Can a Note 2 from Taiwan (visitor) be used in U.S.?

[AC Question]

My friend is visiting U.S. in a couple of weeks and wants to know if she can use her Taiwanese Note 2. The local carrier is T-M Telecom. Thanks in advance.

 

[Laura Knotek]

Is your friend's Note 2 unlocked?

 

[Rob351]

I'm not sure. Should she call her carrier? She has very little knowledge about her phone.