Why don’t mobile phones need wires?

Nowadays, mobile phones are a common sight you see them on buses, trains, in offices, on roads… almost everywhere you look. They are very convenient because they allow you to make calls from just about anywhere. You don’t need wires for a mobile phone… why is that?A mobile phone is actually a radio—an extremely sophisticated radio, but a radio nonetheless. Mobile phones work using ‘cells’. Each cell has a base station at its centre. The base station sends and receives calls from your phone. Your phone communicates with the base station using radio waves. As you move from place to place, your calls are transmitted from the nearest base station