Travel eSIMs offer a seamless and cost-effective way for travelers to stay connected worldwide. However, some users may experience unexpected error messages during the installation and activation process. Encountering these issues can be unsettling, especially when preparing for a trip. Let’s take a closer look at some of the most common error messages you may encounter when installing your eSIM—and discover practical solutions to fix them.

1. Unable to Add eSIM
One of the most common ways to install an eSIM is by scanning a QR code. Occasionally, you may see an error stating that the eSIM cannot be added or the QR code is invalid. This often happens because each eSIM can only be installed on one device, and the associated QR code is intended for single use. Once your eSIM has been activated on a device, the QR code becomes invalid for future installations.
For this reason, it’s essential not to share your eSIM installation QR code with anyone. If someone else uses your QR code before you do, you will no longer be able to add the eSIM to your own device.
If you encounter this error, first check your device settings to see if the eSIM has already been added—if so, the message is expected. If you haven’t installed your eSIM yet and still receive this error, contact your eSIM provider for further assistance.
2. Cellular plans from this carrier cannot be added
If you receive a message indicating that the cellular plan cannot be added, your device may be carrier-locked. A carrier-locked device is restricted to one network and cannot connect to other carriers. To verify, check your device settings to ensure it says “No SIM restrictions.” If your device is locked, contact your carrier to request the removal of these restrictions. Without unlocking, you won’t be able to use a travel eSIM on your device.
3. eSIM remains at ‘Activating…’
If you’re using an iPhone, you may notice your eSIM status shows ‘Activating…’ after installation, or receive a message stating your eSIM cannot be activated. This typically occurs because eSIM activation happens when your device connects to a supported local network, which requires you to be at your destination with coverage and have data roaming enabled for your eSIM.
If you see the ‘Activating…’ status while still at home, this is completely normal. Once you arrive at your travel destination, enable data roaming for your eSIM, and activation should complete automatically.
4. eSIM displays ‘No number’
If, after installing your eSIM, you notice a ‘No number’ label on your device, there’s no need for concern—this is completely normal for data-only eSIMs. These plans are designed for internet access and typically do not include a phone number, as they don’t support calls or texts. Seeing your eSIM listed on your device confirms it has been added successfully, so you can proceed without worrying about the missing number.The fact that you are seeing the eSIM being listed on your device means that your eSIM has been successfully added to your device, and you don’t have to worry about the ‘No number’ label!
Stay connected wherever your go
eSIM4Travel provides data plans for over 200 countries, offering flexible options to suit your itinerary—whether you’re visiting a single country or traveling across multiple destinations. Regional plans make it easy to stay connected as you move between countries, with data starting at just $1/GB.
You can view the supported networks for each plan directly on our website and apps, allowing you to confidently choose a plan that fits your needs.
If you need more data, simply purchase an add-on to your existing pack and continue enjoying uninterrupted connectivity with your current eSIM.