The first touch screen phones arrived on the market in 1992, forever changing the functionality of smartphones. The mobile phones were loaded with many different applications, like a calculator, world clock, games, a calendar and a notepad. Since then, many other developers of smartphones have added to the array of designs and applications to give consumers an almost confusing choice in mobile phones. In the competitive realm of touch screen phones, devices such as the BlackBerry have gone one step farther by adding an attached QWERTY keypad to allow functions such as email and instant messaging. In addition, the BlackBerry combined all of the features of other cell phones and included a personal digital assistant (PDA).
Smartphones such as the BlackBerry are basically hand-held computers with integrated mobile phones. They offer more advanced applications than those found on basic feature phones; and touch screen phones allow faster access and ease of use for the applications, eliminating the need to scroll or punch buttons to find what the user wants to use. Like many other smartphones, the BlackBerry uses an operating system (OS) similar to a computer in order to allow use of not only the standard applications that are loaded on the mobile phones, but also third party applications developed for specific smartphones.
Similar to the BlackBerry, other touch screen phones have their own proprietary OS and some applications that are exclusive to the particular brand of smartphones. Although the exclusive applications are not compatible with other mobile phones, the developers also create applications that are able to be used on a variety of smartphones in order to create a standard compatibility and remain competitive with other touch screen phones, such as the BlackBerry. In addition to providing many different applications for use on other mobile phones, the designers of smartphones followed the example of the BlackBerry by adding a QWERTY keypad that is either a part of the main touch screen phones or that slides out from behind the main screen, giving users even more ways to use their mobile phones.
As the years go by, the manufacturers and designers of touch screen phones and their applications have added even more functionality, allowing them to stay competitive in an ever-changing market for smartphones. In addition to adding new applications and functions, newer touch screen phones like the BlackBerry provide backward compatibility for older applications, allowing users to continue to use their favorite applications or games on the newer smartphones without additional cost.
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