1. How have mobile phones changed in the last 30 years?

The first mobile phones, referred to as First Generation or 1G, were introduced to the public market in 1983 by the Motorola Company. After a few years, they became mobile and consumers could take the phones with them outside of the car. In 1990 started the 2G, the first cell phone call was made using the new digital technology that became characteristic of this era. The Second Generation cellular phone technology was faster and much quieter than its analog predecessor. Smaller batteries and other technology that made the phones more energy-efficient helped contribute to their smaller sizes and their popularity. The Third Generation technology, or 3G, is what many people currently use in their digital cellular phones today.