The plane touches down, you flip on the travel eSIM you set up weeks ago, and the signal bars sit there empty. Nine times out of ten it is a settings problem, not a broken eSIM, and each one takes under a minute to fix.
Travel eSIMs are brilliant right up until the moment they are not, and that moment is almost always the same: you land, you are tired, and your phone stubbornly shows “No Service” or connects with no internet. The good news is that the causes are predictable and boring. Data roaming, the wrong data line, an activation timing quirk, and a handful of other setup slips account for nearly every case. Here are the seven mistakes that break your data on arrival, and exactly how to fix each one.
The three that catch the most people:
- Data roaming is off for the eSIM — the single most common cause.
- Your phone still uses the home SIM for data — the wrong line is selected.
- You expected it to work before landing — many eSIMs activate on arrival.
Quick reference: the 7 mistakes and fixes
| Mistake | The fix |
|---|---|
| Data roaming off for the eSIM | Turn Data Roaming on for the travel eSIM line |
| Wrong line set for data | Set the eSIM as your mobile data line |
| Activated too early | Wait until you land, then give it a minute |
| APN not configured | Enter the APN from your activation email |
| No restart after landing | Toggle airplane mode or restart the phone |
| Auto network stuck | Select the local carrier manually |
| Line not enabled or installed wrong | Turn the eSIM line on, or reinstall on WiFi |
Table of Contents
1. Data roaming is switched off for the eSIM
This is the culprit in most “no data” cases, and it trips people up because the advice sounds backward. A travel eSIM connects to local partner networks abroad, which counts as roaming, so the eSIM line needs Data Roaming turned on to work. Meanwhile you keep roaming off on your home line to avoid a giant bill. Both settings have to be right at once. On an iPhone, go to Settings, then Cellular, tap the eSIM line, and switch Data Roaming on. On Android, open Settings, then Network and Internet, then SIMs, pick the eSIM, and enable roaming. Turning it on for the travel line does not cost you anything extra, since that plan is already prepaid.
The fix: Enable Data Roaming for the travel eSIM only, and leave it off for your home number.
2. Your phone is still using the home SIM for data
Dual SIM phones let you keep your home number active for calls and texts while the eSIM handles data, but only if you tell the phone which line does what. If your home SIM is still set as the data line, the phone tries to pull data from a number that is either roaming-blocked or racking up fees, and you get nothing useful. Open your cellular or mobile data settings and confirm the travel eSIM is selected for data. On iPhone this is under Cellular, then Cellular Data, where you pick the eSIM. Getting this one line right fixes a surprising share of arrival-day headaches.
The fix: Set the travel eSIM as your phone’s mobile data line, and turn off “allow data switching” so it does not fall back to your home SIM.
3. You expected it to work before you landed
Many travelers install an eSIM at home, see it does nothing on the way to the airport, and assume it is faulty. It usually is not. Most travel eSIMs are designed to activate when they first connect to a network in your destination country, not at the moment you install them, so the line stays dormant until you land. Install the eSIM before you leave, over WiFi, but do not expect data until you arrive and connect to a local carrier. Right after landing, give it sixty seconds to find a network before you start changing settings, because it often sorts itself out on its own.
The fix: Install before departure on WiFi, then wait a minute after landing for the plan to activate on a local network.
4. The APN is not configured
Here is the maddening one: your phone shows it is connected to a carrier, the bars are full, and still nothing loads. That points to the APN, the Access Point Name that tells your device how to reach the carrier’s data gateway. Most eSIMs set this automatically, but some require you to enter it by hand, and your activation email will list the exact APN to use. On iPhone it lives under Cellular, then your eSIM, then Cellular Data Network. On Android it is under the SIM’s Access Point Names. Type it exactly as the provider gives it, since one wrong character means no data.
The fix: Enter the APN from your provider’s activation email precisely, then restart to apply it.
5. You did not restart or toggle airplane mode after landing
Phones do not always re-register on a new network gracefully after a long flight in airplane mode. If your eSIM is set up correctly but still shows no service on arrival, the simplest fix is often the oldest one. Turn airplane mode on for about ten seconds and back off, which forces the phone to search for and latch onto a local network again. If that does nothing, a full restart does the same job more thoroughly and clears up minor glitches. This one step resolves a lot of cases that look scarier than they are.
The fix: Toggle airplane mode off and on, and if that fails, restart the phone entirely.
6. Automatic network selection got stuck
Your phone normally picks a local carrier by itself, but sometimes it fixates on one it cannot fully connect to, or fails to choose at all. When you have waited, confirmed roaming, and restarted with no luck, take control manually. Go into the eSIM line’s network settings, turn off automatic network selection, and let the phone scan for available carriers, then pick one from the list. Your eSIM provider often notes which local networks it partners with, so choose one of those. If the first choice does not connect, try another before assuming the eSIM is broken.
The fix: Turn off automatic selection and manually choose a partner carrier from the network list.
7. The line was never enabled or installed correctly
Occasionally the problem is the most basic one: the eSIM is installed but the line itself is toggled off, or the install did not complete. Check that the eSIM line is switched on in your cellular settings and shows as active, since an installed line can still sit turned off. If you see errors or the plan never appears, you may need to reinstall it, which requires a WiFi or working data connection, so an airport lounge network or hotel WiFi is your friend here. Keep the QR code or activation details handy in case you have to add the eSIM again. Deleting and reinstalling should be a last resort, since some eSIMs can only be installed once.
The fix: Confirm the eSIM line is turned on and active; if it never installed, reinstall over WiFi using your saved QR code.
Get back online in five minutes
If you just landed and have no data, run these in order and you will fix nearly every case:
- Wait one minute for the eSIM to find a local network.
- Confirm Data Roaming is on for the eSIM line.
- Confirm the eSIM is set as your mobile data line.
- Toggle airplane mode off and on, then restart if needed.
- Check the APN against your activation email.
- Select a partner carrier manually.
- As a last step, reset network settings on WiFi.
How We Chose These
We prioritized the mistakes that account for the largest share of “no data on arrival” cases, focusing on settings a traveler can check and fix in minutes without technical help. We weighed how common each issue is across both iPhone and Android, how easy it is to overlook, and how completely fixing it restores service, which is why the data roaming and data line mistakes lead the list. We left out rare hardware faults and provider outages, since those are outside your control and far less common than a missed toggle.
The Bottom Line
An eSIM that shows no data after landing is almost always a setup issue, not a dud. Start with the two big ones, data roaming on for the eSIM and the eSIM set as your data line, then give it a minute, restart, and check the APN. Work down the list and you will be online before you reach baggage claim. Apple’s own guide to using an eSIM while traveling internationally is worth a read before your trip. And if your texts stopped arriving too, see our guide to why a travel eSIM can break your 2FA codes. For more trip-planning help, browse Visboo’s Travel section.
Frequently Asked Questions
Why is my eSIM not working after landing?
The most common reasons are that data roaming is turned off for the eSIM line, your phone is still set to use the home SIM for data, or the eSIM has not activated yet because many activate only when you connect to a network on arrival. Enabling roaming for the eSIM, selecting it as the data line, and waiting a minute fixes most cases.
Do I need to turn on data roaming for a travel eSIM?
Yes. A travel eSIM connects through local partner networks abroad, which counts as roaming, so you must enable Data Roaming for the eSIM line. Keep roaming off on your home SIM to avoid charges. Turning it on for the prepaid travel eSIM does not add any cost.
My eSIM says connected but there is no internet. What is wrong?
That usually points to the APN, the setting that routes your data to the carrier. Some eSIMs need the APN entered manually. Check your activation email for the exact APN and enter it under your eSIM’s cellular data network settings on iPhone, or the Access Point Names menu on Android, then restart.
Should I install my travel eSIM before or after I land?
Install it before you leave, while you have WiFi, since installation needs a connection. But do not expect data until you arrive, because most travel eSIMs activate when they first connect to a network in your destination. After landing, give it about a minute to register before troubleshooting.
What is the fastest fix if my eSIM shows no service?
Toggle airplane mode off and on for about ten seconds, which forces the phone to re-register on a local network, and restart the phone if that does not work. Before that, confirm data roaming is on for the eSIM and that it is selected as your data line, since those two settings cause most no-service cases.
Can I still use my home number while my travel eSIM handles data?
Yes, on a dual SIM phone. Keep your home line active for calls and texts, set the travel eSIM as your data line, and turn off data roaming on the home SIM so it does not incur fees. This is the standard setup that lets you stay reachable while using cheap local data.
