@Kris_S: That’s really useful info, thanks. Not surprisingly it looks like Fairphone is by far the most ethical phone manufacturer, but it looks like Nokia might be a good bet for a non-smart phone. It’s encouraging to see they have some kind of policy in place about conflict materials.
Good also to see Apple getting reasonably good scores from those websites considering I’ve been using an iphone 3 for the past few years … but I can confirm they’re product lifespan is terrible, the on/off button died after about a year so I have to run the battery down to turn it off!