Good question, keeping is probably more environmentally friendly. I'm not sure about the second hand market. As by buying one there, you'd give the previous own

Good question, keeping is probably more environmentally friendly. I'm not sure about the second hand market. As by buying one there, you'd give the previous owner some capital and him selling in the first place, could indicate that this capital will be used for a new phone. So what's the chance that the former owner will buy a fairphone? If it's lower than yours, you'd better buy a fairphone yourself. (in terms of environmental impact)