This document discusses the positive and negative effects of using handphones. Positively, handphones facilitate communication, add to technological knowledge through internet access, and expand social networks. However, they can disrupt child development if misused in school, expose users to radiation, make users vulnerable to crime, influence behavior negatively if uncontrolled, and be a waste of time and money. To mitigate risks, the document recommends using hands-free options, limiting use indoors and for children, and turning phones off when not in use.

1. Positive and Negative
Effect of Using
Handphone
By group 6 Class 9C :
Ignatius Yosef – 21/9C
Irena Nathania – 22/9C
Johanes Ary – 23/9C
Jovani Debora – 24/9C

2. Why we choose this topic ?
• These days people especially children and students have
dependence of hand phone.
• So, we want to notify the positive and negative effects of
using hand phone, then we can refuse the negative one and
use the phone wisely.

3. History of mobile phone
• In 1910 the precursor cell phones were found by Lars Magnus
Ericsson from the company Ericsson
• In 1921 mobile phone was used in police cars
• In 1969, a mobile telecommunications system
commercialized.
• After 1970, mobile telecommunications are increasingly being
talked about. Motorola is the first company that displayed the
phone in public.

4. • Initially, mobile phone was used to talk to someone in
another place. But now it is getting more advanced.
• In addition to being a telephone, modern hand phones also
support many additional services and accessories, such as
SMS messages, e-mail, Internet access, gaming, Bluetooth
and infrared short range wireless
communication, camera, MMS messaging, MP3
player, radio and GPS those give people comfort.

5. Positive Impact :
1. Facilitate communication.
Hand phone is the practical one of telephone. It can help us
to talk to someone who is far from us in everywhere.
2. Adding knowledge about the development of technology.
Modern hand phone has an internet access. We can browse
and get many information fast from our phone.
3. Expanding the network of friendship.
By SMS messages we can often communicate with our
friends.
4. Entertaining
game, mp3 player, camera and others applications can
entertain you and spend your spare time.

6. Negative Impact:
1. Disruptive Child Development
The bad things a student can do with handphone are cheating
in replication, playing games while the teacher explains the
lesson and so forth. If it is allowed, then the generation that we
hope will become slaves to technology.
2. Radiation effects
Radiation can make us feel dizzy, the worst impact of it is
cancer. If it is not really necessary, the children should not be
given the opportunity to use hand phone permanently.

7. 3. Vulnerable to crime
Remember that student is one of the main targets of the
criminals. Students are not strong enough to fight or to ask a
help. They are also easy to be tricked.
4. Very potentially affect students' attitudes and behavior
If there is no control from teachers and parents. Hand phone
can be used to deploy images containing pornographic
elements and so did not deserve a student.
5. Extravagance
By having a hand phone, then we will increase spending time
and money , especially if the hand phone is only used for
things that are not useful such as cheating and gossip, they
would be a waste.

8. To avoid the risk of radiation effects,
all hand phone users should notice :
• Use a hand-free headset when you call someone
• Use hand phone in the open air as often as possible
• Reduce to use hand phone in the building
• Do not let children use it often
• Turn off the phone while you are sleeping
• Do not put your hand phone in your pocket, but put it in your bag
• If you want to make a long conversation, try to not use mobile
phone

9. Conclusion and Suggestion
Mobile phone was used to call someone in another place.
These days, Handphone is one of the important things in our
life. It has many features, it is so useful. But, it has positive and
negative effects of its using. Handphone can expand our
network of friendship and adding knowledges about the
development of technology but it can disruptive our
development and give radiation too. The effects depend on how
we manage to use it. So let us make handphone a good
appliance by use it wisely!

10. Thank you