I haven't seen anything like it in the US. But I spent some time in China, and at the local grocery store close to my apartment, there were a couple of teen-age

I haven't seen anything like it in the US. But I spent some time in China, and at the local grocery store close to my apartment, there were a couple of teen-aged looking kids with a hot-air soldering station and some smt stencils who were re-working cell phones (probably failed QC) in their spare time when they weren't selling sunglasses or wristwatches and that kind of stuff.