How to Resolve the 'Unable to Complete Cellular Plan Change' Error

The "Unable to Complete Cellular Plan Change" error message indicates an installation failure, which can be caused by various factors, including:

• 1. The device has too many eSIMs installed. While eSIM-compatible devices can support multiple eSIMs, the number of eSIMs that can be active simultaneously varies by model. For example, iPhones can store between 5 and 10 eSIMs depending on the device’s storage. For more details, please consult your phone manufacturer.
  • If you have reached the maximum eSIM storage on your device, you can remove old eSIMs. Instructions for removing eSIMs can be found here: How can I remove an eSIM from my device?
• 2. Cellular or mobile data is disabled in the device’s settings.
• 3. Attempting to install an eSIM that has already been installed: most eSIMs can only be installed once.
  
  • To verify if the eSIM is already installed on your device, go to Settings > General > About, and scroll down to find the ICCID (a 20-digit number starting with 89XXXXXXXXXXXXXX and ending with a random extra number). If the ICCID is already installed, you may need to make a few adjustments to get connected. Please refer to your eSIM installation page for detailed instructions.
• 4. Poor connection while attempting to install the eSIM, commonly occurring with ship or public Wi-Fi.

If the issue persists, please contact support.