Mobile phones, smartphones and tablets have revolutionised the way we communicate but the technology we are addicted to has had toxic consequences. China produces approximately 90% of the world’s consumer electronics. The factories making the components for these electronic goods are filled with young workers. Some have been exposed to poisonous chemicals, with devastating results. This investigation, filmed secretly over four years, exposed the use of harmful chemicals in the factories producing the products many of us use. Hidden cameras captured the working conditions inside the factories churning out these products.