Facing "PDP authentication failure" on my iPhone
[Re-Titled by Moderator]
iPad Air 2, iPadOS 14
rusu243 wrote:
https://discussions.apple.com/content/attachment/32407dd4-51d4-43c3-87d4-435ff4c8a381
“PDP authentication failure” means the automatic setup that allows your device to connect to the cellular data network didn't go as planned.
Did you contact your Carrier / cell provider(?) for support
put your iPhone in diagnostics mode - identify potential hardware and software issues
How to put your iPhone in diagnostics mode - Apple Support
ref: PDP Authentication failed - Apple Community