The FRITZBox 6850 5G can be used in the USA as it supports a variety of 5G frequencies that are used internationally. However, you should make sure that the mobile service provider you are using provides the supported frequencies. Supported 5G bands include n1, n3, n5, n7, n8, n20, n28, n38, n40, n41 and n78.
If you have any further questions or require assistance from our technical support team, please contact us by email at fritzhilft(at)avm(dot)de. Please state the ticket ID #6700323 in your enquiry so that we can allocate your support ticket more quickly.