In my country people have a contract and get a prepay SIM, too, all the time. They don't even ask the carrier to unlock it. They just go to 3rd party service vendors who can unlock it.
Here it's because you get like 10x or unlimited minutes in the same network compared to 100-200 you get with other networks, so that's why people want to be able to use at least 2 SIMs with their phones. Not sure how it is in US regarding the minutes you have with other networks, but I assume it's similar since carriers want to lock you in through that, too.
Here it's because you get like 10x or unlimited minutes in the same network compared to 100-200 you get with other networks, so that's why people want to be able to use at least 2 SIMs with their phones. Not sure how it is in US regarding the minutes you have with other networks, but I assume it's similar since carriers want to lock you in through that, too.