Mobile coverage in United States
4 carriers support Best Global eSIM plans in United States. Tap any operator below to see their official coverage map.
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.
Networks: 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.
Carriers in United States
Each link opens the operator's own coverage map in a new tab — the most authoritative source for what's actually live in your destination.
Coverage maps are maintained by each operator and reflect their current network footprint. Your Best Global eSIM roams onto these networks automatically — no manual selection required.
Ready to travel to United States?
131 active plans, starting from a few dollars.