Mobile phones transmit and receive signals using electromagnetic waves, that is, wireless signal are electromagnetic waves which can travel through a vacuum, they do not need a medium or matter.
What are electromagnetic waves?
They are generated by electrical and magnetic particles moving at the same time (oscillating).
Characteristics of electromagnetic waves
- Network waves are electromagnetic waves.
- A mobile phone has coverage when it receives electromagnetic waves from at least one base station.
- They do not necessarily require a material medium for their propagation.
Therefore, we can conclude that electromagnetic waves are those that do not need a material medium to propagate and include, among others, radio, television and telephone waves.
Learn more about electromagnetic waves here: https://brainly.com/question/13803241
