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Data that stops right at a land border, or partway through a cross-border train, means you've crossed into a country your plan doesn't list. Add that country's plan from the app on any Wi-Fi; it goes onto the same eSIM, with nothing to scan and nothing to set up.
Open My plans and compare the plan's Where this eSIM works list with the country you're in now. A country plan covers one country; a regional plan covers its list; the Global plan covers 133 countries and isn't every regional plan combined.
There's no network your eSIM is allowed to use there. Add a plan for the country you're in from the app: Wi-Fi at a café, hotel, or border post is enough to complete it, and your phone connects a minute later. Your plan starts when you connect in a supported country, not when you buy. Your validity days count from that first connection. Unused data expires at the end of your validity period. It doesn't roll over.
On a train, the phone hands off from one country's network to the next across the journey, not at one moment, and tunnels and deep countryside are patchy in every country. If both countries are in your plan, give it a minute after the border. Give your phone a minute to connect once you land. Still nothing? Switch on Airplane Mode for 30 seconds, then switch it off again.
If you'd chosen a network by hand before the border, the phone keeps looking for it. Set network selection back to automatic; see Switch networks manually when the automatic pick is weak.
Some countries need an APN that the one you left didn't. Japan and South Korea, for example, need the kroly APN, so a train from one to the other is fine but the setting has to be there. The table is in your platform guide, under Setting your APN.
Still not working? Message us on WhatsApp at +1-888-357-7347 and include four things: your ICCID, your order number, your phone model and OS version, and what you've already tried.
KnowRoaming partners with top-tier local networks to provide strong connectivity in urban areas and travel hubs. While rural performance can vary depending on the country, travelers typically enjoy excellent service in major cities and popular destinations.
Be advised that after activation, both eSIMs and regular SIM cards are capable of functioning even when not connected to the internet. This implies that both types of SIM cards can be used with your device for making calls, sending texts, and other activities that do not require an internet connection.
Yes. KnowRoaming covers 200+ destinations, and a single Global eSIM connects in 144 of them, so you can cross borders without switching or changing SIMs. Regional plans for Europe, Asia, Africa, the Caribbean, LATAM, and more work the same way.
Yes, KnowRoaming offers eSIM plans that work across multiple countries, so you can stay connected without buying a new SIM card in each destination. Whether your family is visiting three countries in Europe or hopping between islands, one KnowRoaming eSIM can keep you online for maps, translations, and entertainment in over 200 destinations.

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