How Many People Use Cell Phones?

Answer

With a popularity that is increasing every single day for the last few years, I would have to estimate that there are billions of people around the world who use cell phones on a regular basis.
1 Additional Answer
While it is nearly impossible to know exactly how many people use cell phones, reports state that approximately 4.1 billion people are subscribed to a mobile phone service. That works out to about 6 out of every 10 people. Look here for more information: http://www.guardian.co.uk/technology/2009/mar/03/mobile-phones1
Q&A Related to "How Many People Use Cell Phones?"
Unless you are an engineering genius, it would be next to impossible not to mention expensive to build a working cell phone. Many cell phone companies offer good deals with a contract
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Cell phones are good to have if you have teen age kids that have a busy social life. It is a great way to keep in touch with them or just text to know where they are.
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Cell phones components are similar to traditional corded phones. The major differences are with the battery and SIM card. The SIM card, or Subscriber Identity Module card is the key
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Doctor Martin Cooper was the lead engineer in the team that developed the technology that is responsible for the modern Motorola cellphone.
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