On iOS at least, an app would have no way to determine that unless it was a callkit app that explained how to enable access to your sms history as well (they ca

On iOS at least, an app would have no way to determine that unless it was a callkit app that explained how to enable access to your sms history as well (they can’t request it - you have to go to settings and turn it on from what I’ve seen). That would be super suspicious and get extra scrutiny during app review.