Mobile phones

Mobile phones

Mobile phones

A mobile phone (also known as a wireless phone, cell phone, or cellular telephone) is a very small portable radio telephone.

The mobile phone can be used to communicate over long distances without wires. It works by communicating with a nearby base station (also called a "cell site") which connects it to the main phone network. As the mobile phone moves around, if the mobile phone gets too far away from the cell it is connected to, that cell sends a message to another cell to tell the new cell to take over the call. This is called a "hand off," and the call continues with the new cell the phone is connected to. The hand-off is done so well and carefully that the user will usually never even know that the call was transferred to another cell.

As mobile phones became more popular, they began to cost less money, and more people could afford them. Cell phones have become so cheap to own that they have mostly replaced pay phones and phone booths except for urban areas with many people.

In recent days, more and more mobile phones are considered as "smartphones". As well as making voice calls, they can be used as computers.


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