This error means the phone could not establish a mobile-data session. Possible causes include the APN, roaming settings, plan state or the network accepting the connection.
Check in this order
- Confirm that the SimFuse line is selected for mobile data and has Data Roaming enabled as instructed.
- Check coverage, remaining data and validity in the app.
- Compare the APN with the instructions for this exact eSIM. Do not erase it, copy another plan's APN or guess a value. See "Check the APN for your eSIM".
- After a confirmed settings change, toggle airplane mode or restart and test again.
- If the plan supports another local network, follow "No service, or connected to the wrong network".
If the required APN is missing from the instructions or the field cannot be edited, ask support. Send the current country, error, device and APN value you tried. Do not reset all network settings as a first step.