I've been hearing about the US searching phones for many years, but not a single time for any other (non-dictatorship) country. The advice for travelling to the US in my circles is "wipe your device, install some believable bullshit, restore from backup when you're through". Not for any other "normal" country.
> The advice for travelling to the US in my circles is
There's a much simpler advice:
"Don't."
37signals has been having border crossing guidance at least since 2020. https://github.com/kspr9/basecamp-37signals-handbook/blob/ma...
The USA is definitely not thevonly one. Great Britain has also an extensive history of tyranical privacy-violating border crossing.
As is Israel and Russia.
The point is, the deeper you look, the better you understand how wide-spread the practice is.