A mobile phone is actually a sophisticated radio. It uses radio waves to communicate,.like a walkie_talkie.only one person can talk with a walkie_talkie because it uses one channel and one frequency.The mobile phone uses two frequencies, one for talking and one for listening,and two people can talk at the same time
A mobile phone is actually a sophisticated radio. It uses radio waves to communicate, .like a walkie_talkie.only one person can talk with a walkie_talkie because it uses one channel and one frequency.The mobile phone uses two frequencies, one for talking and one for listening, and two people can talk at the same time