Can someone please answer definitively if I need a VPN/eSim in mainland China and Hong Kong or not? I have a locked iPhone 16 Pro from AT&T and was planning to use AT&T's International Day Plan at $12/day capped at $120/blling cycle. I know there are probably cheaper options out there but using the AT&T international day plan is easiest for me, especially since my phone is still locked and I'd have to pay off my phone ($500+) in order to unlock it.