Call failed with no network after iOS 18 to iOS 26 update on iPhone

ZukhanyeZakade wrote:

I can’t make calls, I can’t receive them, I can’t connect to the internet after updating from IOS 18 to 36

[Re-Titled by Moderator]

Original Title: Call failed, no network

all of that is your phone carrier features. Report the issue to them so they can troubleshoot it.

What model phone do you have? There have been some reports of iPhone 14 series phones with dual sim slots with this problem where it was resolved by moving the SIM to the other slot.

See this thread:

Call failed on iPhone 14 Pro Max after iO… - Apple Community