mmersCell phone jammers transmits low power radio signals to cut off communications between cell phones and cell phone base stations. It does not interfere with any communications other than cellular phones with in defined regulated zone. Upon activating a cell phone jammer‚ all idle phones with indicate "no network". Imcoming calls are blocked as if the cellular hand phone were off. When the phone jammer turn off‚ all cell phones will automatically re-establish communications and rrovide full
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NO CELL PHONES FOR KIDS Cell phone is considered as an important thing in human life nowadays. We no longer rely on public phones that once we did. The cell phones users are not only people that come from the working class‚ but also children. Is cell phone really that important? There are a lot of disadvantages of using mobile phones which involves children from age six until thirteen. Some people might think that kids should have cell phones. However‚ I do believe that kids should not have cell
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Are Cell Phones Safe? Lately‚ there has been a lot of question about whether or not cell phones are safe. Many people think mobile phones can cause brain cancer‚ brain tumors‚ or other harm to your body. Others might say that cell phones are safe to use. I think cell phones are safe. Some people might tell you that cell phones are not safe while you drive. This can be true but it also can be incorrect. There are different ways to make your phone safer in the car. For example‚ you could use
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Cell Phones are dangerous Cell phones have consistently evolved both in function and design ever since Dr.Martin Cooper first invented the wireless handset in 1973. In those days‚ cell phones were merely used to make calls and store numbers. Contemporarily‚ the cell phone has evolved into a multifunction device with heterogeneous functions added including video camera‚ text messenger and so forth. As a result‚ this has changed in the way people use the cell phone. Despite all the obvious benefits
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Effects of Cellular Phones and Teenagers Daniella D. Baca October 27‚ 2010 J.T. Humber Effect of Cellular Phones and Teenagers Technological advances have increased dramatically in the past 40 years. Martin Cooper invented the first cellular phone in 1973‚ which was called the Dyna Tec‚ while working for the famous company Motorola (“Want to Know It”).The first cellular phone did not sell well because it was as large as a brick (“Want to Know It”). So now knowing how technology has advanced
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idea of a cell phone has been around since the nineteenth century. A cell phone is also referred to as a mobile phone‚ or a cellular device. The first cellular device was invented in 1973 by Martin Cooper. This mobile telephone was the size of a brick! Ever since this invention‚ the cell phone has become the most prevalent piece of technology. Nowadays‚ the majority of people in the world possess a cell phone. One country in particular that is very popular when it comes to cell phones is the United
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Is Cell Phone Radiation Really Harmful? With sixty percent of the world’s population using cell phones‚ recent concern has risen from the medical front concerning the harmful effects of cell phone use. All scientific research has concluded that mobile phones do produce RF energy and emit electromagnetic radiation. Studies have also concluded that high levels of RF energy can be harmful to human health. However‚ all scientific studies have not agreed if the levels of RF energy emitted from modern
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CELLULAR PHONES Each day something like 30‚000 people in the United States sign up for and start using a cellular phone. With a cell phone you can talk to anyone on the planet from just about anywhere (80% of the U.S. has coverage). A cell phone is really an extremely sophisticated radio. A cell phone is a duplex device which uses one frequency for talking and a second‚ separate frequency‚ for listening. A cell phone can communicate on 1‚664 channels and operate within cells. They can switch cells
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Are Cell Phones Dangerous? Ninety-one percent of American adults and sixty percent of teens own this device that has revolutionized communication in the 21st century — the cellphone. While cell phones provide an efficient and easy way to communicate with friends‚ family‚ and co-workers‚ excessive use can take a toll on your health. Twenty-three percent of auto collisions involved cell phones last year‚ that’s a little more than one million crashes. Also‚ leading scientists are saying that cell
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The Use of Cell phone Mobile phone use has become a very common phenomenon‚ and people mostly depend on cell phones for communication. The cell phone is probably the most accepted and widely used communication devices in nowadays. A mobile phone is a phone that can make and receive telephone calls over a radio link while moving around a wide geographic territory (Wikipedia). Cell phone has influenced people’s lives in many different ways: Provides communicate with friends‚ family‚ and coworkers
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