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

Here's how to fix iOS 26 iMessage activation bug on phone number, with the fix coming straight from Apple in official ...

iPhone users on iOS 26, iMessage activation may be blocked by an inactive SIM — here's how to fix it. Some users are finding ...

When enabled, the opt-in Contact Key Verification gives automatic alerts if the iMessage key distribution services return device keys that have not been verified (e.g. if an unrecognized device has ...

When things go south with someone, they may suddenly cut off communication, blocking your phone number in the process. If an ...

With iOS 17.2, iPadOS 17.2, macOS Sonoma 14.2, and watchOS 9.2, Apple released an option for further ensuring the private communication of iMessages. Called Contact Key Verification (CKV), this extra ...