MOBILE PHONES PROFESSIONAL ENGLISH IN USE FOR COMPUTER

 

PROFESSIONAL ENGLISH IN USE FOR COMPUTER 29.MOBILE PHONES

 

A Mobile phones: definition and technology Mobile phones, or cellular phones, are devices that enable communication to all types of telephones while moving over a wide area called the coverage area. The term ‘cellular’ comes from the fact that the phone calls are made through base stations, communication towers or antennas, B A brief story §  IG, First Generation phones started in the 1980s when Motorola introduced the first hand=held phones. They used analogue technology and the main drawback was the small number of channels that could be used at a time. C Features and functions Mobiles have become an essential part of our lives and there are many uses for them. EXERCISES 29.1 Complete this text about basic principles of mobile telephone with words from A opposite. Mobile phones, also called (1) ___________ _____________, or cell phones for short, need a network of towers or antennas to transmit calls. In a cellular system, a city is divided into smaller sections or (2) ___________ where the (3) ___________   29.2 Read B opposite and decide if these sentences are True or False. If they are false, correct them. 1. 1G phones had a slower transmission speed than 2G. 2. 2G phones introduced analogue technology. 3. GSM started to be used in the 80s. 29.3 Read C opposite and match the CNET.com phone reviews (1-5) to the descriptions of users who might be interested in them (a-e).

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