Have you ever wondered how much-discarded phones emit harmful chemicals into the environment? When used phones make their way to the bin, materials from these devices start to rot away. That releases harmful chemicals into the environment, in which we breathe, drink, and survive. There are many companies that buy old phones online, refurbish them, and re-sell them again to the customer for a better price. Therefore, selling phone online can also act as a catalyst for creating a sustainable environment.