Apple says the issue may stem from having an inactive SIM with the same number as your active SIM. To fix it, remove the inactive SIM and activate iMessage again.

If your iMessage isn't delivered properly, make sure you have a reliable network connection. You should also try restarting ...

iPhone users on iOS 26, iMessage activation may be blocked by an inactive SIM — here's how to fix it. Some users are finding that they can't activate iMessage with their phone number. This results in ...

Since the release of iOS 26 in September, iPhone users have experienced myriad issues. Whether it was the Calendar bug which made it difficult to search for specific keywords or the fact that some ...

Update: iOS 18.0.1 for iPhone resolves the issue as mentioned in the release notes. There’s an unfortunate bug in Apple’s latest software update that you should know about. The bug occurs in the ...

Apple confirms that iMessage may not activate automatically on iPhones running iOS 26 if the eSIM setup is skipped. Here’s ...