What happens to a country eSIM when you cross a border
A single-country eSIM only works on that country’s networks, so once you are in the next country it stops giving you data: no charge, just no connection. Near the border it can drop out even before you cross, because your phone goes for the strongest signal. A regional plan avoids the gap by moving to a partner network in each country it covers.
See the Europe packsWhy a country plan stops at the line
A country plan is allowed onto the networks of one country and nowhere else. Drive from Portugal into Spain on a Portugal-only plan and the phone can still see Spanish networks, but the eSIM is not allowed to use them, so that line shows no service or no data. Nothing extra is charged on the eSIM; it simply stops working until you are back in its country.
The real risk is your usual SIM. If its data roaming is on and the phone is allowed to fall back to it, data quietly moves to your home line, and you pay whatever that roaming costs. For an EU plan inside the EU that means home prices; in Switzerland, the United Kingdom or anywhere your tariff does not cover, it can be expensive.
One eSIM for 33 European countries
Several countries on one trip? Same eSIM, same data, no swapping lines at the border.
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For one to two weeks of maps, messaging and the odd video.
Buy up to 180 days before you fly: the plan only starts when the eSIM connects at your destination.
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Will it work on my phone?
On iPhone: Settings → General → About, and scroll to EID. If there is an EID, your phone takes eSIMs. Every iPhone from the XS (2018) onwards does.
On Android: Settings → About phone → Status, and look for EID. If there is an EID, your phone takes eSIMs. Most Galaxy S20, Pixel 3 and later do.
It also has to be carrier-unlocked. If you bought it outright or your contract is over, it almost certainly is.
Not sure about your model? Ask us before you pay and we will tell you — a person answers within 24 hours.
How it works
- 1Choose and payCard, Apple Pay or Google Pay. No account.
- 2Install it at homeThe QR arrives by email. Scan it on wifi in a minute.
- 3Connect when you landTurn on data roaming for the eSIM and you are online.
The setting that decides which line carries data
On iPhone, Mobile Data inside Mobile Service picks the line that uses data, and the option below it, Allow Mobile Data Switching, lets the phone use the other line too, depending on coverage and availability. That is handy at home, but on a trip it means a dead travel eSIM can hand your data to your home line without asking. Turn it off if you want data to go only through the eSIM.
On Android, you pick the SIM for mobile data in the SIM settings; on a Pixel they are under Settings › Network & internet › SIMs. Whatever the phone, keep data roaming switched off on your usual line for the whole trip, and check both settings once before you leave, while you can still read the menus calmly.
Why the signal drops before the border
Phones choose networks by signal, not by flag. In a valley that runs across a border, by a lake shared by two countries or on a coastal road, the strongest signal often comes from the other side. A country eSIM cannot use that foreign network, and while the phone keeps trying, you can lose data before you reach the border or keep losing it after you are back.
The fix is the one regulators recommend against unwanted roaming: choose the network by hand. On iPhone, open Mobile Service, tap the travel line, then Network Selection, and turn off Automatic; on a Pixel, open the SIM in Settings › Network & internet › SIMs and turn off Automatically select network. Pick a network from the country your plan covers, and switch automatic back on when you leave the area, because a fixed network leaves you without service once you are out of its reach.
Two country eSIMs on one trip
On a trip through two countries, you can install both eSIMs before you leave. Recent iPhones can store several eSIMs and keep two active at once, and many Android phones can too. When you cross, change the line used for mobile data to the new country’s eSIM and turn on data roaming for it. Each pack only starts counting when it first connects in its own country, so the second one does not lose days while you are still in the first.
Give the lines clear labels, such as Portugal and Spain, so you pick the right one in a hurry. Our guide to setting up two lines for travel walks through the menus, and the road trip guide covers routes with several borders.
Regional plans: one eSIM, several networks
A regional plan is built for borders. The same eSIM is allowed onto partner networks in every country it covers, so when you cross, the phone leaves one network and registers on the next. It is not always instant: the switch can take a minute or two, and sometimes the phone clings to the old network until you give it a nudge.
If you have no data after crossing, turn flight mode on for about 30 seconds and off again, as Apple suggests for roaming problems, and check that data roaming is still on for the eSIM. If that fails, choose a local network by hand. Snoozim’s Europe pack works in 33 countries on one eSIM, and our no-service guide lists the other things to try.
Which one fits your route
A single-country plan is the better fit when you stay in one country, or cross only for an afternoon and can live without data on the other side. If you cross several times, sleep in one country and spend the day in the next, or follow a coastline that weaves between two countries’ networks, a regional plan saves you the switching and the dead zones.
Regional coverage has edges too. A plan for Europe will not help on a day trip to a country that is not on its list, so check the list against every border on your route, especially Switzerland, the United Kingdom and the Western Balkans, which some European plans leave out.
Will a country eSIM charge me roaming in the next country?
No. It simply stops working there. Any charge would come from your usual SIM, if data switches to it with data roaming on.
Can I use a country eSIM in the neighbouring country?
No. A single-country plan only connects to networks in that country, even a few metres from the border.
Do I need to change anything when I cross with a regional plan?
Usually not. The same eSIM moves to a partner network in each covered country; if it does not, toggle flight mode or choose a network by hand.
How many eSIMs can my phone hold?
Recent iPhones store eight or more eSIMs and use two at the same time. On Android it depends on the model.
Get your eSIM before you fly: the QR arrives by email in minutes and the plan only starts when you connect at your destination.
See the Europe packs