Q: why you dont add persian language to devices?

persian language is an old language in the world.the persian is official language of 3 countries and its 13th language of the websites.persian is language of poem and peace. i want to know why you dont add it on your devices? therefore your device is very popular in Iran and other Farsi language countries , but we dont have any keyboard , Hejri's calender , etc ... .

Thank you