A type of wireless communication that is most familiar to mobile phones users. It’s called ‘cellular’ because the system uses many base stations to divide a service area into multiple ‘cells’. Cellular calls are transferred from base station to base station as a user travels from cell to cell. The basic concept of cellular phones began in 1947, when researchers looked at crude mobile (car) phones and realized that by using small cells (range of service area) with frequency reuse they could increase the traffic capacity of mobile phones substantially. However at that time, the technology to do so was nonexistent.
The basic concept of cellular phones began in 1947, when researchers looked at crude mobile (car) phones and realized that by using small cells (range of service area) with frequency reuse they could increase the traffic capacity of mobile phones substantially. However at that time, the technology to do so was nonexistent
The inventor of the first modern portable handset is Dr Martin Cooper, who was the general manager for the systems division at Motorola at that time. In 1973, Dr Cooper made the first call on a portable cell phone. He called his rival Joel Engel, head of research at Bell Labs, to give him the latest news on how the competition between them was turning out. The picture above represents him and his first mobile phone. The first commercial handheld cellular phone was launched by Motorola.
Since the 1980s, the mobile phone has changed from a pricey item used by business people to a very popular communications device that is used by most of the general population. In actual fact, these days, mobile phones outnumber landline telephones in many countries
Mobile Phones having so many features we can send sms along with voice calls ,mobile phones having so many advance features like internet browsing , music (MP3) playback, memo recording, personal organizer functions, e-mail, instant messaging, built-in cameras and camcorders, ringbones, games, radio, Push-to-Talk (PTT), infrared and Bluetooth connectivity, call registers, ability to watch streaming video or download video for later viewing, video calling and serving as a wireless modem for a PC, and soon will also serve as a console of sorts to online games and other high quality games. The total value of mobile data services exceeds the value of paid services on the Internet, The largest categories of mobile services are music, picture downloads, video gaming, adult entertainment, gambling, video/TV.
Currently the world’s largest manufacturer of mobiles is Nokia, with a global device market share of approximately 40% in 2008. Other major mobile phone manufacturers (in order of market share) include Samsung (14%), Motorola (14%), Sony Ericsson (9%) and LG (7%). These manufacturers account for over 80% of all mobile phones sold and produce phones for sale in most countries.
Viewed 77 times by 18 viewers
