Even in the US it's weird. I arrived on a passport + visa. No requirement to carry it. Got a driver license. No requirement to carry that either, unless I'm driving. But now that I have a Green Card I need to carry it at all times. At least until I get citizenship.

I live in a state that allows for having my driver license on my phone.

This is very strange for an Indian, too.

We do not carry ID unless we are driving (driving license), using long-distance transport, or going to vote.

Always carrying ID is such a strange idea!

I feel weird without it and I always carry my ID in the US, even when just going for a walk around the neighborhood.

Not hard for me since it’s in my wallet and I use one of those slim wallets and don’t carry many other cards and don’t stash receipts in the bill area like some people do.

And technically you don't have to have your ID on your person when driving. In some states you might be issued a fine if you make the officer mad but it's not a crime and you won't be arrested.

... or entering a bar, or buying alcohol, or purchasing allergy medicine