi-Fi connectivity in addition. The operating system in use is the iOS and the current processor is A6. What this hardware/software ecosystem in iPhone can support is additional applications besides what comes with the phone. A large part of these apps (as the software applications are known) are provided by third parties. What Apple has done to facilitate using these iPhone applications is to stock them in an App store. Users could easily download these through the Internet.
A recommended strategy for adoption of SQL Server 2005 and other versions is to get started with the Express edition. This is entirely free to use and even redistribute as part of any product/application you may have developed. The SQL 2005 introduced a new data type XML. A table column may be defined as of the XML data thus ensuring XML data can be stored in the SQL Server 2005 database. XML strings also could be used as literals where appropriate. XML data required specialized indexing and were made available in the SQL 2005. T-SQL extensions were also introduced so that XQuery based XML data queries could be embedded in T-SQL. XQuery is the language for querying a collection of XML data. With XML becoming a native type of the database, SQL 2005 onwards, the database acquired the capability to collaborate through web services. Results returned by participating services are returned as XML data. Several other new features in SQL Server 2005 were introduced to help with scaling, error handling and performance. Dynamic Management Views or DMVs help viewing the state of the database server to monitor a database instance, diagnose problems as they happen or to tweak it performance. Data mirroring support in SQL Server products appeared first with this 2005 version. Data redundancy became part of the server. On failure, it was easy to recover by simply switching over to the mirrored data. Switching manually or automatically is supported in SQL 2005.
Different version of iPhones are available including iPhone 3G, iPhone 3GS, iPhone 4,
iPhone 4S and last but not least iPhone 5. More info is here:
http://www.ask.com/answers/255872961/how-many-versions-of-iphones-are-there
What a range of I/O devices are connected to the iPhone! That helps provide a range of features such as a camera that can shoot HD video, photographs, music player, the Internet browsing, multimedia voice mail, video calls (made possible by a second camera in the back of the camera, GPS functionality, high resolution “retina display,” accelerometers (that help automatic orientation of the display from portrait to landscape when the phone is turned), and a large 4” touch screen display. It connects to a magnetometer, a proximity sensor, a gyroscopic sensor. What the iPhone has introduced is a natural language interface that helps users to interact with the phone by speaking to it. This virtual voice based assistant is known as “Siri.” This range of available features makes an endless number of apps to be developed. Current estimates put the number of apps available at the App store close to a million.
Since its launch in 2007 has had a huge success in the marketplace. What the iPhone has made possible is a superb experience in the product class. Though smartphones have been around, and even touch screen convenience has been introduced before, the Apple device provides a unique experience that has made users addicted to them. Two fingered gesture on the touch screen combined with a very intuitive and easy to use interface adds to the attraction of the phone. What two cameras on the iPhone can do is that you could send videos of your surrounding through the front camera. Thus, the application that lets you video chat has become one of the very popular applications on the phone. What the iPhone also does is it supports a range of sophisticate games helped by the processor power available. Only pity is that iPhone works with a specific mobile operator. What some dedicated followers of the iPhone succeeded in doing is to “jailbreak” the device and let it work with other operators too.
Additional resources on iPhone:
To learn more about how iPhone operates and what is iPhone like, you may follow up on the following references:
http://www.apple.com/iphone/compare/
http://en.wikipedia.org/wiki/IPhone
