Smartphones possess multiple features that would not exist without critical raw materials. For example, indium enables your screens to be tactile. The performance of the microphone and loudspeaker relies on magnets (a mixture of iron, boron andneodymium). Tantalum and silicon are the perfect allies for electronic chips. Be it metal (magnesium alloy) or plastic, the casing of your device contains a rechargeable battery made of eight grams of cobalt.