I was also thinking about Apple Pay in my original comment. But that's iOS-only, and I'm going to hazard a guess that Google Pay doesn't work in China, so we're back to GP's point.
We've never been big on mobile payments in the U.S. (because credit cards), but I'm finding myself using Apple Pay more and more. I read somewhere than ~50% of payments in the U.S. are now contactless.
I'm kind of thinking of markets outside China though.