Information About Cell Phones
Cell phones can make mobile phone calls all across the world. They can be used to call and receive calls from landlines as well as to call and receive calls from other mobile phones. All cell phone are basically the same, but manufacturers try to implement additional function to make them more attractive to the customers.
Dr. Martin Cooper, a Motorola researcher and executive, invented the first cell phone in April 1973 in New York. The first cell phone was heavy and bulky. In 1983 the DynaTAC 8000x was the first cell phone to be available to purchase for use in the United States. In the twenty years between 1990 t0 2010 worldwide subscriptions grew from 12.4 millions to over 4.6 billion users.
Features - The common components found on all cell phones are.
- Battery - a rechargeable type that provide the power source for the phone functions.
- An input mechanism to allow the user to interact with the phone, like a keypad. A touch screen virtual keypad can be found in some high-end smartphones.
- Basic mobile phone services allows the user to make and receive calls and to send and receive text messages.
Developments over the years have allowed manufacturers to include many features into a cell phone. The cell phone works with all of the phone features needed, such as speed dialing, hands-free system, speaker, voice mail, call waiting and call forwarding.
There are also extra features, including texting, calendars, calculators, alarms, stopwatch, digital and video camera, photo display, music player, games and web access. Using a cell phone will keep you in touch with others while you are on the go and also offer entertainment.