11 Best International Roaming Plans Compared for 2025

4. Google Fi (Flexible and Unlimited options)

Google Fi’s approach is known for easy cross-border use because it shifts between partner networks and Wi‑Fi to keep you connected with minimal manual changes. The Flexible plan charges per GB used, while Unlimited-style plans bundle more data for a flat fee. Activation is smooth on supported devices—often just sign in to the Fi app and enable service—making Google Fi a popular choice for travelers who want straightforward, pay-for-what-you-use billing. Coverage tends to be solid in Europe, parts of Asia, and many other popular destinations, though performance can vary in remote areas. Fi is particularly good for travellers who need predictable charges and who use both calls and data regularly. For Indian travellers passing through the US, Fi’s automatic network switching means fewer configuration headaches. Pros: simple activation, transparent billing, good device compatibility. Cons: full benefits often require a Fi‑compatible phone; per‑GB costs can add up without an unlimited plan. Best for: travelers who want a fuss‑free roaming experience and clear billing.