i have iphone 4s but i don't have facetime app how i can set up in my Mobile

i have iphone 4s but i don't have facetime app how i can set up in my Mobile

Setup is in the "Settings" menu. The FaceTime app is built into the telephone application and can be accessed via the contacts list if available for use between you and your recipient.

Facetime is by demand of the UAE goverment blocked in all iPhones, iPod touches and iPads sold in the UAE, and there is no way to enable it.

Regards.