How was the cellphone originally made?

Answer 1

1. In the 1930s the car radio phone was developed and put in service in several large cities. Even in cities that had dial phone exchanges all car radio phone calls were made through the operator and it was not uncommon to have to wait a half hour to connect to an operator to make a call. This system could not handle more than 3 to 12 total calls in one city, depending on the transmitter/receiver designs used.
2. While working on solutions to the limit of 3 to 12 calls in one city, in 1947 Bell Labs researchers developed the concept of cellular communication, where an area would be divided into hexagonal cells and calls would be handed off from tower to tower as the car radio phone moved from one cell to another. However it was decided that the vacuum tube based electronics of the time could not meet the requirements of a cellular system, so A. T. & T. did not attempt to make cellular car radio phones.
3. In 1969 A. T. & T. decided the semiconductor based electronics of the time could meet the requirements of a cellular system, so they began negotiations with the FCC for radio bandwidth allocation and began the design of cellular car radio phones (they had no plans to attempt designing handheld cellphones).
4. In 1971 Motorola designed the first handheld cellphone. However mostly due to limitations of the rechargeable batteries of the time, this cellphone was about the size and weight of a brick and the batteries ran down in about an hour. It proved that handheld cellphones were possible, but itself was not really practical for use by the public.
5. In the 1980s and 1990s improvements in miniaturization of electronics and batteries with more capacity gradually made the handheld cellphone truly practical. By the end of the 1980s the now obsolete original car radio phone systems were all shutdown and replaced with cell towers, although car cellphones remained in use for a while where calls still had to be made through an operator (safer than dialing while driving).

Answer 2

Actually, the idea came in the 1920's with police radios and then was developed further in 1947 by Bell labs. The man given the most credit for the cell phone is Dr. Martin Cooper working for Motorola in 1973 made a cell phone very much like the ones we have today. They were sold to the public in 1983.

Answer 3

In 1947 Bell labs made the first cell phone prototype. The idea of a mobile phone had been around since the 1920's when police radios were in use. Finally, in 1973 Dr. Martin Cooper of Motorola created a cell phone that was usable. It was sold to government projects/offices and in 1984 the first cell was sold to the general public. It was large and heavy and looked like a home phone, but was in a bag with a large battery.

Answer 4

In the 1930's the idea of cell phones began with the use of police radios, but the first one was made by Bell Labs in 1947. Dr. Martin Cooper took it to another level in 1974 when he made the first true cell phone for Motorola, but it wasn't until 1984 that the first cell phones were sold to the public. At that time they were large with a big battery and calls were not clear nor would go through at all times. Very few cell phone towers were around and the phone plans were expensive to use.