Important Note: These instructions only apply to our Voice + Data eSIM product
If you are receiving a “PDP Authentication Failure” error message, this may indicate that there was an issue with the installation of the APN (Access Point Name) profile or that there are conflicting settings on your device from another service.
To resolve the issue, please try following the steps below (please DO NOT delete your Mobal eSIM) and let us know if any issues persist –
- Reset your network settings by going to: Settings > General > Reset > Reset Network Settings
- Go to Settings > General > VPN & Device Management and delete any APN configuration profiles that are shown.
- If there is a secondary SIM / eSIM installed in your device, switch your phone off and remove the secondary SIM for now (if it’s a physical SIM) or temporarily disable (but do not delete) the secondary eSIM. Please also ensure that our eSIM remains enabled and is set as the primary eSIM for Voice and Data.
- Reboot your iPhone handset to refresh the connection.
- Connect to WiFi and then from the Safari web browser (do not use an alternative browser), please Download the APN Profile found at the following link: APN Profile Download
- Go to: Settings > VPN & Device Management > Select the profile > Install
- Please also ensure your iPhone handset is configured to prioritize the 4G LTE connection by going to: Settings > Cellular/Mobile Data > Cellular/Mobile Data Options > Voice & Data > Select 4G / LTE option
If any issues persist after completing these steps, please switch the “Flight Mode” / “Airplane Mode” feature on for 30 seconds and then disable it again to see if this resolves the issue.
If there is still no change, please reboot your device to refresh the connection and then retest again after a few minutes.