For broadcasters trying to reach a global audience with mobile video, optimizing for the Apple iPhone and much of the BlackBerry line is crucial. This information comes from a second quarter 2012 report put out by mobile video company Vuclip, which ranked the top ten devices for global mobile video use.
I guess it makes sense. The 8520 has been a highly popular device in the developing nations and among lower revenue customers (i.e. the ones the lower end OS7 Curves are now aimed at.)