Unable to Complete Cellular Plan Change: what to check before you scan again
The alert means the iPhone started adding the eSIM and could not finish, and it does not tell you why. The causes come down to four: the phone could not reach the provider's server, the plan is already on the phone, the phone will not take a line from another operator, or the server turned the request down. Check them in that order, and do not delete anything while you do.
Check if my phone is compatibleOne alert for several different failures
When you scan an eSIM QR code, the iPhone contacts the provider's eSIM server, known as SM-DP+, and asks it for the profile linked to that code. The GSMA specification that every eSIM follows lists the reasons a server can say no: the code is refused, the download order has expired, the maximum number of download attempts has been reached, or the order was tied to a different phone and the EID does not match.
The iPhone shows the same alert whatever the reason, so the message alone does not tell you which one you hit. That is why the checks below go from the ones you can see on your own phone to the ones only the seller can see on the server. Work through them in order instead of scanning the code again and again.
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Will it work on my phone?
On iPhone: Settings → General → About, and scroll to EID. If there is an EID, your phone takes eSIMs. Every iPhone from the XS (2018) onwards does.
On Android: Settings → About phone → Status, and look for EID. If there is an EID, your phone takes eSIMs. Most Galaxy S20, Pixel 3 and later do.
It also has to be carrier-unlocked. If you bought it outright or your contract is over, it almost certainly is.
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How it works
- 1Choose and payCard, Apple Pay or Google Pay. No account.
- 2Install it at homeThe QR arrives by email. Scan it on wifi in a minute.
- 3Connect when you landTurn on data roaming for the eSIM and you are online.
First: is the new line already there?
Open Settings, then Cellular (Mobile Data or Mobile Service, depending on your region) and look at the list of lines. A profile sometimes finishes downloading even though the alert appears, and the plan is sitting there with a generic label. If you see a line you did not have before, the installation worked. Do not scan the code again: it has already been used.
Apple's own troubleshooting for an eSIM that will not set up starts here too. Turn Airplane Mode on and off, and if the line you are adding appears in Cellular, turn that line off and back on. Then restart the iPhone. If the line now shows up but you are still at home, that is fine: a travel eSIM is meant to connect at your destination. What to switch on when you land is in our guide to an eSIM with no internet.
Then: connection and software
Apple lists three things an iPhone needs before it can set up an eSIM: a Wi-Fi network or hotspot, an eSIM from a provider that supports eSIM, and the latest version of iOS the phone can run. In some countries eSIM-only models can activate without Wi-Fi, but at home, Wi-Fi is the simple answer.
The Wi-Fi has to actually reach the internet. Hotel, train and airport networks that are still waiting for you to accept terms on a login page are connected in name only. Open a web page first; if it loads, scan again once. Apple also suggests checking the carrier settings: in Settings, General, About, scroll to the eSIM section and tap the version number next to Carrier. If an update is waiting, you will be asked to choose OK or Update.
A full eSIM list, or a phone that only takes one operator
Apple says an iPhone can manage eight or more eSIMs, with two of them active at the same time. If you have collected travel eSIMs from several trips, check the list. Deleting an old one you are sure you will never use again frees space, but think twice: deleting is permanent for most travel eSIMs, as we explain in what happens if you delete an eSIM.
The other common blocker is a carrier lock. Apple states that to use two carriers, your carrier must unlock your iPhone, or both plans must come from the same carrier. A travel eSIM always comes from someone other than your home operator, so a locked iPhone turns it away. Go to Settings, General, About and look at Carrier Lock: No SIM restrictions means you are clear. Our guide on checking whether a phone is unlocked covers what to do if it says anything else.
When only the seller can see the cause
If the line is not there, the Wi-Fi works, iOS is current, there is room and the phone is unlocked, what remains is on the server: an order that expired, one that ran out of attempts, or a profile already linked to another EID. You cannot fix those from the phone, and repeated scans make it worse, because the GSMA specification requires servers to limit the number of download attempts.
Apple's advice for this stage is to note the exact error message and have your IMEI or EID ready, both in Settings, General, About. Send the seller that, plus your order email, iPhone model and a screenshot of the alert. With that, Snoozim can check the profile on the server and, if the fault is on the service side, fix it or replace the eSIM.
Did the eSIM install even though I saw the alert?
Possibly. Look in Settings, Cellular: if a new line is listed, the profile is on the phone and you should not scan the code again.
Does this alert mean my iPhone does not support eSIM?
Not on its own. An iPhone without eSIM support would not offer to add an eSIM at all. The usual causes are the connection, a carrier lock, a full eSIM list or a problem with the order on the server.
How many times can I scan the same QR code?
Try again once after fixing the connection. If it fails again, stop and contact the seller, because eSIM servers limit download attempts and a used-up order cannot be scanned back to life.
Should I delete old eSIMs to make room?
Only ones you are certain you will never need. Apple says an iPhone can manage eight or more, and a deleted travel eSIM usually cannot be installed again.
Get your eSIM before you fly: the QR arrives by email in minutes and the plan only starts when you connect at your destination.
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