CastilloCheck regulatory label in the settings and see if it show USA regulatory or not.
It was the US model. It was shipped with a US charger.
It wasn't a complaint. It's a question asking for any fixes someone might know of. I purchased the phone from a US company and it was certified to work a GSM provider which is T-Mobile in my case. No need to be rude in your response. Move on if you have nothing constructive to add. My Asus Zenfone 8 worked with T-Mobile with no issues and it was purchased from the same company.