briaian quinn looks at the devie that changed our daily life. brianonce upon a a time, she would have found her way through the foforest with a map p and cocompass, recording data in a waterproof notebook. uses her field engngineer smart phone to navigate, alert to do the basics of her job. >> i use it to collect all of my data in the field. brian: the smartphone has become an indefensible -- indispensable part of the modern world. in some of the world's diarist situations, the smartphone is there. where his phone to document regime bombings are happening and let his family know he is safe. in beijing, 21-year-old live stream or broadcasts her songs to over 600,000 followers. >> smartphones brought me closer to my fans. even when i am not streaming. we may be far apart, but we can play games together on our phones. -- theiolence and smartphonene h has become a navigational and communication toolol for migrants as they make their way across unknown lands in search of a better life. >> we don't walk on roads, we go through the forest. if you don't have