Cell Phone Technology : What is a Cell Phone?

Before going too far, let us explore first the heart of this blog : Cell Phone. What exactly is a Cell Phone and how does it work?

A Cell Phone, a mobile telephone, is actually a radio. Now, a radio or a walkie-talkie uses half-duplex frequency : that is why only one person can talk at a time. A Cell Phone uses a full duplex frequency, meaning both the caller and the one who received the call can talk at the same time.

A cell phone uses a cellular network of base stations called cell sites, hence, the name Cell Phone.