C
Features and Functions
Mobiles have become an essential part of our lives and there are many uses for them
Complete this text about basic principles of mobile telephony with words from A part of the text
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) ___________________________ usually occupy a
central position. When you are outside your service provider’s (4)___________________________
are, your telephone may become out of (5) _________________ unless your telephone allows
(6)_________________________,i.e. the ability to use another service provider’s network
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