The "Underworld" of Used Mobile Phones: From Recycling Corners to Value ReconstructionSmartphones have become indispensable in modern life, but their rapid upgrade cycles are also astonishing. Where do old phones go after they are discarded? In rural areas, it is common to see people with megaphones shouting "Recycling used mobile phones, exchange for scissors, exchange for kitchen knives!", what stories lie behind the recycling of these used mobile phones? Where will they go?I...