🇺🇸미국 모바일 커버리지

Your phone won't auto-pick a US carrier when you land — most foreign plans either don't include the US or roam at punitive day rates. A RoamGo eSIM swaps in a local-network data plan before you clear customs, so Apple Maps and Uber work on the curb outside JFK or LAX.

네트워크: Roams onto AT&T, T-Mobile, and Verizon (depending on the local cell tower) — the three major US carriers cover roughly 99% of populated areas with 4G LTE or 5G.