Generations of Cell Phones

 

 Detail discussion on generation of Mobile Phone. Mainly three generation of cellular phone, 1st 2nd and 3rd generation.

 

First Generation Cell Phones

 

In 1983, Motorola unveiled to the world, the first truly portable cellular phone. It was called the Motorola DynaTAC 8000X. It was approved for use in the United States by the FCC. Motorola developed the technology for cellular phones for decades and this particular phone took 15 years to come to market at an expense of over 100 million dollars in research costs. The DynaTAC800X was extremely lightweight for its time and only weighed about 28 ounces. It was 13 inches x 1.75 inches x 3.5 inches and was known as the Brick for its shape. It was largely developed with the help of Dr. Martin Cooper of Motorola.

 

From 1983 to the end of the 1980's cell phones grew in popularity due to the innovations in cellular networks that were able to handle phone calls in either one area or hand them off to other areas. While most cell phones weren't made to be carried in your hand, all phones were made for permanent installation in the car. For a while the term "car phone" was extremely popular. Besides car phones, there were a few models that came in tote bag type configurations that can easily hook up to a car's battery, via the DC outlet to make calls. There were also a few models that came as briefcases, to hold large batteries necessary to make phone calls.


Second Generation Cellular Phones

 

Cellular phones from the early 1990's are considered being second generation (2G) and they were able to work on mobile phone systems such as GSM, IS-136 (TDMA) and IS-95 (CDMA). Digital mobile phone networks were in use in the United States in 1990 and in Europe by 1991. 2G mobile phones use digital circuit switched transmissions. This ultimately enabled quicker network signaling, lowering the amount of dropped calls and increasing call quality. As 2G digital networks were online, most of the time, they replaced analog network frequencies, effectively making them obsolete.

 

Phones based on 2G technology were much smaller than the brick telephones of the mid to late 80's. Most 2G cellular phones were usually in the range of 100 to 200 grams, plus they were hand held devices that were truly portable without the need for a large battery. Advances in battery technology, as well as computer chip technology also helped to make 2G cell phones much smaller than their predecessors. With these innovations, cell phone usage soared.


Third Generation Cellular Phones

 

Third Generation cellular phones is the technology that is currently available today and it is commonly referred to as 3G. While 3G came only a few years after 2G, mainly due to many innovations in technology and services, standards for 3G are usually different depending on the network.

 

It is usually stated that 3G is not necessarily a rigid standard, but is a set of requirements that most networks and cell phone providers follow. There are two main requirements; they include 2 Megabits of maximum data rate indoors and 384 kbits for outdoor use. 3G mobile phones usually include innovations to receive much more than phone calls, for instance, SMS text is available and some 3G phones also offer email and Internet access. Currently technologies are continuing to improve and new innovations such as streaming radio and TV, as well as Wifi are currently breaking into the market.