Rare earth elements used in smartphones are often processed in places like Baotou, in Inner Mongolia. These elements are essential for components such as screens, magnets, and internal circuitry, making them a key part of modern digital devices.

The issue is not that these materials are rare, but how they are extracted and processed. Separating rare earth elements from surrounding materials requires intensive chemical processes that produce large amounts of toxic waste, including heavy metals and acidic byproducts. This waste is typically stored in large containment areas, where it can leak into surrounding soil and water systems. 

As a result, rare earth production is associated with long-term environmental damage that extends beyond the immediate mining site. These impacts are not evenly distributed, they tend to occur in regions where regulation is weaker or where communities have less power to resist industrial activity. 

At the same time, demand for these materials continues to grow with the expansion of smartphones and other technologies. Despite this, recycling rates remain extremely low, meaning that new extraction continues even when usable materials already exist in discarded devices. 

The phone does not show any of this. It presents itself as clean and self-contained, even though it depends on processes that leave visible marks elsewhere.