PetaPixel lists the top of everything on Flickr

Top Smartphones: iPhone 5 (10.6%) Runner ups: iPhone 4S (7.0%), iPhone 4 (4.3%), iPhone 5c (2.0%), Samsung Galaxy S3 (1.2%)

What's most amazing about this stat is not that Apple holds the top 4 positions on this list, but that the top Android phone is the Samsung Galaxy S3. Samsung must have bundled some particularly deep Flickr integration into that version of TouchWiz.