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Mobile / Wireless / Cellular Service
Wireless communication is the transfer of information between two or more points that are not connected by an electrical conductor.
The most common wireless technologies use radio. With radio waves distances can be short, such as a few meters fortelevision or as far as thousands or even millions of kilometers for deep-space radio communications. It encompasses various types of fixed, mobile, and portable applications, including two-way radios, cellular telephones, personal digital assistants (PDAs), and wireless networking. Other examples of applications of radio wireless technology include GPSunits, garage door openers, wireless computer mice, keyboards and headsets, headphones, radio receivers, satellite television, broadcast television and cordless telephones.
Somewhat less common methods of achieving wireless communications include the use of other electromagneticwireless technologies, such as light, magnetic, or electric fields or the use of sound.
The term wireless has been used twice in communications history, with slightly different meaning. It was initially used from about 1890 for the first radio transmitting and receiving technology, as in wireless telegraphy, until the new wordradio replaced it around 1920. The term was revived in the 1980s and 1990s mainly to distinguish digital devices that communicate without wires, such as the examples listed in the previous paragraph, from those that require wires. This is its primary usage today.
LTE, LTE-Advanced, Wi-Fi, Bluetooth are some of the most common modern wireless technologies.
A mobile phone is a telephone that can make and receive calls over a radio frequency carrier while the user is moving within a telephone service area. 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). 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 totelephony, modern 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 photography. Mobile phones which offer these and more general computing capabilities are referred to as smartphones.
The first handheld mobile phone was demonstrated by John F. Mitchell[1][2] and Martin Cooper of Motorola in 1973, using a handset weighing c. 4.4 lbs (2 kg).[3] In 1983, the DynaTAC 8000x was the first commercially available handheld mobile phone. From 1983 to 2014, worldwide mobile phone subscriptions grew to over seven billion, penetrating 100% of the global population and reaching the bottom of the economic pyramid.[4] In 2014, the top mobile phone manufacturers were Samsung, Nokia, Apple, and LG.[5]
Newark
Newark (/ˈnuː.ərk/[23] or also locally /nʊərk/[24]) is the most populous city in the U.S. state of New Jersey and the seat of Essex County.[25][26] As one of the nation’s major air, shipping, and rail hubs, the city had a population of 277,140 in 2010, making it the nation’s 67th most-populous municipality, after being ranked 63rd in the nation in 2000.[14] For 2015, the Census Bureau’s Population Estimates Program calculated a population of 281,944, an increase of 1.7% from the 2010 enumeration,[13] ranking the city the 70th largest in the nation.[27] Newark is the second largest city in the New York metropolitan area, located approximately 8 miles (13 km) west of lower Manhattan.
Settled in 1666 by Puritans from New Haven Colony, Newark is one of the oldest European cities in the United States. Its location at the mouth of the Passaic River (where it flows into Newark Bay), has made the city’s waterfront an integral part of the Port of New York and New Jersey. Today, Port Newark-Elizabeth is the primary container shipping terminal of the busiest seaport on the American East Coast. In addition, Newark Liberty International Airport was the first municipal commercial airport in the United States, and today is one of its busiest.[28][29][30]
Several leading companies have their headquarters in Newark, including Prudential, PSEG, Panasonic Corporation of North America, Audible.com, IDT Corporation, and Manischewitz. A number of important higher education institutions are also located in the city, including the Newark campus of Rutgers University (which includes law and medical schools and the Rutgers Institute of Jazz Studies); the New Jersey Institute of Technology; and Seton Hall University’s law school. The U.S. District Court for the District of New Jersey sits in the city as well. Local cultural venues include the New Jersey Performing Arts Center, Newark Symphony Hall, The Prudential Center and the Newark Museum.
Newark is divided into five political wards; the East, West, South, North and Central wards and contains neighborhoods ranging in character from bustling urban districts to quiet suburban enclaves. Newark’s Branch Brook Park is the oldest county park in the United States and is home to the nation’s largest collection of cherry blossom trees, numbering over 5,000.[31][32][33][34]