You've done everything right. You purchased a plan, scanned the QR code, the eSIM shows up in your settings. You land at your destination, turn off airplane mode, and... no data. The status bar shows no carrier name. Pages don't load. Maps won't update.
This situation is more common than it should be, and the frustrating part is that it's almost always caused by a simple setting that was missed rather than any real failure of the eSIM itself. The good news: most cases resolve in under five minutes once you know where to look.
Work through these checks in order. The first few causes account for the vast majority of post-landing eSIM issues.
Check 1: Is Data Roaming Turned On for the eSIM?
This is the single most common cause of "eSIM not working" reports. The eSIM is installed and valid, but data roaming is switched off on that line, so data traffic is blocked at the system level. No error message appears — the eSIM just silently does nothing.
On iPhone: Settings → Mobile Service → tap on your travel eSIM name → look for "Data Roaming" and make sure it's toggled ON.
On Android (Samsung): Settings → Connections → SIM card manager → tap your travel eSIM → Data roaming: On.
On Android (Pixel): Settings → Network & internet → SIMs → tap your travel eSIM → Roaming: On.
After enabling data roaming, wait 30–60 seconds and check whether the carrier name appears in the status bar. If it does, open a browser to confirm data is flowing.
Data roaming defaults to OFF on most phones as a protective measure against accidentally incurring roaming charges on your home SIM. When you add a travel eSIM, this default often applies to the new line too. Always verify data roaming is explicitly enabled on the travel eSIM, not just assumed.
Check 2: Is Mobile Data Assigned to the Right SIM?
On a dual-SIM phone (one physical SIM plus the travel eSIM), you need to explicitly tell the phone which SIM handles mobile data. If it's still pointing at your home SIM, your home carrier will either refuse data (because you're abroad without a roaming plan) or charge international roaming fees.
On iPhone: Settings → Mobile Service → Mobile Data → select your travel eSIM.
On Android: Settings → Connections → SIM card manager → Mobile data → select your travel eSIM.
The phone usually asks you to confirm this choice. Once set, try loading a page. If it works, this was the issue.
Check 3: Is the eSIM Enabled (Not Turned Off)?
eSIM profiles can be toggled on or off in settings without being deleted. An eSIM that was accidentally disabled will show as installed but inactive — and won't connect to any network.
On iPhone: Settings → Mobile Service → tap your travel eSIM name → at the top, you'll see "Turn On This Line" if it's disabled. Tap it to re-enable.
On Android: Settings → Connections → SIM card manager → find your travel eSIM → if there's a toggle, make sure it's switched on.
Check 4: Is Airplane Mode Actually Off?
It sounds basic, but some phones behave oddly when coming off airplane mode — especially if the phone was charged during the flight. WiFi might have re-enabled while cellular data stayed off, or airplane mode might have partially deactivated with cellular still suppressed.
Pull down the control center (iPhone) or notification shade (Android) and confirm the airplane mode icon is not highlighted. Then check that cellular data is explicitly on in Settings rather than just assuming it toggled back correctly.
If you're unsure, turn airplane mode back on for 5 seconds, then turn it fully off. This forces the phone to re-scan for networks from scratch.
Check 5: Is the Carrier Showing in Settings?
Normally your phone finds and connects to the strongest available carrier automatically. If you see "No Service" or "Searching" after 2–3 minutes, the automatic selection may have stalled.
On iPhone: Settings → Mobile Service → tap your travel eSIM → Network Selection → toggle off "Automatic" → wait while available networks load → select the carrier listed in your eSIM plan documentation (or try each one in the list).
On Android: Settings → Connections → Mobile networks → Network operators → Search now → select from the list.
Once you manually select a carrier and data starts working, you can go back and turn Automatic back on — the phone will stay on that network without you needing to manage it manually.
Not all available carriers in a country are supported by your eSIM plan. If you manually select a carrier and data still doesn't work, that carrier isn't in your plan's network agreements. Try another one from the list, or check the plan documentation for which local networks are included.
Check 6: Try a Full Restart
If the above checks haven't resolved it, restart the phone. A full power-off-and-on cycle clears cached cellular state, resets the modem firmware, and forces a clean reconnection to available networks. This fixes a surprising number of cases where settings look correct but something in the connection state is stuck.
After restarting, give the phone 60–90 seconds to fully reconnect before checking data. If the carrier name appears in the status bar and pages load, you're done.
Check 7: Verify the eSIM Profile Is Still Installed
In rare cases — particularly after a major iOS or Android update, or a factory reset — eSIM profiles can be removed from the device. Go to your SIM/cellular settings and confirm your travel eSIM is still listed. If it's gone, you'll need to reinstall it using the original QR code.
This is why saving your eSIM QR code and confirmation email matters. If the profile disappears (which eSIM providers account for), having the original QR code lets you reinstall it. Contact your eSIM provider if the QR code has expired or can only be scanned once — most providers can issue a replacement for legitimate reinstallation cases.
Check 8: Is Your Phone Carrier-Locked?
A carrier-locked phone will appear to install an eSIM successfully, but data will never activate because the device's network restrictions block it. If you went through the installation process without confirming your phone was unlocked, this could be the underlying cause.
To check on iPhone: Settings → General → About → scroll down to "Carrier Lock." If it says "No SIM restrictions," you're unlocked. If it shows a specific carrier name, the phone is locked to that carrier.
To unlock: contact your home carrier. Most carriers unlock phones that have completed their contract term, often at no charge. The unlocking process typically takes 24–48 hours, which is why checking this before your trip — as covered in our guide on installing an eSIM before your flight — matters.
Check 9: APN Settings (Android Mainly)
APN (Access Point Name) settings tell your phone how to connect to the carrier's data network. On most modern phones with eSIM support, APN settings are configured automatically when the eSIM profile is installed. But on some Android devices, especially older models, you may need to configure the APN manually.
Check your eSIM plan documentation — providers usually list the correct APN settings for manual configuration. On Android: Settings → Connections → Mobile networks → Access Point Names → tap the + icon to add a new APN with the values from your provider.
On iPhone, APN is typically managed automatically by the carrier profile and cannot be manually edited through standard settings. If an iPhone has an APN issue, it usually requires a carrier settings update rather than manual APN input.
Check 10: Is the eSIM Plan Actually Valid for This Country?
Less common but worth verifying: confirm the plan you purchased actually covers the country you're in. Regional plans sometimes exclude certain countries despite covering neighboring ones. Single-country plans obviously only work in their designated country.
Check the plan details in your purchase confirmation or in your eSIM account. If you're in the right country and the plan should cover it, this isn't the cause. But if you're traveling through multiple countries on a regional plan, check whether your current country is explicitly included in the coverage list.
If you've worked through all ten checks and data still isn't working, contact your eSIM provider's support directly. Have your order confirmation number ready, tell them which country you're in, what carrier name (if any) shows in your settings, and which steps you've already tried. Most providers can diagnose and resolve issues remotely within an hour during business hours.
Temporary Workaround While You Troubleshoot
If you need internet access right now while working through these fixes, a few options:
- Connect to airport WiFi for immediate access while you diagnose the eSIM issue
- Use your hotel's WiFi once you arrive to contact support
- If your home SIM supports international roaming and you're okay with the cost for a brief period, enable it temporarily
The eSIM issue almost certainly has a straightforward fix — having emergency WiFi access while you sort it out means you're not completely without connectivity.
Preventing This Next Time
The cleanest way to avoid post-landing eSIM issues is to do a thorough setup check at home before your flight. Specifically: confirm data roaming is enabled on the travel eSIM, confirm mobile data is assigned to the travel eSIM, and do a quick test by manually turning off your home SIM to verify data flows through the travel eSIM on your home network (then switch back).
You won't get a signal from the destination carrier on your home network, but you can confirm the data routing is set up correctly. If data doesn't flow at all through the travel eSIM even on a domestic network, that's a sign something in your settings needs fixing before you board.
For the complete pre-departure setup process, see our guide on when to install vs. activate your eSIM. And if you haven't checked your phone's eSIM compatibility yet, our compatible devices page covers which phones support eSIM and how to verify your device is unlocked.