Here in Uruguay the carrier is allowed to keep your phone locked after the contract expires. I have an Iphone from Movistar and they say they won't unlock it. It is a shame, because I used to travel and couldn't use my phone in countries where Movistar isn't established or doesn't have a deal with a local carrier.

Here the only way to get a subsidized Iphone is from two companies which won't unlock your phone. The third one, the public one, couldn't make a deal with Apple to offer it. So I guess my next phone is going to be an Android.