SIM, eSIM and public Wi-Fi
An eSIM is convenient if your phone supports it and you want to activate quickly. A physical SIM can be better if your phone does not support eSIM or you prefer counter assistance.
Check compatibility before buying because locked phones may not accept either option.
Airport SIM and Wi-Fi counters are easy to find and helpful after a long flight. Online preorders can be cheaper, but make sure the pickup counter hours match your arrival time.
Late-night arrivals should double-check availability.
A pocket Wi-Fi device can be cost-effective when several people travel together. The tradeoff is that someone must carry and charge it.
If your group splits up often, individual SIMs or eSIMs may be easier.
Cafes, hotels, stations, and public areas often have Wi-Fi, but login steps and coverage vary. Reliable mobile data makes maps, translation, and taxi apps much smoother.
For first-time visitors, having data from arrival is strongly recommended.
Maps, photos, translation, and transit apps drain batteries quickly. A compact battery pack is one of the most useful items for a full sightseeing day.
Charge it overnight and keep a short cable in the same pouch.