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Ex on Mobile phones

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Ex on Mobile phones

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Recommended age: 18 years old
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Ex on Mobile phonesOnline version

Ex on Mobile phones

by Liliya Zaripova
1

Mobile phones, or cellular phones, need a network of towers or antennas to transmit calls.

2

In a cellular system, a city is divided into smaller sections, where the base stations usually occupy a central position.

3

Roaming is the ability to use another telephone company.

4

1G phones had a slower transmission speed than 2G.

5

2G phones introduced analogue technology.

6

GSM started to be used in the 80s.

7

Smart phones can be used for other purposes, e.g. as a personal digital assistant.

8

UMTS, the standard used in 3G phones, has made multimedia transmissions common nowadays.

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