facetime – Face time in a middle east version of iPhone in India

I am planning to buy an iPhone 12 pro for my brother who is in Dubai now. But after a few months, he will go back to India.

Middle East version of the iPhone doesn’t have face time installed by default because it is not supported in UAE. But, If he takes his iPhone to India, can he install and use the face time in India? We buy only the unlocked version.

I checked with the iPhone customer care. They say, ”it is completely based on the carrier you are using”. If I ask my service provider they are asking me to check with iPhone support.

Any suggestions?