The basic architecture of cell phone communication is based upon two popular standards, GSM (Global System for Mobile phones) and CDMA (Code Division Multiplication Access). Cell phones have been used since the last decade for communication purposes and also increasingly as a media vehicle.
GSM phones are different from the CDMA in the sense that the SIM cards enclosed inside the back are replaceable, while in CDMA they are not.
The GSM phone is quite distinct from the traditional analogous telephones as it has many features which the analog phones don’t have. You can have encryption, fax machine, call forwarding, text messages (SMS), call waiting etc which are not possible in analogous telephones.
Cell phones today have advanced features and applications such as Global positioning System (GPS). GPS helps you to find the exact location of your friend or relative. It has features that are more advanced than the basic functionality of the traditional mobile phone.
GPS or Global Positioning System is a device used to pin down people’s specific location anywhere on earth. The central hub of the system depends on “24 satellites” that move around the earth two times a day. The identification of certain locations was made possible using fully operational devices that include a series of receivers and satellites.
When mobile phones were ushered in, it was hailed as a luxury product. It was not uncommon to see celebrities flashing their mobile phones to show that they are different from others.
However, as time went by innovations came in that reduced the cost of the mobile phones. To differentiate, the mobile phone makers added other features such as Internet browsing, music (MP3) playback, personal organizers, e-mail, built-in cameras and camcorders. For the accessories, the add ones were Face plate LED Flashing lights battery, Flashing lights keypad Car charger Screen hologram , headset , leather belt holster case , phone strap 1GB MMC card (storing videos, pictures, ringers, games, etc.) neck chain (popular in Asia) , cell chain (popular in the US?) , desktop phone holder
Mobile phones also have some health issues.
Some of the best cellular phones are created by Motorola, - Nokia,- O2, Panasonic, Samsung,- Sharp, Sony Ericsson and Toshiba.
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