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Most modern mobile telephone services use a cellular network architecture, and, therefore, mobile telephones are often also called cellular telephones or cell phones.

In addition to telephony, 2000s-era mobile phones support a variety of other services, such as text messaging, MMS, email, Internet access, short-range wireless communications (infrared, Bluetooth), business applications, gaming, and digital photography.

The first commercial automated cellular network was launched in Japan by Nippon Telegraph and Telephone in 1979.

This was followed in 1981 by the simultaneous launch of the Nordic Mobile Telephone (NMT) system in Denmark, Finland, Norway, and Sweden.

Mitchell In 1983, the Dyna TAC 8000x was the first commercially available handheld mobile phone.

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The radio frequency link establishes a connection to the switching systems of a mobile phone operator, which provides access to the public switched telephone network (PSTN).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".

This was followed by 3.5G, 3G or turbo 3G enhancements based on the high-speed packet access (HSPA) family, allowing UMTS networks to have higher data transfer speeds and capacity.

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