If that client did not already call your cell phone ,but he happens to call the office he can be forwarded to the cell phone just like that. Now also working class people can afford this technology. Now moms can can call home to tell everyone they are just gonna be a few minutes late. Guys can call and tell their friends thye are late for the game. This is all possible with the cell phone.
Cell phones can also have kind of a bad side too.
People now have all this technlogy that they hardly ever do business face to face anymore. People call leave a message get back to each other with either a fax or another call. The days of dealing face to face are almost over. Also people are using the People all over the world can talk to anyone at any time of day. This is all set up with the satellites that are orbiting earth.