mail your phone to the USA (powered off, encrypted).
Then arrive without a phone (or with an empty burner just containing the map to your hotel).
Then arrive without a phone (or with an empty burner just containing the map to your hotel).
Just flatly admit I intended to comply with the request, just didn't want to be afraid if I deleted all the saucy photos of myself with my wife.
But in all seriousness I have a phone like this already and use it as a navigation device only: just gmaps, Waze, citymapper and separate Google account (in my name).
Just devoid from anything personal while visibly being in use for a lot of time.