eSIM activation problems start with the error on your screen
When a HelloRoam eSIM will not install, check 4 causes in order. Read the exact error first. The eSIM may already be on the phone. The phone model may have no eSIM support. A carrier may have locked the phone. Or the network you install over may block the setup. If a second network fails too, email help@helloroam.com.
The error text tells you which check to run
| What you see | What to do |
|---|---|
| Your phone shows an activation error while the eSIM installs. | Screenshot the exact words before you leave the screen. The message decides the next check. |
| A HelloRoam line is already in your phone's list of lines. | Stop installing. The eSIM is already on the phone, so check its settings instead of scanning again. |
| The phone says the eSIM is not supported, or not compatible. | Check eSIM support and the carrier lock before you accept that. |
| The install spins, stalls, or the phone refuses the code. | Restart the phone, then install again on different Wi-Fi or a phone hotspot. |
| The install fails again on a second network. | Stop retrying. Email help@helloroam.com with the evidence listed below. |
The same code works only before the first connection
Your HelloRoam eSIM is in use from the moment it first connects to a supported network in your destination, not from the moment it installs. Before that first connection, the same code can install it again, but only for a limited time after purchase. To check, sign in on our website, open My eSIMs, and open the plan's details. Activated On with a date, or Active on the card, means it is in use: that code is finished and cannot install the eSIM again, so never delete it. Not Activated with a Purchase Date is not proof of the opposite. The website reads a stamp the system adds when the eSIM is enabled or first connects, so it can lag. If you are not sure, leave the eSIM alone and email help@helloroam.com. Deleting an eSIM is never a fix for an install problem, at either stage.
Retry the install on your phone
iPhone
Two checks on the About screen, then one retry from Cellular.
Open Settings, tap General, then tap About.
Scroll down that screen for EID. An EID there means the phone has eSIM hardware.
Check Carrier Lock on that screen. No SIM restrictions means the phone is unlocked.
Restart the phone, then join a different Wi-Fi network.
Open Settings and tap Cellular.
Tap Add eSIM, then Use QR Code, and scan your code.
Or install from the HelloRoam app on this iPhone, with no code to scan.
Illustration
Samsung
Samsung lists and adds eSIMs on the same screen.
Restart the phone, then join a different Wi-Fi network.
Open Settings and tap Connections.
Tap SIM manager and read the eSIMs already on the phone.
Tap Add eSIM, then Scan QR code, and point the camera at your code.
For the model number, open Settings and tap About phone.
Illustration
Pixel
Pixel keeps the install behind the SIMs screen.
Restart the phone, then join a different Wi-Fi network.
Open Settings and tap Network & internet.
Tap SIMs and read the lines already on the phone.
Tap Add SIM, then Set up an eSIM, and scan your QR code.
For the model number, open Settings and tap About phone.
Illustration
Other Android
Menu names change by brand and Android version. Look for the closest match.
Restart the phone, then join a different Wi-Fi network.
Open Settings and tap Network & internet.
Tap SIMs, or Mobile network on older phones, and read the lines already there.
Tap Add SIM, then scan your QR code when the phone asks.
For the model number, open Settings and tap About phone.
Illustration
Safe things to try before you write in
- 1
Install at home over your own Wi-Fi before you travel, instead of at the airport.
- 2
Public Wi-Fi at airports, hotels, offices and filtered networks can stop the phone reaching the service that sets the eSIM up.
- 3
If Wi-Fi keeps failing, run the install over a phone hotspot instead.
- 4
Lost the code? It stays in the HelloRoam app: open the My eSIM tab, then the eSIM's details.
- 5
If a HelloRoam line is already in the list, the eSIM is installed. Our guide to the 'no longer valid' error takes it from there.
- 6
Without eSIM hardware, no retry will work. On iPhone, an EID under Settings > General > About means the hardware is there. For other phones, check our compatible devices page.
- 7
If a carrier locked the phone, the unlock has to come from them. Nothing else gets past it.
- 8
A phone that already stores a lot of eSIMs can refuse a new one. Never delete the HelloRoam eSIM to make room.
- 9
Buying a second eSIM does not get past the same block. On the same phone and network, it can fail the same way.
Run these checks before a retry
- Check whether a HelloRoam line already appears in your phone's list of lines. That check comes before any other step here.
- Change something before you retry. The same scan, on the same phone and network, can repeat the same error.
- Check My eSIMs first. Activated On, or Active on the card, means stop: that eSIM is in use.
- Ready, Not Activated and Purchase Date are not permission to remove it. The stamp can lag behind the phone, so if you are unsure, email help@helloroam.com instead.
- Never delete the HelloRoam eSIM to make room for another one. If the phone looks full, write to us before you remove anything else.
Evidence to send when an install keeps failing
Email help@helloroam.com while the error is still on the screen. A screenshot tells us more than a description does.
- Your order number.
- Your phone make and model, and the exact model number.
- The exact error message, or a screenshot of it.
- On iPhone: a screenshot of Settings > General > About showing Carrier Lock.
- Whether a HelloRoam line already shows in your phone's list of lines.
- The kind of connection you installed over: home Wi-Fi, hotel, airport, office, other public Wi-Fi or a hotspot.
- What you already tried, including the restart and any other Wi-Fi, and how many attempts.
- The country and city you are in now.
Crop any QR code out of your screenshots before you send them.
help@helloroam.comInstall error questions, answered
Why does my eSIM activation keep failing?
A HelloRoam eSIM activation keeps failing when each retry meets the same block on the same phone and network. Work through 4 checks in order. First, look in your phone's list of lines. A HelloRoam line there means the eSIM is already installed, and our guide to what 'no longer valid' means covers that case. Next, confirm the phone supports eSIM and rule out a carrier lock. Then install over a different network, because some Wi-Fi blocks the setup.
Why is my iPhone stuck on 'Activating...' when installing an eSIM?
An iPhone can stay on Activating when the network it installs over blocks the service that sets up the eSIM. Some airport, hotel and office Wi-Fi does this, and the same network can give the same wait. Restart the iPhone, then switch to another Wi-Fi or a hotspot from another phone. Apple's eSIM setup help says to check after each step whether it worked. Here, look for the HelloRoam line in Settings > Cellular before you scan again.
Why won't my eSIM activate on a Samsung or other Android phone?
Samsung and other Android phones can fail for the same 4 causes as an iPhone. The e-sim may already be installed, the phone may lack eSIM support or be carrier locked, or the network may block the setup. Retry with Add eSIM > Scan QR code on a Samsung, or Add SIM > Set up an eSIM on a Google Pixel. Once it installs, turn on its line and data roaming in your destination, and set mobile data to it.
Does 'Unable to Activate eSIM' always mean my iPhone is incompatible or locked?
No. That message alone confirms neither. It means the phone refused the eSIM at that moment, and a blocked network or a phone full of eSIMs can show it too. You can check the lock and eSIM support yourself in Settings > General > About. Carrier Lock reads No SIM restrictions on an unlocked iPhone. An EID on that screen means the phone has eSIM hardware. Check both before you accept either as the cause.
My eSIM won't activate on my iPhone 16. Is that model not supported?
The model name alone cannot tell you, because some regional versions of an iPhone model ship with no e SIM support. Check the phone itself in Settings > General > About. An EID there means the phone has eSIM hardware, so move on to the lock and the network. No EID means no scan can add an eSIM to that phone. Our compatible devices page lists supported phones by name.
Sources for this guide
The steps and menu names for your phone's settings follow these pages. Each entry shows the date we read it.
- If you can't set up an eSIM on your iPhone, Apple. Retrieved
- Set up eSIM on iPhone, Apple. Retrieved
- Find the serial number or IMEI on your iPhone, iPad, or iPod touch, Apple. Retrieved
- How to unlock your iPhone for use with a different carrier, Apple. Retrieved
- Use eSIM while traveling internationally with your iPhone, Apple. Retrieved
- Use Airplane Mode on your iPhone, iPad, Apple Watch, and Apple Vision Pro, Apple. Retrieved
- If you can't connect to Wi-Fi on your iPhone or iPad, Apple. Retrieved
- Use cellular data on your iPhone or iPad, Apple. Retrieved
- Use Dual SIM on iPhone, Apple. Retrieved
- Galaxy eSIM and supported network carriers, Samsung. Retrieved
- Samsung Galaxy S25, S25+, S25 Edge and S25 Ultra User Guide, Samsung. Retrieved
- SIM cards for your Galaxy phone or tablet, Samsung. Retrieved
- Set up a new eSIM, Google. Retrieved
- Connect to mobile networks on a Pixel phone, Google. Retrieved
- Control airplane mode, private DNS & other network settings, Google. Retrieved
- Find your IMEI and other Pixel phone ID numbers, Google. Retrieved
- Android Settings app strings, res/values/strings.xml (android16-release), Android Open Source Project. Retrieved
- Android Settings app strings, res-product/values/strings.xml (android16-release), Android Open Source Project. Retrieved
About this guide
- Covers
- This guide covers a HelloRoam eSIM that will not install or activate on iPhone, Samsung Galaxy, Google Pixel and other Android phones, and nothing else. Our guide on when to install covers timing.
- Written by
- HelloRoam Editorial Team
The HelloRoam team that writes every help guide, working from the HelloRoam app and the phone makers' own help pages.
- Last updated
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- Spot a mistake?
- Email help@helloroam.com and we will fix it