Quick answer: If you just landed and your phone has no internet, the cause is almost always a setting rather than a broken eSIM. Turn airplane mode off and give your phone a minute or two to register, make sure the travel eSIM line is switched on and selected for mobile data, turn data roaming on for that eSIM line only, and check that network selection is set to automatic. Work through the checklist below in order before you delete or reinstall anything.
The first five minutes after landing
The moment a full flight lands, hundreds of phones wake up at once and try to register on the same local towers. A short delay is completely normal, and most "my eSIM is dead" moments at the arrival gate turn out to be one of four switches sitting in the wrong position. Resist the urge to remove the eSIM profile from your phone. Deleting a profile can make things worse, because many eSIMs cannot simply be scanned and installed a second time. Instead, run these four checks in order.
1. Turn off airplane mode and wait a minute or two
Once airplane mode is off, your phone starts scanning for local networks, and that scan takes time. Wait until the signal bars appear before judging anything. If you are still showing no service after a couple of minutes, toggle airplane mode back on, wait about ten seconds, then turn it off again to force a fresh network search.
2. Make sure the travel eSIM line is turned on
On iPhone, open Settings, tap Cellular (called Mobile Service or Mobile Data in some regions), select your travel eSIM, and check that "Turn On This Line" is enabled. While you are there, confirm that Cellular Data is set to use the travel eSIM rather than your home line. On Android, open Settings, go to Network and internet, then SIMs, select the travel eSIM, and switch it on. Menu names vary a little between Android brands, so if you cannot find the screen, type "SIM" into the search bar at the top of Settings.
3. Turn on data roaming for the travel eSIM line
This is the single most common reason a freshly installed eSIM shows signal but never connects. Most travel eSIMs reach local networks through roaming agreements, so if data roaming is off on the eSIM line, no data will flow at all. On iPhone, go to Settings, Cellular, choose the travel eSIM line, and enable Data Roaming. On Android, go to Settings, Network and internet, SIMs, choose the travel eSIM, and enable Roaming. Turn it on for the travel eSIM line only. Leave data roaming off on your home line and you will not run into surprise charges from your home carrier.
4. Set network selection to automatic
On iPhone, go to Settings, Cellular, select the travel eSIM line, and open Network Selection to confirm Automatic is on. On Android, the equivalent toggle is under Settings, Network and internet, SIMs, "Automatically select network". If automatic selection keeps failing, try the reverse: switch it off, wait for the list of local carriers to load, and pick one manually. If the first carrier you pick will not register, try another from the list.
Still offline? Work out which of three situations you are in
If all four switches are set correctly and you are still offline, the problem falls into one of three buckets. Our parent guide, eSIM not working: the complete troubleshooting guide, covers every scenario in depth, and the table below tells you where to jump first.
| Symptom | Likely state | What to do next |
|---|---|---|
| The eSIM line does not appear in Settings at all | The profile was never installed | Get on Wi-Fi and install the profile |
| The line appears but stays on "No Service" | Activation did not complete | Re-check the activation steps |
| Signal bars show but nothing loads, or it is extremely slow | APN or network settings issue | Check APN and network settings |
Scenario 1: the eSIM was never installed
If no travel eSIM line shows up in your settings, the installation was never completed. Installing requires an internet connection, so use the airport Wi-Fi steps below, then follow our step-by-step eSIM setup guide for travel to finish the job.
Scenario 2: installed, but it will not activate
If the line exists in settings but never leaves "No Service", the activation step is failing. Work through what to do when your eSIM will not activate, which walks through the causes one by one.
Scenario 3: connected, but unusable or very slow
If you have signal bars but pages will not load, or everything crawls, the connection itself is up and the issue is elsewhere. Start with how to fix slow eSIM data and double-check your APN settings, which are a frequent culprit on Android in particular.
How to recover using airport Wi-Fi
Nearly every international airport offers free Wi-Fi, and it is your safety net when mobile data is completely down. Use it in this order:
- Connect to the airport's free Wi-Fi network.
- Open the email or order page from your eSIM purchase and confirm whether the eSIM was actually installed and whether your plan is active.
- If the profile was never installed, scan the QR code or follow the install link to download it now.
- If nothing works, contact support while you still have Wi-Fi, rather than after leaving the terminal.
When you write to support, include your order number, phone model, the country you are in, and the steps you have already tried. That single message usually saves several back-and-forth replies and gets you reconnected faster.
Prevent this on your next trip
Almost every arrival-day connection problem can be avoided before you leave home:
- Install the eSIM on your home Wi-Fi before departure instead of leaving it for the airport.
- Open the data roaming settings screen once before you fly, so you know exactly where the toggle lives.
- Save screenshots of the setup steps so you can follow them offline.
- Check when your plan starts counting: at purchase, at install, or the first time you connect at the destination.
Frequently asked questions
When should I turn airplane mode off?
As soon as the crew announces that devices may be used after landing. You do not need to wait until you reach the gate, but remember the network search itself can take a few minutes, especially with a plane full of phones reconnecting at once.
Will turning on data roaming cause huge charges?
Enabling data roaming on the travel eSIM line only affects that eSIM, and its usage is handled within the plan you bought. The line to be careful with is your home SIM: leave its data roaming off and your home carrier has nothing to bill you for.
Should I delete the eSIM and reinstall it?
Not as a first step. Many eSIM profiles cannot be reinstalled from the same QR code once deleted, so removal can turn a five-minute fix into a support ticket. Run the checklist and triage above first, and if you are unsure, ask support before deleting anything.
What if I cannot find airport Wi-Fi?
You need some connection to re-download a profile or reach support. Try free Wi-Fi near information desks, cafes inside the terminal, or a travel companion's hotspot.
What is the single best way to avoid all of this?
Install and configure the eSIM at home before departure, and locate the data roaming toggle on your phone in advance. Those two habits prevent the large majority of arrival-day problems.
Coral eSIM plans install with a quick QR scan before you fly, and our support team is there for you while you travel. If a trip is coming up, take a look at the destinations and plans on Coral eSIM and set yourself up before departure day.