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A mobile phone jammer or blocker is a device which deliberately transmits signals on the same radio frequencies as mobile phones, disrupting the communication between the phone and the cell-phone base station, effectively disabling mobile phones within the range of the jammer, preventing them from receiving signals and from transmitting them.
The antennas contained in mobile phones, including smartphones, emit radiofrequency (RF) radiation ( non-ionizing "radio waves" such as microwaves ); the parts of the head or body nearest to the antenna can absorb this energy and convert it to heat. Since at least the 1990s, scientists have researched whether the now-ubiquitous radiation ...
Mobile device forensics is a branch of digital forensics relating to recovery of digital evidence or data from a mobile device under forensically sound conditions. The phrase mobile device usually refers to mobile phones; however, it can also relate to any digital device that has both internal memory and communication ability, including PDA devices, GPS devices and tablet computers.
Cell phone novel. Cell phone novels, or mobile phone novels ( Japanese: 携帯小説, Hepburn: keitai shōsetsu, Chinese: 手機小說; pinyin: shǒujī xiǎoshuō), were literary works originally written on a cellular phone via text messaging. This type of literature originated in Japan, where it became a popular literary genre.
Mobile phone signal. A mobile phone signal (also known as reception and service) is the signal strength (measured in dBm) received by a mobile phone from a cellular network (on the downlink ). Depending on various factors, such as proximity to a tower, any obstructions such as buildings or trees, etc. this signal strength will vary.
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 ...
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