I'd disagree, you taking your phone through customs is indeed legal, and the border goon's seizure of your phone (by force if they prefer) and demand for your p

I'd disagree, you taking your phone through customs is indeed legal, and the border goon's seizure of your phone (by force if they prefer) and demand for your password on penalty of imprisonment is also legal. So this is not a legal issue, everyone is acting within the law. One could argue that it is a political issue, that the law should be changed (and I'd agree), but that's a different question.