 Ok, that's all I have to say about the points that are inevitable that support the statement. I've shown you two main points. First, the radiation of mobile phones may cause damage to our body, which includes brain tissue and sperm cells. Then the smartphone apps may spread unreliable health information that may mislead users. Now I should hand over to Step, who will discuss the points that go against the statement. Step over to you. Ok, thank you Robert. So I'm Step. I'm going to introduce evidence showing that smartphones are not harmful to our health. There are three main points here.