Second and Third Generation of Cell Phones

The second generation (or 2G network) cell phones began appearing in 1991 and included many features with higher frequencies. Companies shifted their focus from the large car phones to handheld phones and became the standard. With new technology advances, such as, smaller batteries and more energy efficient devices; demand for cell phones rose. As demand rose, new transmission towers were installed in order to expand areas of coverage. Text messaging was introduced in 1993 when Finland sent the first person to person text message. Other innovations in the 1990’s was downloading content, option to change ring tones, and being able to download new ring tones. By 2000, the 3G network was developed, digital replaced analog, and changed to the IMT-2000 standardization that set data transfer rates. The late 2007/early 2008 saw over 300 million cell phones in use around the world with the ability to download games, surf the internet, take and send pictures and video. Smart phones allow users to even edit documents and send emails when out of the office. It is truly remarkable that we have gone from briefcase sized phones to light weight phones that fit in a pocket.
http://www.symatech.net/heistory-cell-phones