Why i cant install facetime in my iphone 6?

Do you happen to live in a country that restricts the use of the FaceTime app? If so, that would be the reason you cannot install it on your iPhone.

Ref: Wireless carrier support and features for iPhone in the United States and Canada - Apple Support (Note: You can choose a different region from this website.)

Perhaps this article will help:

Get help with FaceTime on your iPhone in Saudi Arabia - Apple Support

What is the model number of your iPhone? Settings>General>About>Model.

You may have to scroll to see the entry for Model.

Where are you located?

AE

That iPhone won’t have FaceTime in Pakistan or anywhere else outside the Middle East. In addition, iOS devices originating from Pakistan won’t have it either.

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