Urduca

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

İngilizce

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

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Urduca
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