I am going to visit the USA for few days. I am planning to buy an iphone X during my trip. During the buying process on the apple store, I am asked to select a carrier between AT&T, T-Mobile, Sprint and Verzion. Is this important to axctivate the iPhone? I dot not have any sim on the USA and I am not planning to have one or to use the iPhone X there.

**Edit:**

I think it´s not possible to buy it without having a current carrier in the UAS. I selected one carrier and it's asking me to put my number and a pin to be able to buy it. I tried to chat with them and ask but chat dose not work outside usa, Can someone ask them please?