https://helpforum.sky.com/t5/Sky-Mobile/Sky-sim-pdp-authentication-failure/m-p/5161148#M277762 I have had a dozen replacement sims for one of my sky mobile numbers on an iPhone 11. The sim always shows 3g and when you try to connect to a website: pdp authentication failure. I have tried everything including resetting network settings, popping the sim out and back in, switched to an esim and back to a physical sim etc. It's not a device issue as my other sky sim on the same plan works fine in the same iPhone 11. I'm out of ideas, if anyone has faced the same issue? Sun, 07 Dec 2025 20:58:23 GMT SNl 2025-12-07T20:58:23Z https://helpforum.sky.com/t5/Sky-Mobile/Sky-sim-pdp-authentication-failure/m-p/5161148#M277762 I have had a dozen replacement sims for one of my sky mobile numbers on an iPhone 11. The sim always shows 3g and when you try to connect to a website: pdp authentication failure. I have tried everything including resetting network settings, popping the sim out and back in, switched to an esim and back to a physical sim etc. It's not a device issue as my other sky sim on the same plan works fine in the same iPhone 11. I'm out of ideas, if anyone has faced the same issue? Sun, 07 Dec 2025 20:58:23 GMT https://helpforum.sky.com/t5/Sky-Mobile/Sky-sim-pdp-authentication-failure/m-p/5161148#M277762 SNl 2025-12-07T20:58:23Z