US networks might use different antennas/communication hardware.

Will this work in the USA?

I guess I should have asked a better question. What I really want to know is how are stablecoins better than just plain ol' bitcoin? And what happens when the asset(Bitcoin?) behind the stablecoin moves up or down? How do they keep the value at $1 USD?

So their utility is that they are a form of USD that can easily interact with cryto markets.