Travelers today have three main options for staying connected abroad: carrier roaming, a local physical SIM card, or an eSIM. Each has trade-offs depending on your trip length, destination, and how much convenience matters to you.
Carrier roaming
Pros: Zero setup — it just works the moment you land. Keeps your existing number active with no changes.
Cons: Usually the most expensive option per gigabyte, and easy to accidentally exceed your data cap.
Local physical SIM
Pros: Can be very affordable once purchased locally, with access to local carrier promotions.
Cons: Requires finding a store, sometimes an ID or passport, and replacing your home SIM card — which means missing calls and texts on your regular number while abroad.
eSIM
Pros: Install before you leave home, activate on arrival, keep your home number active via dual SIM, and pay a transparent, fixed price. Ideal for single-country trips, multi-country itineraries, and short business trips alike.
Cons: Requires a compatible, unlocked device (see our compatibility guide), and typically covers data only — you may need a separate plan or your home number for calls and SMS.
The verdict
For most modern travelers with a compatible phone, an eSIM offers the best balance of cost, convenience, and flexibility. Roaming still makes sense for very short trips where you value zero setup, and physical SIMs remain useful in regions with limited eSIM plan availability.