What does "PDP Authentication Failure" mean?

Modified on Wed, 4 Oct, 2023 at 3:25 AM

PDP authentication failure sometimes displayed on iPhones when they try to connect to the data network but failed to do so because of incorrect settings configuration.

Follow the steps below to fix this error. After performing each step, please test to see if the issue is resolved.


  1. Toggle airplane mode: Tap Settings, turn airplane mode on, wait three seconds, and then turn off again.
  2. Restart your iPhone.
  3. Reset network settings: Tap Settings > General > Reset > Reset Network Settings.


If none of the above steps resolves the issue, please do not hesitate to contact us. We are happy to help!

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