The onesim blog
Good trips start here.
Places to explore, practical travel advice, and ideas for your next journey.
All articles
20 articles
Destination guides
Getting from Narita, Haneda and Kansai into the city
Which train or bus to take from Japan’s three main international airports, what it costs, and the one thing to set up before you land.
Travel inspiration
Rome to Venice in six days, by train
Italy’s classic first trip on high-speed rail: three cities, two train rides, and the bookings that actually need doing in advance.
Already know where you're going?
Prepaid data across 195+ destinations, installed before you fly.