The message “Unable to Activate eSIM” on iOS devices can appear for various reasons — from internet connection issues and incorrect settings to carrier or device restrictions. In most cases, this does not mean there is a permanent problem, but rather a temporary issue that can be fixed самостоятельно in just a few steps. Below you will find the most common causes and specific instructions on how to solve them.
Check the following:
1. Do you have an active internet connection during eSIM installation?
Installing an eSIM requires a stable internet connection — preferably Wi-Fi. Without it, activation may fail.
How to check:
Go to:
Settings → Wi-Fi → make sure you are connected to a network.
If you are using mobile data, try switching to Wi-Fi and repeat the installation.
2. Has the eSIM already been activated before?
An eSIM QR code is usually single-use. If it has already been used before (for example on another device), reactivation will not be possible — even if you scan the code again. It may also happen that the installation process was started but not completed correctly, causing the system to treat the code as already used.
How to check in settings:
Go to:
Settings → Cellular / Mobile Data and check the list of available SIM cards.
If you see the eSIM listed there (even as inactive), it means it may have already been added to the device.
Tap it and check its status — if it is visible, try activating it instead of reinstalling it.
If you do not see any eSIM but still get an error when rescanning the QR code, the code has most likely already been used before.
3. Does your iPhone support eSIM and is it carrier unlocked?
Not all iPhone models support eSIM, and some devices may be locked to a single carrier.
How to check:
Go to:
Settings → General → About → Carrier Lock
It should display:
“No SIM restrictions.”
If there is a carrier lock, you will need to contact your mobile operator.
4. Is your iOS system up to date?
Older versions of iOS may cause eSIM activation errors.
How to check and update:
Go to:
Settings → General → Software Update
Install any available updates.
After updating, restart your phone.
5. Have you tried adding the eSIM manually instead of scanning the QR code?
Sometimes the problem is caused by a QR code scanning error.
How to add eSIM manually on iOS:
Go to:
Settings → Cellular → Add eSIM → Enter Details Manually
Enter:
- the SM-DP+ address,
- the activation code
(these details are provided by your eSIM provider).
6. Is data roaming enabled? (after installation)
Some eSIMs require roaming to be enabled in order to activate and work properly.
How to enable roaming:
Go to:
Settings → Cellular → select your eSIM → Data Roaming → turn it on
If you have a second SIM card installed, make sure roaming is disabled for that SIM.
7. Is the eSIM enabled and set as active?
After installation, the eSIM may be added but still inactive.
How to check:
Go to:
Settings → Cellular → select your eSIM → make sure it is enabled
Then set it as the default line for mobile data.
8. Have you tried turning Airplane Mode on and off?
Sometimes the iPhone does not properly refresh network connections.
How to do it:
Turn on Airplane Mode for 10–15 seconds:
Settings → Airplane Mode
Then turn it off again.
The phone will reconnect to available networks and try to activate the eSIM again.
9. Are the carrier servers working properly?
Sometimes the issue is caused by the carrier or eSIM provider (for example a temporary outage).
Solution:
Wait a few minutes and try again later.
If the issue continues, contact your eSIM provider.
10. Have you tried resetting network settings?
Incorrect network configurations may block eSIM activation.
How to reset network settings:
Go to:
Settings → General → Transfer or Reset iPhone → Reset → Reset Network Settings
After restarting the device, try adding the eSIM again.
What about Android?
The message “Unable to Activate eSIM” or a similar error may also appear on Android devices. Depending on the phone manufacturer, the message may look different, for example:
- “Unable to download eSIM profile”
- “Failed to add eSIM”
- “eSIM activation failed”
- “Invalid QR code”
- “No network connection”
Despite the different wording, the causes are usually the same as on iOS.
Most common causes on Android:
- no stable internet connection during installation (Wi-Fi required),
- the QR code has already been used,
- the phone does not support eSIM,
- the device is carrier locked,
- Android system is outdated,
- incorrect network settings (APN issues or roaming disabled),
- temporary issue on the carrier side.
How to check and fix the problem on Android
1. Check if your phone supports eSIM
Not all Android phones support eSIM.
Check your device specifications or go to:
Settings → Network & Internet / Connections → SIM Cards
2. Make sure you have a stable Wi-Fi connection
eSIM installation requires internet access — preferably Wi-Fi.
How to check:
Go to:
Settings → Wi-Fi → make sure you are connected to a network
3. Try adding the eSIM manually
If the QR code does not work, you can enter the details manually.
How to do it:
Go to:
Settings → Network & Internet / Connections → SIM Cards → Add eSIM → Enter details manually
Enter:
- the SM-DP+ address,
- the activation code
(these details are provided by your eSIM provider).
4. Check if the eSIM is active
After installation, the eSIM may be added but disabled.
How to check:
Go to:
Settings → SIM Cards → select the eSIM → enable it
Then set it as the default SIM for mobile data.
5. Enable data roaming (if required)
Many eSIMs, especially travel eSIMs, require this setting.
How to enable:
Go to:
Settings → Mobile Network → Data Roaming → turn it on
6. Reset the network connection
Refreshing the network connection often solves the issue.
How to do it:
- enable Airplane Mode for 10–15 seconds,
- disable it and wait for the phone to reconnect.
7. Restart your phone
Restarting the device removes many temporary system issues.
8. Update Android
Older Android versions may cause eSIM problems.
How to check:
Go to:
Settings → System → System Update
9. Reset network settings
If nothing else works:
How to do it:
Go to:
Settings → System → Reset Options → Reset Wi-Fi, Mobile & Bluetooth
(the name may vary depending on the manufacturer).
ℹ️ Important
On Android devices, menu paths may vary depending on the manufacturer (Samsung, Xiaomi, Pixel, etc.), but the way eSIM works and the troubleshooting steps remain essentially the same.
