In iOS 17.2 and later, Apple includes a Contact Key Verification feature that aims to enhance your messaging security on an iPhone. This article explains why you might want to use the feature and ...

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 ...