What is Voice and SMS?
| What you want to do | Works on a data-only plan? | What it needs |
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| The setting | What it controls | What to set it to on a trip |
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Pros
Cons
Häufige Fragen
Can I make ordinary calls on a travel eSIM?+
Usually not, because a typical travel plan sells data only and carries no telephone number. Calls through apps such as LINE or WhatsApp work normally, since those run on data. If you genuinely need a number, check the plan details before buying — only some plans include one, and the conditions differ by provider and by country.
How will I receive one-time codes from my bank?+
The most direct approach is to keep your home line in the phone with its mobile data and data roaming switched off, so texts arrive while nothing runs in the background. The alternative is to move that service to an authenticator app, which should be done before you leave, because the switch itself usually requires one more confirmation text.
If I disable data on my home line, can it still take calls?+
Yes. Receiving a call does not use data, so as long as the home line is switched on and can attach to a local network, incoming calls still arrive. What it costs to receive them abroad follows your home operator's rates, so ask them beforehand and decide whether to leave the line on all the time or only when you need it.
Is app calling worse quality than a normal call?+
It depends far more on the signal and the speed available at that moment than on the app. With a good connection the quality is usually comfortable; on a weak signal, or after a plan's speed has been reduced, audio can break up. Choosing a voice call over video and moving to a spot with better signal before an important call both help.
How do I ring a hotel on a local number?+
If your travel profile has no number, either call from the home line knowing your operator's rates, or reach the property online — through the chat in the booking app, by email, or via the hotel's own contact page. Those are usually just as quick and cost nothing to use.
How do I reach your team if the settings still are not working?+
Message us on LINE at https://lin.ee/skDPoNx, the account @esimonline, write to esimonline.asia@gmail.com, or call 089-942-0818 or 088-521-6848. We take messages around the clock, every day. When you write, attach screenshots of the list of lines and of the roaming settings, along with your order number, and we can look into it far more quickly.