 Good morning and welcome everyone. Thank you all for coming to our presentation today. My name is Sandy. And I'm Steph. We're both in the electrical engineering program. We're here to talk about smartphones and their impact on human health, both positive and negative. I'll give you some background on the issue first. Then I'll profile you with some examples of negative impacts of smartphone use. I will then discuss the positive side of using smartphones and give you a summary of our presentation at the end. But first, who wants to guess when the first smartphone was invented? In the year 2000. Well, actually, the first smartphone was invented in 1992 by IBM. Good morning everyone. Thank you all for coming. We are happy to be able to present to you today. My name is Thomas. And I would like to introduce my partner, Robert. Hello. We are both studying engineering. Okay. How many of you have owned a smartphone? Please put up your hand. Whoa. Okay. Well, since all of you own one, this is the first smartphone invented by IBM in 1992. So now do you think they are safe to use? What do you think? Yes, I think so. And they? Well, this is what our presentation is about today. It's frequent use of smartphone harmful to human health. We divide the presentation into four parts. First, I will talk about how we use smartphones in our daily life and the argument that support the statement. Then Robert will present the arguments against it and he will also give a brief conclusion. Our presentation will last for about 10 minutes and we welcome any questions that you may have at the end.