At the moment, the most important communication device in the world has reached 41 years of mobile phone. On April 3, 1973, the first call was made from the mobile phone. Motorola's senior engineer Martin Cooper made the world's first phone call on cellular telephones for the first time. Then now it has changed in the worldly revolution. According to the International Telecommunication Union, released in October 2012, more than 600 million mobile subscriptions have been made worldwide. At that time the world population was 700 million Mike Short, Vice President of Telefonica Europe, a UK telecommunications company, said in a business case Mobile phones have improved rapidly in the last four decades due to mobile phone use. We will see more advanced technologies in the future. These include wearable smart hands, and glasses. Martin Cooper is called the father of the mobile phone. Currently he is 85 years old. In a BBC interview, Martin Cooper said that four decades ago, after mobile innovation, the price was high and the size was bigger. But he knew that one day the price of the mobile phone and the size of the two hands will come in the hands of the people. About four decades ago, the first mobile phone set came in hand. That was the subject of researcher Martin Cooper of Motorola It said, four decades ago, after the mobile innovation, it was worth more and the size was big. But he knew that one day the price of the mobile phone and the size of the two hands will come in the hands of the people. About four decades ago, the first mobile phone set came in hand. It was discovered by researcher Martin Cooper of Motorola Diana TC. Cooper said the first thing with that mobile phone with his rival Bal Labs researcher Joel Engel. Motorelara researcher Martin Cooper and Joel Engel of Bell Labs worked differently for creating mobile phone sets. But finally, the laugh of victory laughs Cooper. Martin Cooper was working in the Motorola company. At that time the Vice President of the company was technologist John Michel. He was one day Cooper Cooper was proud of winning the challenge of John Michelle and his organization Motorola. Martin Cooper succeeded in making Diana TAC on April 3, 1973. It was not like the current lightweight smartphone. The cellular phone weighing one kilogram of gold was 10 inches in length. Once the battery was charged 20 minutes could be used. And too much time to charge the battery. Once known, Brick phone or brick phone. Cooper, the first phone caller on cellular networks, to walk on Sixth Avenue in New York City. The world's first phone call was received by Bell Labs chief researcher Joel Engel. At that time, Joel Engel was working to build a mobile phone in cellular network. This is the first cellular phone conversation in the world to call directly to Joel's office. -Internet.