The wonder of the 20th century and the reality of the 21st century

The hypothesis
The wonder has
no demerits,
the reality is full
of demerits.

What is the mobile phone ?
2. When was the mobile phone created?
3. How did the mobile phone develop?
4. What illnesses are caused by the mobile phone?
5. What is the mobile etiquette?

is a short-range,
electronic device
used for mobile voice
or data communication over
a network of specialised
base stations known as cell sites.

Dr Martin Cooper
3 April, 1973
Motorola
1.15 kg
23
x
13
x
4

too expensive
too heavy
too big

MOBILE PHONE`S GENERATIONS

inexpensive
small
light

96% of my classmates use
their mobile phones much longer

The most popular mobile phones producers

The distribution by SAR
(Specific Absorption Rate)

?

The mobile etiquette

№1
Speak on the mobile phone in a low voice

№2
Make your mobile phone noiseless during
business meetings,
lessons,
performances,
concerts,
cinema shows

№3
Don`t speak
on the mobile phone and at the same time keep a conversation

№4
In a case of
a missed call which number is on the display, recall only if this telephone number is
well-known for you

№5
Don`t put
your mobile phone on
a table in
a restaurant or café

№6
Take photos
of someone using your mobile phone only if you ask a permission. Respect
the private life of other people

№7
Don`t listen to music too loudly in public places. Not all people share your
music liking

The wonder has
no demerits,
the reality is full
of demerits.