The Brainliest Answer!
Human relations before the accessibility of Mobile Phones, wasn't very good but we had many other systems of delivering Our messages.
They Were:

1>Through Post-Cards
2>By Telegrams
3>By Trained Pigeons (Very Old-Traditional Way)

Let me start from The First System- (Through Post Cards)
Post cards were made a way back Around 1800s, at that time, only rich people could afford to send a Post Card to their Relatives, Friends etc.
It was used by Dictators, Kings etc. 

2>Through Telegrams
Telegrams were made at the starting of 1900s, They weren't too costly, and on the other hands they were More effective than the Posting Services of that time.
Telegrams reached people in somewhat 3-5 days, And post cards used to take months to reach. So we can regard Telegrams as the 2nd Generation on Multimedia Communication.

3> Through Trained Pigeons
It is a very old method of delivering our messages to our loved ones. This was the first way which we could comuunicate with people living far from us, In this method, as the name suggests, People, Trained pigeons to send messages to their loved ones. Pigeons were trained in such a way that they could send the messages to the desired person, it should be delivered to. We can call this as First Generation Of communication :)

3 4 3
Haha No, I just like to help everyone, if you have any questions please ask me.
Ok :) Thanks again!
I'm glad that people like you are here, cause people here don't care about how much the person Writes,
I copied one of my first answer, which i understood was not allowed now I do all my myself
I'm happy to hear that, and I'm The leader Moderator, here at Brainly, if you got any problems you can send it my way. :)
human beings are very intelligent.they can do anything if they think to do has become very phones have almost changed our early times , we did not had such a advanced technology.we did not had telephones in those times.there was a lot of problems in communicating with others who are very far from us.

the only way was to write letters which is very difficult to post.we cannot inform any thing about our life very fast.we cannot tell our close ones about our problems very frequently.the posting of the letter takes very long.the time taken may be more than one week.this time period is very long.

then the telephone was invented.this invention of telephone made our lives a little more convinient . now , we can call any one we feel like only when we are in our houses.we can not carry the telephone with us which again leads to a great problem.we cannot contact any only when we need help if we are out of our houses.

finally the mobile phones were invented . now we can call any one we feel like . we can carry our mobile phones any where we want to .we can inform our daily updates to our close ones.we can share our feelings with them as well.
mobile phones have made our life very easy and convinient . now , we can call our close ones and also inform our daily updates.