ICS2O Cell phones
Home
What is a cell phone?
How Does It Work?
Making a call
References
references
http://electronics.howstuffworks.com/
http://www.cellphonecarriers.com/cell-phone-history.html
http://www.fcc.gov/omd/history/radio/quality.html
http://danbricklin.com/log/celltowers.htm
Home
What is a cell phone?
How Does It Work?
Making a call
References