Cell+Phones+Mkelly

Cell phones work in a very interesting way I have found out through research. The person who invented wireless communication was Nikolai Tesla. The main difference from walkie-talkies is that walkie-talkies are on a half-duplex system which means only one user can talk at the same time and cell phones are full-duplex which uses different signals to transmit data so that 2 users can talk at the same time due to a different signal for both transmitting and receiving. Cell phones are given their name due to the fact that they use different signals chopped into different cells so that you can talk virtually anywhere using different frequencies. The phones use the cells to send data through the frequencies that are operated by different cell service providers to travel to another recipient by using an ESN, a MIN, and a SID.