Guides
A phone number abroad: what it fixes, and what it does not
A travel number does not replace your own, and it will not catch your bank's code. What it solves is the call you cannot make from a messaging app.
Most people read "eSIM with a phone number" and picture losing their own number for a week. That is not what happens, and the misunderstanding is expensive in both directions: some buy a number they do not need, and others go without one and spend the trip unable to ring a single local business.
Here is what a travel number actually is, the one thing it deliberately does not do, and how to tell which group you are in.
Your own number stays switched on
A travel eSIM sits alongside the physical SIM already in your phone. Your usual number keeps receiving calls and texts exactly as it did at home. The eSIM carries the data and the new number. Two lines, one phone, both live at once.
Nothing is transferred, nothing is replaced, and nothing needs to be given back at the end of the trip. When the plan expires the second line simply stops and your own number carries on as if none of it had happened.
The one thing it does not do
A travel number will not receive the code your bank sends you.
Your bank sends that code to the number it has on file, and that is your own. It has never heard of the new one. The same is true of your tax portal, your employer's login, the airline that wants to confirm it is really you, and every account you set up years ago and have not thought about since.
This is not a flaw to work around. It is the reason the first section matters: your own line is still on, and receiving a text while roaming is normally free. The arrangement that works is boring and reliable.
- Leave your own line switched on for calls and texts.
- Turn data roaming off on that line, so it cannot quietly spend money.
- Let the eSIM carry the data, and make it the default line for data.
A travel number is for the calls you make. Your own number is for the codes you receive. Keep both and you are covered.
What it actually solves
Every item below has the same shape: a business has a telephone, you need it now, and there is no app in the middle.
- The restaurant that will not answer anything else. A table at eight, moved to nine, on a Saturday. Nobody is reading messages during service.
- The driver waiting somewhere you are not. Airport pickups fail in the last hundred metres, and they fail by telephone.
- The apartment. The lockbox code does not work, it is raining, and the host is a phone number on a booking confirmation.
- A doctor, a pharmacy, a clinic. Nobody wants to discover in the middle of this one that they cannot make a call.
- Anyone who needs to ring you back. Deliveries, repairs, a reception desk, a lost bag at the airport. Give them a local number and they will use it.
Why messaging apps do not cover it
They cover the half of your life that already has your number. Friends, family, colleagues — all of that works over data and always has.
What they do not cover is a stranger with a business. A taxi dispatcher will not add you on WhatsApp. A hospital switchboard has a telephone. A restaurant in a town of four thousand people has a landline and a person who answers it. The gap is not technical, it is social: businesses answer phones, and the further you get from a capital city the truer it becomes.
It runs the other way too. A local number is one somebody will actually dial. A foreign one, with an unfamiliar country code and an international rate attached, often simply does not get called back.
Where it works, and what it costs
Every plan carries a real number of your own, unlimited calls and unlimited texts. What separates them is where they work. These are the current prices, taken from the catalogue as this page loads.
| Plan | 20 GB | 50 GB | 100 GB |
|---|---|---|---|
| All of Europe, 37 countries | €21.44 | €42.58 | €57.85 |
| One country | €19.90 | €40.69 | €51.38 |
Every plan runs 30 days, with unlimited calls and texts.
The comparison is not close, and it is worth saying plainly rather than leaving it in a table. The plan that covers the whole of Europe costs a little over a euro more than a plan for one country. For that difference you stop having to know, at the moment of buying, which borders you will cross.
So buy the European one unless you have a specific reason not to. A single country makes sense when you are going to exactly one place, staying put, and would rather have the cheaper line — and that is a real situation, just a narrower one than most people think theirs is.
One practical note: the number is assigned after purchase, usually within a few hours. The data works immediately. Buy it the evening before you fly rather than in the taxi to the airport.
Three things to check before you buy
- Your phone takes an eSIM and is not carrier-locked. An eSIM will not install at all on a locked handset, and the error it gives does not say why. Your operator can tell you in a minute.
- Which line is the default for calls. Set your own number as the default for outgoing calls, and choose the travel line only when you are ringing a local business. Otherwise you will call your mother on the number she does not recognise.
- Which line is the default for data. The travel one, always. This is the setting that decides whether the plan saves you money or sits there while your home SIM roams.
When not to buy one
If the trip is a city break, the hotel is booked, the transfer is arranged, and everyone you intend to speak to is already in your phone, a data plan is enough. Calls over the internet do the rest and cost megabytes instead of minutes.
Buy the number when the trip has moving parts: a rented car, a house rather than a hotel, several towns, a booking that might need changing, or anything where somebody local may need to reach you. That is the trip where not being able to make a telephone call turns into an afternoon.
