I have been using this iphone 8 for last 10 months and suddenly the phone did not connect to the internet. It says PDP authentication failure. I did also resets as described in other websites but still no luck.
[Re-Titled by Moderator]
iPhone 8, iOS 12.0.1
Generally, with that kind of issue, resetting network settings can help.
Settings>General>Reset>Reset Network Settings, keeping in mind that the procedure also resets Wi-Fi networks and passwords, cellular settings, and VPN and APN settings that you've used before, but no other date are affected.
When done, restart your iPhone, and test it.
In some other cases, you need to contact your cellular carrier, explain your problem, and they should be able to help you.
Regards
Giulio
PDP authentication failure iPhone
