Question

few lines on when there were no mobile phones

Answer 1

When there were no mobile phones people used to communicate through the letters and they used to send their letters through birds. But now we are in very advanced generation so why u want to know about past...
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Answer 2

Human beings have always had a way of communicating throughout history. Below are some of the ways that were used to communicate before the invention of cellphones.

Smoke signals - communicating with people from distant land would take place through smoke signals that could be understood by both the senders and receiversMessengers - there is also a period in history when a messenger on horse or on foot would be sent from one region to another with messagesLetters - writing letters on paper by the use of pencils or pens was a common practice just before mass production of phonesTelegrams - the telegram was a machine used to type messages in one location and then sent to a different location. It could only send a limited amount of words in a given period of timeLandline phones - before the invention of cellphones, human beings would use landlines to communicate. Now used less frequently, these are essentially telephones that are connected through wires and are situated in definite locations