I think the best invention is the current cell phone, because it allows us to locate a person anywhere, there are also many new models of phones that let you perform various activities, and function as portable computers, such as video and photo cameras such as music players and even video calls can be made through these machines.

I think that the modern world could no longer perform their normal activities without this team.
I think the cellphone could replace all the equipments at home, because they have a little size and to permit to make many activities.
Thanks to a cellphone can save someone life to make a call for help in remote locations that do not have a telephone service.
I like having a cellphone whit a laptop battery, without the need for electricity, for reducing the use of natural resources and help conserve the environment.
The technology every day an every day advance, and the most important is to used it.