Essay On Cell Phones

Examples of smartphones include Apple's i Phone (which uses i OS software) and Samsung's Galaxy series, one of many phones that use the Android platform made by Google.Proponents of cell phones believe that the devices are beneficial to society because they increase communication and activism; conversely, opponents of cell phones believe that this technology reduces social skills, are carcinogenic, and the mineral in most cell phones, coltan, is causing wars abroad.The phenomenon of cell phones, particularly social networks on apps within cellular devices, has taken the modern world by storm.It is usually impossible to switch to a different network's code on this type of phone.The majority of these CDMA phones are used in the United States and nearby countries.The first cellular mobile phone networks were created in 1979 in Japan. Once connected to a station, the mobile phone can make calls.Now almost all urban areas, and many country areas, are covered by mobile phone networks. They send electromagnetic microwaves from base station to base station. Because the network knows that the phone is connected to that particular cell, it can also route calls to the mobile phone.GSM phones need a separate microchip, called a Subscriber Identity Module or SIM card, to work.The SIM has information like the phone number and payment account and this is needed to make or receive calls.The others have a special radio inside them that only makes phone calls when the phone is activated.When someone buys a contract, the network gives them a code, that if they enter it into the phone, the phone will then make calls.

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