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Activation errors, QR codes that will not scan, and no service after landing, in the order worth checking.
Most eSIM problems come from one of four things: the phone is carrier locked, the profile was installed but not selected for data, roaming is switched off on the travel line, or the install never completed because the connection dropped partway. Each has a different fix, and trying them in order saves deleting a profile that was fine.
Deleting is the step people reach for first and the one that costs the most. On many travel plans a profile can only be installed once, so a deleted profile is a deleted plan. Work through the checks below first. Deleting belongs at the end, and only after the plan's own terms say it can be reinstalled.
Every phone lets you switch a line off and leave it in place. If you want the travel plan out of the way, switch it off. That is reversible, and deleting is not.
Scanning fails for ordinary reasons before it fails for technical ones. The code needs to be sharp and reasonably large on screen or paper, and the camera needs enough light. If you are trying to scan a code displayed on the same phone you are installing to, that cannot work: use a second screen, or use the manual entry route instead.
Every QR code is just a text string. Your plan details include an activation code, sometimes called an SM-DP address and activation code. Entering those by hand installs exactly the same profile. On iPhone this is Enter details manually on the add eSIM screen; on Android it is the equivalent option in the SIM setup flow.
If the profile installed once already, on this phone or another, the code is spent. That is not a fault in the code. Check the phone's list of installed lines before assuming the install failed.
This is the most common case and it is usually a setting rather than a fault. The profile is on the phone, the phone shows the line, and no data comes through. Three switches control it, and all three have to be right.
Installing a profile does not make it the data line. On iPhone, Settings, Cellular, Cellular Data, and select the travel plan. On Android, Settings, Network and internet, SIMs, choose the travel line and set it for mobile data.
Travel plans work through partner networks abroad, which the phone counts as roaming. If roaming is off for the travel line, it will show signal and carry nothing. Switch roaming on for the travel line only, and leave it off for your home line so that one does not carry data at roaming rates.
A profile can sit installed and switched off, particularly if it was added before the trip. Check the line's own toggle in the list of SIMs.
A line that was carrying data and stopped is a different problem from one that never started. The usual causes are the plan running out of data or reaching its end date, the phone latching onto a network the plan does not include, or an airplane mode toggle that did not fully reset the connection. Check the plan's remaining data first, since that costs nothing to rule out.
Airplane mode on for fifteen seconds, then off, makes the phone re-register. If that does not restore service, set network selection to manual in the mobile network settings and pick a different partner network from the list, then set it back to automatic.
A full power off and on clears a surprising share of these. It costs a minute and it is the step to take before you consider removing anything.
If the install itself fails, the phone is telling you something specific. A carrier locked handset accepts the install and fails at activation. A handset with no eSIM hardware does not offer the option at all. And an install started on a weak connection can fail partway, leaving nothing behind.
On iPhone, Settings, General, About, and read Carrier Lock: anything other than No SIM restrictions means the network that sold the handset still holds it. On Android, look for Network lock status in the connections part of Settings.
The install pulls the profile from a server, and a connection that drops halfway leaves the process incomplete. Wifi at home before the trip is the reliable moment to do it.
Deleting removes the profile from the phone completely. The plan behind it is not automatically cancelled and any data left on it is not automatically refunded, but the profile is gone from that handset. Whether the same plan can be installed again depends entirely on its own terms: some allow a reinstall, many do not. Read that before you delete, not after.
Contact the plan's support with your order details. Some plans can issue a fresh install code, some cannot. Nothing on the phone itself can bring a deleted profile back.
Removing a travel eSIM leaves your usual line exactly as it was, whether that line is a physical SIM or another eSIM profile.
| What you see | Most likely cause | First thing to try |
|---|---|---|
| QR code will not scan | Code on the same screen, or already used | Use manual entry with the activation code |
| Install fails partway | Connection dropped during install | Retry on wifi |
| Installs, then activation fails | Handset is carrier locked | Check Carrier Lock or Network lock status |
| Line shows, no data | Travel line not selected for data | Set it as the data line in settings |
| Signal bars, nothing loads | Data roaming off for that line | Switch roaming on for the travel line only |
| Worked, then stopped | Plan used up, or stale network registration | Check remaining data, then airplane mode off and on |
| eSIM option missing entirely | Handset has no eSIM hardware | Look for an EID under About; if absent, no eSIM |
Check three settings in order: the travel line is selected as the data line, data roaming is on for that line, and the line itself is switched on. Those three cover most cases. If the line never activated at all, check whether the handset is carrier locked.
Usually the plan has run out of data or reached its end date, or the phone is holding a stale network registration. Check the remaining data first, then switch airplane mode on for fifteen seconds and off again to force a fresh search.
The three common reasons are that the code is being displayed on the same phone you are installing to, that it has already been used once, or that the image is too small or blurred to read. Manual entry with the activation code installs the same profile without a camera.
That depends on the plan, not on the phone. Some plans issue a code that can be used again, many issue one that cannot. Check the plan's terms before deleting, because the phone cannot restore a deleted profile.
The profile is removed from the handset. The plan behind it is not cancelled by that action, so contact its support with your order details and ask whether a fresh install code can be issued. Your home line is unaffected.
You do not need to remove it. Switch the travel line off and set your home line back as the data line, and the phone behaves exactly as before. Keeping the profile in place means you can switch it back on for the next trip.
There is no reset in the sense of a factory reset. The equivalent is switching the line off and on again, then restarting the phone. If it still does not carry data, work through the roaming and data line settings before considering removal.
Either the handset is carrier locked, in which case the profile installs and activation fails, or the install is being attempted on an unstable connection. Read Carrier Lock under Settings, General, About first, then retry the install on wifi.
In order of how often it comes up: a carrier lock on the handset, roaming switched off on the travel line, the travel line not set as the data line, and an install interrupted by a dropped connection. Genuine faults in the profile itself are rare.
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