Consequently, the industry began looking to data-optimized fourth-generation technologies, with the promise of speed improvements up to ten-fold over existing 3G technologies.The first two commercially available technologies billed as 4G were the Wi MAX standard, offered in North America by Sprint, and the LTE standard, first offered in Scandinavia by Telia Sonera.A mobile phone is a portable telephone that can make and receive calls over a radio frequency link while the user is moving within a telephone service area.
These first-generation (1G) systems could support far more simultaneous calls, but still used analog technology.
In 1991, the second-generation (2G) digital cellular technology was launched in Finland by Radiolinja on the GSM standard.
The first handheld mobile cell phone was demonstrated by Motorola in 1973.
The first commercial automated cellular network was launched in Japan by Nippon Telegraph and Telephone in 1979.
All mobile phones have a variety of features in common, but manufacturers seek product differentiation by adding functions to attract consumers.
This competition has led to great innovation in mobile phone development over the past 20 years.
This sparked competition in the sector as the new operators challenged the incumbent 1G network operators.
Ten years later, in 2001, the third generation (3G) was launched in Japan by NTT Do Co Mo on the WCDMA standard.
A handheld mobile radio telephone service was envisioned in the early stages of radio engineering.
In 1917, Finnish inventor Eric Tigerstedt filed a patent for a "pocket-size folding telephone with a very thin carbon microphone".
Most modern mobile telephone services use a cellular network architecture, and therefore mobile telephones are often also called cellular telephones or cell phones.