![]() ![]() In addition to telephony, digital mobile phones support a variety of other services, such as text messaging, multimedia messagIng, email, Internet access (via LTE, 5G NR or Wi-Fi), short-range wireless communications ( infrared, Bluetooth), satellite access ( navigation, messaging connectivity), business applications, video games and digital photography. Modern mobile telephone services use a cellular network architecture and, therefore, mobile telephones are called cellular telephones or cell phones in North America. 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). Two decades of evolution of mobile phones, from a 1992 Motorola 8900X-2 to the 2014 iPhone 6 PlusĪ 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. ![]()
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