The Register (UK) cites reports that Americans of Iranian descent have been denied permission to buy an iPad and an iPhone after being heard speaking Farsi (Iranian) in Apple stores. The article includes a link to an Atlanta TV station video report.
http://www.theregister.co.uk/2012/06...tore_iran_ban/An Apple Store in the US state of Georgia refused to sell an iPad to an American teenager because she spoke the Iranian language Farsi in the store. A student in the nearby city of Atlanta was also banned from buying an iPhone for the same reason...
Also see the Huffington Post on this.
There are, however, apps for a Persian keyboard and dictionary.
A final irony: a clerk who refused to sell was ALSO Iranian.