Mathematical and Computing Sciences Question #531
christina, a 14 year old female from the Internet asks on January 10, 2002,
Why are portable phones called cellular phones? How do they work?
viewed 16330 times
answered on January 10, 2002
A lot of people think that cellular phones work by satellite, but they don't. Base station radio antennas are placed on tall buidings or towers so that their radio coverage divides a region into geograhic "cells". Each antenna can cover an area of about 10 square miles (26 square kilometers). As you go from cell to cell, the system switches your communication from one base station to another. You can read a lot more about this at How Stuff Works: How cellphones work.
Add to or comment on this answer using the form below.
Note: All submissions are moderated prior to posting.
If you found this answer useful, please consider making a small donation to science.ca.