Phone and apps
Direct answer
Treat eSIM, VPN, roaming, Wi-Fi, and home-SIM SMS as separate dependencies. A travel eSIM can solve mobile data, but travelers should still prepare blocked-app access, bank SMS, hotel contact, and offline transfer details before landing.
Editorial check
This answer stays short so a traveler can act quickly, then points back to the fuller guide and the official checks that may change before departure.
Current eSIM provider routing, device compatibility, carrier lock status, roaming cost, VPN availability, home-number SMS behavior, and app access requirements.
Action path
A practical answer should leave the traveler with a few moves they can actually make before the trip or at the point of friction.
Make mobile data work before the first airport-to-hotel transfer.
Save hotel, route, and support details offline.
Treat map, message, and translation apps as dependencies, not decorations.
Answer hub
Cluster pages help travelers move through related questions without losing the thread.
Related guides
Use these pages when the traveler needs the longer context, product path, or supporting decision.
Related answers
These answers share the same practical intent and help search users move sideways without restarting.
Next move
Read enough to make the decision smaller, then open the checklist, search a specific question, choose a setup tool, or share the page with the person planning with you.
Use the checklist when the question has shifted from research to preparation.
Search by the actual problem: Alipay, eSIM, transit visa, first transfer, vegetarian food, or a city name.
Open recommendations when the task is clear enough for a short list to be useful.