Best Cellular Phones : how cellular phone works and problems with them
cell phone, you can talk to anyone on the planet from just about anywhere! Isn’t it amazing!!!
The mobile phone or mobile, also called a cellular phone, or cell phone is a long-range, portable electronic device used for mobile communication that uses a network of specialized base stations known as cell sites.
In addition to the standard voice function of a telephone, current mobile phones can support many additional services such as SMS for text messaging, email, packet switching for access to the Internet, and MMS for sending and receiving photos and video (camera phones).
Most current mobile phones connect to a cellular network of base stations (cell sites), which is in turn interconnected to the public switched telephone network (PSTN)
This Modern day, cell phones provide an incredible collection of functions, and new ones are being added at a breakneck pace. Depending on the cell-phone model, you can
•Store contact information •Make task or to-do lists •Keep track of appointments and set reminders •Use the built-in calculator for simple math •Send or receive e-mail •Get information (news, entertainment, stock quotes) from the Internet •Play games •Watch TV •Send text messages •Integrate other devices such as PDAs, MP3 players and GPS receivers how best cellular phone works
But have you ever wondered how best cellular phones work? What makes it different from a regular phone? What do all those terms like PCS, GSM, CDMA and TDMA mean? In this section, we will discuss the technology behind cell phones so that you can see how amazing they really are.
Best cellular phone, like any other electronic device, has its problems:
•Generally, non-repairable internal corrosion of parts results if you get the phone wet or use wet hands to push the buttons. Consider a protective case. If the phone does get wet, be sure it is totally dry before you switch it on so you can try to avoid damaging internal parts.
•Extreme heat in a car can damage the battery or the cell-phone electronics. Extreme cold may cause a momentary loss of the screen display.
•Analog cell phones suffer from a problem known as "cloning." A phone is "cloned" when someone steals its ID numbers and is able to make fraudulent calls on the owner's account. Here is how cloning occurs
When your phone makes a call, it transmits the ESN and MIN to the network at the beginning of the call.
The MIN/ESN pair is a unique tag for your phone -- this is how the phone company knows who to bill for the call. When your phone transmits its MIN/ESN pair, it is possible for nefarious sorts to listen (with a scanner) and capture the pair.
With the right equipment, it is fairly easy to modify another phone so that it contains your MIN/ESN pair, which allows the nefarious individual to make calls on your account.
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