Cellular phone or hand phone is an electrical telecommunication device that has similar basic functions with conventional phones. The difference is that cell phone can be bought around (portable) and don’t have to be connected with cable phone network (non cable or wireless).
Today, the most countries have two wireless phone networks, such as GSM (Global System for Mobile Telecommunication) and CDMA (Code Division Multiple Access).
On April 3, 1973, a Motorola employee, Martin Cooper, has firstly found cellular phone system. However, some people have reported that finder of cellular phone has been originated from one of Motorola divisions (where Cooper was an employee), with a first model DynaTAC. Cooper’s idea behind this fact was how to make a small communication device which is easy to bring around flexibly. At the first time, especially on 1983, cell phone was for sale $10,000.
In addition to call or receive calls, cell phone is generally used for sending and receiving SMS (Short Message Service). The providers in some countries have offered the third generation service or what well known as 3G. It is also supported with videophone feature, either for payment (currency) or online television.
Today, cell phone becomes a multifunctional gadget. In line with digital technology development, today’s cell phone is supported with wide variety of features, such as radio and TV broadcasts, audio player software MP3 and video, digital camera, game, and internet service (WAP, GPRS, 3G).
Moreover, cell phone was attached with PC features. You will find it as mini PC, but not laptop or netbook. This feature is usually useful for business owners who want to do entire job with a mini device within a few minutes or even seconds.
Currently, cell phone could be divided into three categories according to functions: business, entertainment, fashion, and standard cell phones. Each one of them has specific features ideal for the function it was attached for.
