Mercifully, they'll mostly buy new cheap phones -
/sarcasm mode on/
rather than buying our used ones; saving us, on the one hand, end- and fruitless discussions on whether it's morally justifiable to swamp developing countries with cheap used Western stuff when they could perfectly when they could perfectly well used new products made in China, or even locally; and on the other hand they'll all use their own cobalt capacitors and produce their own toxic waste, rather than leaving us as the only, or main, sinners.
/sarcasm mode off/