Work done by: Daniela Silva – nº7 – 10º2 Joana Martins – nº13 – 10º2 Slide 3 What are a ? Slide 4 Who invented the mobile phone? Slides 5,6,7 The evolution of mobile phone; Slides 8,9 Advantages of mobile phone; Slides 10,11,12 Disadvantages of mobile phone; Slide 13 Curiosities.

A mobile phone (also known as a cellular phone, cell phone, hand phone, or simply a phone) can make and receive telephone calls over a radio link while moving around a wide geographic area. It does so by connecting to a provided by a mobile phone operator, allowing access to the public telephone network. By contrast, a cordless telephone is used only within the short range of a single, private base station.

Who invented the cell phone? The person responsible for inventing the cell phone is Doctor . He invented the technology for the cell phone when he was the Director of Research and Development at . 1 2 3 4

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14 • 1 - 1973 – The first cell phone • 2 - 1984 – Nokia Mobira Talkman • 3 - 1989 – Motorola MicroTac before • 4 - 1992 – Motorola International 3200 • 5 - 1994 – Motorola 2900 BagPhone • 6 - 1996 – Motorola StarTac • 7 - 1996 – Nokia 8110 • 8 - 1996 – Nokia 9000 Communicator • 9 - 1998 – Nokia 5110 now • 10 - 1999 – Nokia 8210 • 11 - 2002 – RIM BlackBerry 5810 • 12 - 2002 – Sanyo SCP – 5300 • 13 - 2002 – T-Mobile SideKick • 14 - 2004 – Motorola Razr V3 • 15 - 2007 – Apple iPhone • 16 - 2014 – iPhone 6 and Samsung Galaxy s5

• Helpful in Emergency: You are driving by the freeway and the vehicle jams and Mobile Phone comes to your rescue.

• Texting: You can get texting capabilities on a cell phone, which is great for certain, situations when in a public place. You might not want everyone else hearing your conversation. Also, everyone else might not want to hear your conversation, especially in a crowded restaurant or in a store. Texting can me a great way to keep in touch with relatives and friends all over the world. • Connecting people: Parents can be a little less worried about their kids by being in constant touch with them.

• Use for : If you’re a net user, you can have Internet handy all the time and anywhere the signal of your Mobile Phone provider can reach.

• Role in Economy: From the and economy point of view, Mobile Phone companies (communication industry) are flourishing with market capital in billions. This is a good thing for the economy to be smooth and healthy. • Negative effect on health: The continuous exposure of signal to and from our Mobile Phone can be a cancer concern, although to a meager amount research is still going on. However, the mobile phone industry has long resisted any suggestion of a link to cancer, though it accepts that mobile phone radiation does affect the electrical activity in the brain.

• Home for microorganism: The surface of a cell phone has millions of bacteria and virus on it and that can be a strong reason of immediate skin problem on face or can result into other internal infections where in the microbes creep inside the body through mouth or other openings; • Increase expenses: Cell phone monthly bills are usually more than a landline bill. Sometimes, we may not require having a Mobile Phone but we still buy one and start paying monthly bills; so it increases our monthly/recurring expenses;

• Time Distraction: Some people (especially teens) get so much addicted to Mobile Phone for talking, video, messaging, games, etc. that they forget the real purpose of the phone and waste large part of their time in unnecessary Interaction over their cell phones;

• Unexpected phone calls: You may receive calls when you are in the middle of something. If you are compelled to take the call, it can be rather disrupting. Or while remaining in touch is good thing but sometimes it becomes annoying to have to deal with continuous incoming phone calls.

• Use in Classroom and Examination hall: Nothing more can be a distraction for a teacher in the classroom, when a student’s phone rings. Mobile Phone is increasingly becoming a problem for the schools during classroom hours and is becoming a means of cheating during examinations and other kinds of ability tests. All this is really bad and does hurt the future of the student, who doesn’t realize that he/she is him/her-self responsible for it.

• Dangerous in driving: A mobile phone can be helpful while driving and talking in cause of urgent matters but increasingly it is becoming cause of accidents because it deviates the attention of a driver;

Curiosities • The first call made from a mobile phone has been made on 3 April 1973;

• In Portugal, the mobile phone penetration rate exceeded 100%, in other words, there are more equipment than Portuguese habitants. Because of these figures, the operators try to retain their customers through new services, especially data communications, especially mobile through third generation technologies (eg. UMTS).