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Browse destinationsEstablish the cause before you contact them
This is the practical reason to read the article rather than just ring the airline lounge wifi and start guessing.
SimCorner’s refund terms exclude the single most common cause of an eSIM not working:
“SimCorner Pty Ltd will not provide a refund if the sim Card is not functional due to the handset you are using is locked or incompatible with the provider.”
So if the problem turns out to be a carrier-locked or incompatible phone, that is outside their guarantee. Which means the first thing worth doing is not troubleshooting the eSIM. It is ruling your handset in or out, so you know what conversation you are having.
Step 1. Is your phone unlocked and eSIM capable?
iPhone: Settings, General, About, scroll to Carrier Lock. “No SIM restrictions” means you are unlocked. If it says SIM Locked, that is your answer.
Android: Settings, Connections, Mobile networks, Network operators, turn off Select automatically, wait about 30 seconds. If only one carrier appears, the phone is locked. If several appear, it is unlocked.
eSIM capable: if there is no “Add eSIM” or “Add mobile plan” option in your settings at all, the phone does not support eSIM regardless of what any list says.
Do this first. It takes a minute and it determines everything that follows.
Step 2. Have you actually arrived?
Travel eSIMs generally activate on connecting to a network at the destination, not when you buy or install them. If you installed at home and it shows no service, that is expected behaviour rather than a fault.
Give it a few minutes after landing before deciding anything is wrong. Network registration in a busy airport can be slow.
Step 3. The standard sequence
- Check the eSIM is installed and switched on in your device settings.
- Set it as your mobile data line. On iPhone: Settings, Cellular, tap the line, Turn On This Line, then back to Cellular Data and select it.
- Turn data roaming on for the SimCorner line specifically. This feels wrong and it is correct. See why the data roaming toggle catches people out.
- Turn off “Allow Cellular Data Switching” on iPhone, so the phone cannot quietly fall back to your Australian line.
- Toggle aeroplane mode on for 15 seconds, then off.
- Turn your other SIM off temporarily so the two lines are not competing.
- Check the APN against the details in your SimCorner setup email. Our APN guide explains the field.
- Force 4G instead of 5G. A common fix that almost nobody tries.
- Restart the phone.
- Select the network manually. Turn off automatic selection, wait for the list, and try each operator for 30 seconds.
- Reset network settings as a last resort, remembering it wipes saved wifi and your APN.
Do not delete the eSIM
Standard advice across this category and it applies here. Deleting a travel eSIM is often irreversible, and if you delete it you may need to buy a new one. If you want it off temporarily, disable the line rather than removing it.
Contacting SimCorner
Email to support@simcorner.com, plus chat on their site.
There is no phone number. We searched every page on their site, including the contact page, the FAQ and all policy pages, and found no telephone contact of any kind. SimCorner previously offered phone support and it is a recurring theme in their negative reviews that it was withdrawn. If you were expecting to be able to ring someone, plan around that.
They claim 24/7 human support with no bots.
If you want a refund
Two things shape this and both are worth knowing before you write the email.
The locked or incompatible handset exclusion, quoted above. This is why step 1 matters.
The policy is written for physical SIM cards and does not mention eSIMs at all. SimCorner’s refund policy speaks throughout of a “Sim Card and/or Accessory”, and requires physical return:
“You are responsible for the cost of returning your faulty Sim Card.”
The word “eSIM” does not appear in the policy once. There is no digital goods clause and no carve-out saying eSIMs are exempt from the return requirement. For a business now selling mostly eSIMs, that is an odd gap, and in practice it means the written policy does not really describe what happens when a digital product fails.
Full detail in how a SimCorner refund actually works.
And this is the part that matters most. SimCorner is an Australian company, which means the Australian Consumer Law applies to them straightforwardly. Consumer guarantees are not limited by a refund policy, a stated window, or a clause about returning physical items. If your eSIM genuinely did not work as described, your rights come from the law rather than from their policy page.
That is worth knowing precisely because it cuts the other way too. Buying from an Australian company is the easiest scenario in which to enforce those rights, which is a genuine point in SimCorner’s favour compared with an Irish or Singaporean seller. What Australian Consumer Law says about a travel eSIM that doesn’t work covers it properly.
If you are at the point of choosing another plan, our best travel eSIM guide for Australians compares the current options and their practical trade-offs.
Questions people actually ask
How do I check if my phone is locked?
On iPhone: Settings, General, About, scroll to Carrier Lock. “No SIM restrictions” means unlocked. On Android: Settings, Connections, Mobile networks, Network operators, turn off automatic selection and wait. One carrier means locked.
Does SimCorner have a phone number?
No. We could find no telephone contact anywhere on their site. Support is by email and chat.
Why does my SimCorner eSIM say no service?
Most often data roaming is off for that line, the eSIM is not set as your data line, or you have not connected to a network at the destination yet. Work through steps 2, 3 and 5 above.
Should I delete the eSIM and reinstall it?
No. Deleting a travel eSIM is often irreversible. Disable the line instead if you need it off.
Will SimCorner refund me if my phone is locked?
Their policy says no. It states they will not refund where the SIM is not functional because the handset is locked or incompatible. Check your lock status before you contact them.
Their refund policy talks about posting things back. I bought an eSIM. Their published refund policy is written for physical SIM cards and does not mention eSIMs. In practice a digital product cannot be returned, and your consumer guarantees under Australian law are not conditional on returning anything.
Does Australian Consumer Law apply?
Yes, and more usefully than with most travel eSIM sellers, because SimCorner is an Australian company. Consumer guarantees are not limited by their stated refund window.
Sources
SimCorner guidance, refund terms and contact channels retrieved 17 August 2026 from SimCorner, their terms and conditions and refund policy pages. Consumer law position from the ACCC, as set out in our Australian Consumer Law article.
Written by Lachlan, who runs The SIM Shop from Brisbane and answers the support email himself.
One line about us
If you end up needing a replacement, we are also an Australian shop, we price in Australian dollars, and our compatibility check sits before the buy button. Check your phone is compatible first.
