Mobile phone affects frequency bands. Different providers use different frequency bands. Hence my question about it.

The answer is that the type of mobile phone has nothing to do with the network used in the US, but depends on the SIM card provider you use, Sunrise, Swisscom, etc.
The phone is capable of all networks including 5G and the camera is brilliant. The migration of all software and even wireless networks from my Samsung Note 8 was perfect, the only thing I had to reconfirm everywhere was fingerprint and face authentication.