if i have att could i use my phone internationally?

i want to know if ill still be able to make us calls from my att service even though i will be in pakistan?

Yes, as you travel you will be getting free att text messages that tell you the new rate/ charge. It will be very expensive though.

Yes, you can use it internationally but you will be facing roaming charges.Best way to get out of this is unlock the phone and swap to the local carrier of the country that you visit.To get free unlock service visit Unlocking4free.com or a paid unlock service from Simpleunlocking.com