“Unable to Complete Cellular Plan Change” message is an installation error that indicates that the installation of your eSIM hasn’t progressed correctly. This can happen for various reasons, including:
1. Having more eSIMs than your device can support.
2. Trying to reinstall an eSIM that has already been installed.
3. Poor internet connection during the installation.
4. Having mobile data turned off in your device settings.
If you encounter this error repeatedly, please take a screenshot of the message and reach out to Esimatics Help Center for additional assistance in resolving the issue.