This description details the launch of Apple's iMessage service in 2011. The iMessage service was a revolutionary messaging platform that allowed users to send and receive messages, photos, videos, and other media across multiple Apple devices. The service was available for iPhone, iPad, and iPod touch users,
From Wikipedia
iMessage is an instant messaging service developed by Apple and launched on October 12, 2011. iMessage functions exclusively on Apple platforms, including iOS, iPadOS, macOS, watchOS, and visionOS. iMessage uses the Messages app client.