I'm seeing a “PDP authentication error”

Updated April 7, 2025

What causes the PDP authentication error, and how do I fix it?

The PDP authentication error stops your phone from connecting to the mobile data network. It can come from a wrong device setting or a network failure.

Why does it happen?

  • An internal network configuration error on your device.
  • A failed eSIM installation or activation.

How do I fix it on iPhone?

  1. 01Turn on Airplane Mode and wait 5 to 10 seconds.
  2. 02Turn off Airplane Mode and restart your iPhone.
  3. 03Once it restarts, go to Settings and reset your network settings.

Depending on your iOS version, you can do this from:

  • General → Transfer or Reset iPhone → Reset → Reset Network Settings, or
  • General → Reset → Reset Network Settings.
  1. 01Check that the eSIM is installed correctly in your device settings. If it isn't, scan the QR code again and restart your phone.

How do I fix it on Android?

  1. 01Turn on Airplane mode and wait 5 to 10 seconds.
  2. 02Turn off Airplane mode.
  3. 03Restart your phone.
  4. 04Go to Settings → General management → Reset → Reset mobile network settings (called Reset network settings on older models).

Note: Menu names may vary by phone brand (Samsung, Motorola, etc.).

  1. 01Make sure the eSIM is installed correctly and set as the line for mobile data.
  2. 02Check that mobile data and data roaming are turned on.

What if it still doesn't work?

If the error continues after these steps, contact us through our support channels so we can help you check your setup or find out if the problem is with the provider's network.