How to use an European Samsung S8 in American networks?

[enricochinello1]

Hello, I have an European Samsung S8, used with Italian and Swiss SIMs. I will move to the US soon, and the cell phone apparently has a countrly lock. How can I remove that to utilize it with an American SIM card?

Thanks! 

[BandOfBrothers]

To remove a Region Lock its advised to make at least 10 minutes of calls while in the country of origin using a local sim card to a local number @enricochinello1 

Also the Samsung Customer services support department for the country of origin maybe able to remove the region lock remotely.

I-inserted-a-new-sim-card-and-now-it-is-asking-me-for-a-pin-or-unlock-code-to-unlock-it.