I know that - it's not the same. Border agents will not say "Hey, we think you have 2 phones, and you brought only one. We'll deny entry and next time bring bot

I know that - it's not the same. Border agents will not say "Hey, we think you have 2 phones, and you brought only one. We'll deny entry and next time bring both." They also don't say "Hey, this phone you gave me doesn't have any photos. You must have backed them up elsewhere and are hiding them from me. I'm denying entry." In other words, they don't say "Hey, bring all the photos you ever took."