Cell phone also known as mobile phone, mobile, cellular phone or simply cell is a small electronic device for communication with long range of networks. Over a time, there has been a vast improvement in this small device which provides array of services apart from chatting like:

• Now one can play games and navigate internet
• Do simple calculations
• Listen music and can send and receive text and multi-media messages
• Can store contacts and photos and
• Last but not the least, can set reminders.

There are many different handsets such as camera phones, smart phones, music phones and multimedia phones available in the market to match heterogeneous market segment. Highly improved microchips with increased processing power support many new features like email meant for corporate world.

Time and again cell phone is known as fourth screen following cinema, TV and computer and is also known as seventh of mass media after print, recording, cinema, radio, TV and internet.

To operate a cell phone, the power is obtained from rechargeable batteries. A micro chip or SIM card stores instrument’s configuration and its information such as subscriber’s plan and is placed near the battery into the phone. It can be reinserted to another instrument without change in number. In Cell that does not support SIM card, all data like service provider number, authentication key, phone number, emergency numbers, etc. are programmed into the phone memory.

The decision of buying a cell phone also leads to selection of service provider. CDMA is a transmission technology in US and employ by carriers such as Verizon. The attractive schemes are often advertised by the carriers which one can use according to personal usage like whether one is using the phone locally or nationwide.

Cell phones are regularly used by the government for security purposes. They are also used to collect geographical data through the technique called multilateration.

One can spend some time on World Wide Web to gather all options available to buy a cell phone. Some good web sites also make available price comparison between different brands on a single web page which saves time to navigate many sites and pages. Searching on net is hassle free time which is not possible if buyer visits to different stores.