About iMessage iMessage is a secure messaging service that you can use to send and receive text messages in the Messages app on your iPhone, iPad, Mac, Apple Watch, and Apple Vision Pro. If someone sends a message to your email address or phone number using iMessage, you receive the message on all your Apple devices that are set up to receive messages sent to that email address or phone number. When you view an iMessage conversation, you see all messages sent from any device, so you can keep ... With iMessage apps, you can send messages later, use Image Playground, collaborate with others in a conversation, decorate messages with stickers and more — without leaving Messages. Learn how to activate iMessage on your iPhone in four easy steps and enjoy its features. Find out how to troubleshoot common issues and FAQs about iMessage. Learn more about sending and receiving text messages, photos, personal effects and more with the Messages app on your iPhone, iPad, Apple Watch, and Mac.