What does unlocked iPhone mean?

What does unlocked iPhone mean?

It means that you can download any apps no matter if it made for your phone or not ad that you cab use any carriers phone service.

It's a hack that makes it so you can do things with your phone you are not supposed to, particularly take it to another service provider.

It means you can use it with other gsm carriers.

Means: you're free to use any compatible SIM card with the iPhone.

Factory unlock your iPhone here: http://senseiphone.com/factory-unlock-service/