Like, people really do be showing how little they know about consumer electronics when they say “yah this phone was 100% built in America”, or that they’re a grifter lying to their audience.
I don’t think there even is a facility In the US that could even potentially make the panel for the display. And there is exactly one fab that could make a modern processor for a smartphone SOC, (excluding intel’s facilities, but they do X86 chips so not really relevant for a smartphone.)