Is the iphone version of quicktime the same full featured version available on a desktop machine? As per Adobe's site: However, in the latest versions of quicktime one must actually "turn on this feature." Go to Quicktime preferences > Advanced > enable flash - then restart quicktime. Flash 5 could do a lot of really cool things. Maybe flash playback is indirectly supported. I would dare to say 80%+ of the flash content on the presently on the web uses features found in ver. 5.