The mobile phone maintains radio communications within a coverage area divided into cells (“cells”). Each cell has its own rather strong receiver and transmitter, the antennas of which are located on special pads or on the roofs of buildings. When moving the owner of a mobile phone, his phone itself is constantly “looking for” the antenna that sends the strongest signal.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.