What is the margin on the Apple iPhone 5S and 5C?
This is a question I often asked, well about all iPhone models since my iPhone 3. Below is a link to a post by Wendy Tietz which includes good estimates. It is set out like a student exercise too, so give it a go if you have the time. Seems Apple make quite a margin, and it seem the mobile operators subsidise quite a bit too.
Martin's accounting blog 