Start here
Confirm that the plan covers your current country and dates, the travel line is on, it is selected for mobile data, and its required roaming setting is enabled. Then refresh the connection with Airplane Mode and a restart. Check APN or manual network selection only against the provider's own instructions. Do not delete the eSIM unless support confirms it can be reinstalled.
1. Identify what “not working” means
| Symptom | Likely layer | First place to look |
|---|---|---|
| The profile will not install | Compatibility, lock, QR code or internet | Phone model, Carrier Lock and provider install method |
| Installed but says activating | Destination, validity or network registration | Activation policy and current coverage |
| Signal bars but no data | Data-line selection, roaming or APN | SIM settings and provider instructions |
| No Service / Searching / SOS | Line disabled, unsupported network or outage | Line status, coverage and network refresh |
| Data works but home SIM was charged | Automatic data switching or home-line use | Default data line and home-carrier records |
| Worked, then stopped | Data exhausted, validity ended or outage | Provider dashboard and plan terms |
2. Run these six checks in order
You are inside the purchased plan's destination and validity period
The travel eSIM appears in Settings and the line is turned on
The travel eSIM—not the home SIM—is selected for mobile data
Data roaming is on for Travel if the provider requires it
Automatic mobile-data switching is off
The provider app shows an active plan with data remaining
A plan for Japan will not normally activate while you are still in the United States. A regional plan may also exclude a territory that looks geographically nearby. Open the purchased plan—not a provider's general coverage page—and confirm the supported countries, local networks, validity and remaining allowance.
If you installed but never checked the activation trigger, read when installation and activation happen. The provider's status page is better evidence than whether the phone merely lists the profile.
3. Refresh registration without erasing the eSIM
- Turn Wi-Fi off so you can see whether cellular data works.
- Turn Airplane Mode on for at least 15 seconds, then turn it off.
- Wait a few minutes in an area with reasonable signal.
- Turn the Travel line off and back on.
- Restart the phone.
- Check for an operating-system or carrier-settings update on trusted Wi-Fi.
Apple recommends the Airplane Mode refresh, restart, carrier check and software update for No Service or Searching. Google similarly documents Airplane Mode, network-settings and update checks for Pixel connectivity. These steps are reversible; deleting the profile is not.
If the profile has already been removed, use the deleted eSIM recovery guide before rescanning a QR code or purchasing a replacement.
A network-settings reset can remove remembered Wi-Fi and other network preferences. Use it only after recording required settings and following the phone manufacturer or provider instructions.
4. Check APN and network selection only from official instructions
An Access Point Name tells the phone how to reach the provider's data service. Some travel eSIMs configure it automatically; others supply a specific APN. Compare the phone's value character-for-character with the purchased plan instructions. Do not copy an APN from an unrelated blog, forum or different destination package.
Automatic network selection is normally the starting choice. If the provider names a supported local carrier and automatic selection fails, follow its instructions to select that network manually. A visible carrier name does not prove the plan covers it.
5. iPhone: verify the travel line and roaming separately
- Open Settings → Cellular and confirm Travel is listed and turned on.
- Open Cellular Data and select Travel.
- Turn off Allow Cellular Data Switching.
- Open Travel → Cellular Data Options and apply the provider's Data Roaming instruction.
- Open Settings → General → About and accept a carrier-settings update if offered.
If the status bar shows SOS, Apple says the iPhone is not connected to its cellular network, although emergency calls may still work through other networks in supported countries. Confirm coverage with the eSIM provider; only it can inspect the purchased account and partner-network access.
For installation-specific failures, use our iPhone eSIM installation guide. A missing Travel line is different from an installed line that has no service.
6. Pixel or Galaxy: check SIM, data and roaming controls
Google Pixel
Open Settings → Network & internet → SIMs. Confirm the travel SIM is enabled and selected under Mobile data. Pixel exposes roaming, preferred network, operator and Access Point Names within the SIM's network settings. Only one SIM can be the default for data.
Samsung Galaxy
Open Settings → Connections → SIM manager to enable the eSIM and select it for Mobile data. Roaming and network options are normally under Connections → Mobile networks, though menus vary by model, carrier and One UI version. Temporarily disabling the home SIM can help isolate whether the travel line works, but it may also stop home-number calls and messages.
Keep Travel as the only data line
Your home number can remain available without becoming the roaming-data fallback.
7. Escalate with evidence—not repeated experiments
Contact official provider support when the plan is active and in coverage but cannot register, the APN or supported network is unclear, the QR code is rejected, or the provider dashboard disagrees with the phone. Send:
- The exact error text and when it appeared.
- Your phone make, exact model, operating-system version and purchase region.
- The destination, approximate location and time.
- Screenshots of line, data, roaming and provider-status settings with sensitive identifiers hidden.
- Steps already attempted and whether Wi-Fi was off during the test.
Share an IMEI or EID only through the provider's official private support channel when requested. Do not keep changing APNs, resetting the phone or rescanning a single-use QR code while a support case is open.
Common questions
Why is my travel eSIM not working after landing?
The most common layers to check are destination coverage, activation status, remaining data, the selected mobile-data line, roaming and APN settings. Work through them in that order, then refresh network registration with Airplane Mode and a restart.
Should I delete and reinstall the eSIM?
Not unless the provider confirms the profile is reinstallable or supplies a replacement. Many QR codes are single-use, and deletion can turn a connection problem into an installation problem.
Why does the phone show bars but no internet?
The line may be registered for network service while mobile data is using the other SIM, roaming is disabled, the APN is wrong, or the package has no usable data. Check each layer separately.
Can a VPN cause the problem?
It can interfere with browsing even when cellular service works. Temporarily disable the VPN for a controlled test, then re-enable it. Never remove security software permanently just to force a connection.
Official sources used
- Apple Support: If you see SOS, No Service, or Searching — connection refresh, dual-SIM and international-roaming checks.
- Apple Support: If you can't set up an eSIM on your iPhone — setup, update and carrier escalation guidance.
- Google Pixel Help: Connect to mobile networks — SIM settings, APN, operator selection and connection troubleshooting.
- Samsung Support: Connection options for your Galaxy phone or tablet — SIM manager and mobile-network settings.
- Saily Help Center: How to activate my Saily eSIM? — activation, roaming and APN checks.
Sources reviewed August 8, 2026. Settings and supported networks vary by phone, software, package and destination. Purchased-plan instructions take priority.