If i recall correctally, Australia tried to fine adults if they didnt have thier phone with them. Ive heard a relaible youtuber say it, but i couldnt find a news article to confirm it.

Went to look for the article. Found something even worse https://www.abc.net.au/news/2022-01-24/can-border-force-search-your-phone-when-you-travel-to-australia/100774644