Typically, messages are sent as SMS when iMessage is unavailable. You can change this behavior by navigating to Settings > Apps > Messages, and unchecking the "Send as Text Message" toggle.

OS 18 iMessage brings smarter messaging with AI, text effects, and tools to enhance communication like never before. iMessage ...

In an increasing number of cases, text messages appear to come from fake ... Apple has created a system for iMessage that automatically blocks links in messages from unknown senders.

But responding to the text—or adding the phone number to one's contacts—enables the links. This means baiting an iMessage user starts with one simple step: getting the user to reply.

Cybercriminals are exploiting a trick to turn off Apple iMessage's built-in phishing protection for a text and trick users into re-enabling disabled phishing links. With so much of our daily ...

"If you aren’t using iMessage, you can use RCS. RCS text messages can be sent to non-Apple devices as well as another iPhone or another Apple device with Text Message Forwarding turned on ...