Page 109 - Are You Future Ready?
P. 109
Chapter One - To Know the Present
Through the Past
Today
Regarding the second generation of mobile communication
(2G), although it was still mainly for voice calls, it used a
digital system, which meant that the message was turned
into "0" and "1", supporting data such as short message
transmissions, and fixing the deficiency of being easily
eavesdropped on in an analogue phone. Hong Kong
uses the European GSM technical specification, which is
different from Japan and the U.S. Therefore, Hong Kong
users had to switch their handsets to keep in contact when
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they were in these countries.
Ten years ago, the mobile internet and social networks
became popular with smartphones, enabling third
generation (3G) and fourth generation (4G) mobile
communication technologies to take off.
The fifth generation (5G) of mobile technology is the
communication between people and people, people
and machines (or objects), and among things (that is, the
internet of things). The 5G network is fast and reliable for
