IndiaQues. If an iPhone 5s bought from Dubai is used in India will face time and whatsapp work?
Ans. For any app that is dependent on the internet to work needs an internet connection to work that's it.
Same is the case with iPhone or any other smart phone.
You can seamlessly enjoy Facetime on iphone on 3G and Wifi any where in the world.
So go ahead and enjoy video call with your loved ones.