What is a cell tower and how does it work?

Question

A cell tower is a structure that cell tower supports antennas used for wireless communication. These antennas transmit and receive radio signals between mobile devices and the telecom network. When you make a call, send a message, or use mobile data, your phone connects to the nearest cell tower, which then routes the signal through the telecom network. Towers are usually owned by independent tower companies or telecom operators, and multiple carriers often share the same tower to reduce infrastructure costs.