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A satellite phone is a type of mobile phone that connects to other phones or the telephone network by radio link through satellites orbiting the Earth instead of terrestrial cell sites, as cellphones do. Therefore, they can work in most geographic locations on the Earth's surface, as long as open sky and the line-of-sight between the phone and ...
A mobile phone or cell phone [a] 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, as opposed to a fixed-location phone ( landline phone ). The radio frequency link establishes a connection to the switching systems of a mobile phone operator, which ...
On April 3, 1973, he placed the first public call from a handheld portable cell phone while working at Motorola, from a Manhattan sidewalk to his counterpart at competitor Bell Labs. [4] [5] Cooper reprised the first handheld cellular mobile phone (distinct from the car phone ) in 1973 and led the team that re-developed it and brought it to ...
Driving with your cell phone can be deadly: Using a phone or portable electronic device while driving increases the risk of crashing by 300%. The average time your eyes are off the road when ...
A phone cage used for keeping students' phones away from them during school hours. The use of mobile phones in schools has become a controversial topic debated by students, parents, teachers and authorities. People who support the use of mobile phones believe that these phones are useful for safety, allowing children to communicate with their ...
United States – Laws regarding cell phone use while driving are set state by state. While no state bans the use of all cell phones for all adult drivers of non-commercial vehicles at all times, many states ban all cell phone use by young drivers and/or commercial drivers. Many states have a combination of bans of texting and hand-held cell ...
Problematic smartphone use is psychological or behavioral dependence on cell phones. It is closely related to other forms of digital media overuse such as social media addiction or internet addiction disorder . Commonly known as " smartphone addiction ", the term "problematic smartphone use" was proposed by researchers to describe similar ...
Cell phone usage. Cell phone usage behaviors that do not contradict intimate moment are viewed as positive violations, including sharing interesting messages and playing online games together. People have less negative valence on cell phone usage if they gain more reward from the behaviors.