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A mobile phone is a wireless communication device that operates through a network of broadcast towers distributed to cover a certain area, then connected via fixed lines or satellites.As for the properties of the mobile phone, it consists of a receiving and sending circuit, a central and subsidiary processing unit, RAM and flash to store information and can Writing short messages and enjoying the features of the mobile phone, which are:

Contacting and seeing others through the new generation of dct4 devices equipped with accurate cameras.The main principle of the mobile phone depends on a receiving and sending circuit via vibration signals via ground transmission stations, including satellite, just like radio signals, but the cell phone and its ground networks differ from them and vibration signals such as an ascending and descending heart rate, which are very strong, reaching 20 MHz in transmission and reception per second.As for the method of communication, it is through an integrated circuit located in the personal mobile phone and the company's main switch and the line (SIM card), which is a small card with a very small and precise storage unit and a processing unit that stores the user's data that he uses to communicate with others.It is worth noting that several studies have been issued about the mobile phone confirming that exposure to large broadcast oscillations or placing the phone itself next to the human heart, for example, may harm its health and sometimes lead to malfunctions in pacemakers.Exposing the body to health risks, including radiation, and the risks resulting from radiation from mobile phones should not be tolerated or underestimated.wav.

A mobile phone is a wireless communication device that operates through a network of broadcast towers distributed to cover a certain area, then connected via fixed lines or satellites. With the development of these devices, they have become more than just a means of voice communication. They are like a laptop, for example, recording appointments, receiving voice mail, browsing the web, and taking pictures. Mobile phones have also become a means of advertising. Due to the competition between telecommunications network operators, the cost of calls and data exchange has decreased for nine more segments of society, and mobile phones have expanded to remote areas. So the number of users of these devices has been constantly increasing to replace fixed communication devices. Its history dates back to 1947 when Lucent Technologies began experiments in its laboratory in New Jersey, but it was not the owner of the first portable cell phone. Rather, the owner of this achievement was the American Martin Cooper, a researcher at Motorola Communications in Chicago, where he made the first call on April 3, 1973. The main principle of the mobile phone depends on a receiving and sending circuit via vibration signals via ground transmission stations, including satellite, just like radio signals, but the cell phone and its ground networks differ from them and vibration signals such as an ascending and descending heart rate, which are very strong, reaching 20 MHz in transmission and reception per second. As for the method of communication, it is through an integrated circuit located in the personal mobile phone and the company's main switch and the line (SIM card), which is a small card with a very small and precise storage unit and a processing unit that stores the user's data that he uses to communicate with others. As for the properties of the mobile phone, it consists of a receiving and sending circuit, a central and subsidiary processing unit, RAM and flash to store information and can Writing short messages and enjoying the features of the mobile phone, which are:

Contacting and seeing others through the new generation of dct4 devices equipped with accurate cameras.
SMS can be sent to anywhere in the world.
Entertaining with games and modern Java games.
Listening to audio files with different extensions (such as ogg. wav. mp3) and listening to the radio and voice recorder and other games shared between devices and over the network lines.
It is worth noting that several studies have been issued about the mobile phone confirming that exposure to large broadcast oscillations or placing the phone itself next to the human heart, for example, may harm its health and sometimes lead to malfunctions in pacemakers.

The mobile phone has developed so much that there are now mobile phones in the form of a wristwatch as in old science fiction movies and contain all the capabilities of smart mobile phones such as Internet service and satellite location service and all other services. After years of using the mobile phone, the advantages and disadvantages of using the mobile phone have emerged.

Pros
Contacting anyone whose mobile phone number you know or who can contact you. Whether you are in your country or outside it, via voice chat, directly, text messages, or sending multimedia to send pictures and get information such as news, flight schedules and many more features.

Most mobile phone service providers are limited to using the Internet and email.

Disadvantages
Many of its users are busy playing games and browsing the Internet instead of work and study.

Exposing the body to health risks, including radiation, and the risks resulting from radiation from mobile phones should not be tolerated or underestimated. A study has reached negative results for mobile phone users, as it discovered the damage caused by the phone by identifying the biological changes caused by its waves in the performance of the body's cells. A radiology expert said that the waves emitted by the mobile phone affect in one way or another the protein system (vimentin) found in the cells of the human body, which exposes these cells to changing the way they work and their effectiveness. He added that mobile phone waves can change the function of cells, which leads to disruption or causing chemical tensions in the cell structure, which contributes to the possibility of developing cancerous tumors, especially in the brain area. Radiation from cell devices directly affects the actin protein, which is one of the main parts of the cell and its structure. A new American study from the University of Washington warned experts of the dangers of children using mobile phones. They recommended not leaving the mobile phone in the hands of young children as a toy because brain cells at this age grow rapidly, and their exposure to electromagnetic waves leads to health risks. They explained that children are the age group most affected by exposure to electromagnetic waves, especially in the head area, stressing that electromagnetic waves may have negative effects on the child and the fetus. They also stressed that pregnant mothers should not be exposed to mobile phone waves intensively until it is proven that its use is safe.