CellPhones did not exist in the 19th century but today they are everywhere.
Cellphones only came around in the 20th century but became very popular very quickly.
People now days cant live without a cellphone unlike the people before the 20th century.
"CellPhones did not exist in the 19th century but today they are everywhere." This explains that cell phones were only invented after the 19th century but it has become normal for everyone to have one nowadays.
"Cellphones only came around in the 20th century but became very popular very quickly." This explains that Cellphones were invented in the 20th century so are fairly new but most people have one.
"People now days cant live without a cell phone, unlike the people before the 20th century." This explains that people rely on cell phones for their daily lives but people before the 20th century didn't do this.
"CellPhones did not exist in the 19th century but today they are everywhere."
（携帯電話は19世紀には存在していなかったが、現在ではどこにでもある）
これは携帯電話は19世紀以降に初めての発明されたが、今現在では普通に誰でも手にしているという事を説明しています。
"Cellphones only came around in the 20th century but became very popular very quickly."
（携帯電話は20世紀に出回り始めましたが、普及するのはとても速かった）
これは携帯電話は20世紀に発明されたてとても新しい物だけどほとんどだれもが持っている、と説明しています。
"People now days can't live without a cell phone, unlike the people before the 20th century."
（現在の人は携帯無しでは生活できません、20世紀以前の人の様に）
これは現在の人々は毎日の生活に携帯電話は欠かせないものですが、20世紀以前の人々はそうではなかった、と言う説明です。
In the 19th century Cell phones were a pipe dream...today they are a leading technology
Almost everything is done on the moble phone these days...its hard to believe how we could get along with out them.... Yet not so long ago they were just a "pipe dream" ...an imagined future...Today they are ubiquitous and considered to be "a leading technology:"
"In the 19th century Cell phones were a pipe dream...today they are a leading technology"
現代はほとんど全ての事を携帯電話で済ますことが出来ますね。
これら無しでどのようにやっていったらいいのか、信じられませんね。
しかし、ちょっと前まではそれらはただの"pipe dream"（幻想）でした。
想像の未来。
現在、携帯はどこにでもあり "a leading technology"（先導的技術）と考えられています。
【例】
"In the 19th century Cell phones were a pipe dream...today they are a leading technology"
（19世には携帯電話は幻想でしたが、今日はこれらは先導的技術です）
Mobile phones didn't exist in the 19th century, nowadays we cannot live without them.
Since mobile phones were invented, they have become very advanced and now we use them for everything.
This phrase explains that people did not have mobile phones in the 19th century but now we do, we cannot live without them. We like to use our phones for everything we do in every day life, e.g. diary, communication, photos, etc.
It is hard to think about a life without a phone. Which is why many people say -
"I can't live without my phone"
"I'm lost without my phone"
この表現で、19世紀には携帯電話は存在していなかったが、現在私たちは携帯電話無しでは生活できない、と言う説明になります。
私たちは毎日の生活の色々な事に携帯電話を使用します。
【例】 diary（日記）, communication（連絡のやり取り）, photos（写真）, etc.
携帯電話がない生活は考えられないですね。
なので人々は次のように言ったりします。
"I can't live without my phone"
（携帯無しでは生きられない）
"I'm lost without my phone"
（携帯が無かったら途方に暮れてしまう）
Cellphones were nonexistent in the 19th century but now they are proliferant
Unlike the 19th century, cellphones now form part of our everyday lives.
Proliferant - abundant Nonexistent - not existing or not real or present, imaginary, imagined, unreal, fictional, fictitious, made up, invented, hypothetical, suppositional, fancied, fanciful; fantastic, fantasy, mythical, mythological, legendary; illusory, illusive, hallucinatory, chimerical, figmental, notional, shadowy, spectral, ghostly, insubstantial; missing, absent; rarephantasmal, phantasmic; inexistent, illusionary, unsubstantial "She pretended to tie a non-existent shoelace." "She carefully brushed a non-existent piece of lint from her skir.t"
Proliferant - 豊富な、たくさんのと言う意味になります。
Nonexistent -存在しない、実在しない、現実でないなどの意味になります。
【例】
"She pretended to tie a non-existent shoelace."
（彼女は目に見えない靴ひもを結んでるふりをした）
"She carefully brushed a non-existent piece of lint from her skirt"
（彼女はスカートの存在しない糸くずを丁寧にブラシをかけた）
Cellphones were not around in the 19th century, but now they are part of everyday life.
In the 19th century, no one had ever heard of a cellphone, but today no one call live without one.
"Cellphones were not around in the 19th century, but now they are part of everyday life."
'Not around' is a casual way of saying that something did not exist. In this instance, it is that the cell phone did not exist in the 19th century. In contrast this sentence states they are now something we use all the time.
"In the 19th century, no one had ever heard of a cellphone, but today no one call live without one."
No one had ever heard of the idea of something that you could carry with your and talk to a person on the other side of the world, was a strange idea. It was something not really talked about or heard about.
"Cellphones were not around in the 19th century, but now they are part of everyday life."
'Not around'とは、何かが存在しなかったことを表すカジュアルな表現です。この例では、携帯電話が19世紀に存在しなかったという意味です。対照的に、この文章では携帯電話は今では私たちが常に使っている物であると言っています。
"In the 19th century, no one had ever heard of a cellphone, but today no one call live without one."
持ち運びができ、世界の反対側にいる人と話ができる物は、誰も聞いたことがなく、不思議な考えだったでしょう。話したこともなければ、聞いたこともなかったものでしょう。
Cell phones/mobile phones were non- existent in the 19th century, but now widely used and with advanced technology
*Cell phones/mobile phones were non- existent in the 19th century, but now widely used and with advanced technology. - Non-existent simply means does not exist. 19th Century are the years that range from 1 January 1801 – 31 December 1900. Currently we live in 21st century.
example
"Mobile phones did not exist in the 19th Century"
or
"Mobile phones had not been invented in the 19th Century"
or
"We have advanced so much when you think that mobiles hadn't even been invented in the 19th Century"
"Mobile phones did not exist in the 19th Century"
携帯電話は19世紀には存在しなかった。
"Mobile phones had not been invented in the 19th Century"
携帯電話は、19世紀には発明されていなかった。
"We have advanced so much when you think that mobiles hadn't even been invented in the 19th Century"
19世紀に携帯電話がなかったことを考えると私たちは、すごく進歩した。
Technology has made great strides since the ninteenth century, take the cellphone for example.
Tewentieth century technology like the cell phone continue to become more advance and innovatative and have formed a part of our every day lives.
When describing the advancement of technology there are many wonderful words we could use to express ourselves such as;
strides(noun)- Making good progress.
innovative-more advanced methods or products.
In addition to that one may also make use of descriptive words such as evolution, development, and growth.
Cell phones didn't exist in the 19th century but now they are a huge part of society.
Cell phones didn't exist in the 19th century but now they are a huge part our lives.
Society didn't have cellphones in the 19th century but now they are a huge part our lives.
In the first two examples we can see that we can interchangeably talk about, "society," and, "our lives," because we are both refer to everyone in the world today. We can also use society as the head of the sentence when referring to what, "they didn't have," back in the 19th century.
南アフリカ 
イギリス 
アメリカ合衆国 
