Mobile Phone (1954)
Some important years in the mobile history,
- 1955 introducing the worlds first whole automatic mobile-phone system.
- 1972 A global system is presented. Covers all the oceans of the world.
- 1978 introducing the worlds first person searching-system with a number-display.
- 1981 The world’s first automatic and boundless mobile-phone system.
- 1986 First time when you can transfer computer services via a mobile system.
- 1988 The pocket-phone is introduced.
Growing up in Chicago, Martin Cooper earned a degree in electrical engineering at the Illinois Institute of Technology. Later hired by Motorola in 1954, he lead a group of research team to develop the first ever portable phone, the Motorola Dyna Tac, which stands for Dynamic Adaptive Total Coverage. Weighing 1089 gram, the first commercially viable version of the Dyna Tac was released in 1983. It measures 9 x 5 x 1.75 inches in size with 30 circuit boards. Unlike handsets today, there was no display available and the only feature was call, dial and listen (what else would you expect?). The heavy batteries can only withstand 35 minutes of talk time and need a long 10 hour recharge.