Buying a iPhone 5s from Dubai and using it in Pakistan?

Is it possible that the phone will function with a Pakistani service provider? My dad's buying me an iPhone because i'm finally in high school, but I don't want to buy it from within Pakistan, we don't buy much stuff from here because it's mostly fake, used or worse. I bought a Macbook Pro (Mid 2012) i7 13'in from iRaffles (authorised reseller) in Pakistan, and it's great but those people are selling the iPhone 5s for around Rs.112, 000 which is like $1, 055.13. I would want to go easy on my dad since he just bought me the laptop, but isn't it too much? (don't be surprised, we get these kind of devices double the original price in Pakistan).

If you wanna buy iphon5, maybe i can help you
it can work any country, you could check it my site: www.yihai315.us

Best option would be to just buy an unlocked iPhone 5S. Then it can be used on any carrier in the world. Only way it would work is if the carrier that you use in Pakistan is the same carrier as you buy it from in Dubai. If not though the best option would be international unlocked iPhone 5S.