Some other information in the CIRP report shows that 58% of iPhone buyers upgraded from non-Apple phones.

FORBES: Move up http://i.forbesimg.com t Move down

According to CIRP, both the proportion of the latest iPhone relative to older models and the proportion of the 64 GB model relative to cheaper iPhones have shrunk dramatically in a year.

FORBES: Apple's Regional Trends Will Face Close Scrutiny Tonight