[The Scientist (OP)]

Okay I think that some people may get confused with this question. What I am trying to ask is do Phones(in general, smartphones, iPhones, handphones, house phonese etc.) and Computers (destop computers, Laptops) do they bring human more benefits as in communication, information transfer. Or do they bring more negative downsides? Such as addiction, poorer eyeside, health problems?

Please elaborate upon explanation. Thank you.