History of iMessage 

Hey guys it’s Greg with Apple Explained, and today we’re going to explore how iMessage has evolved since its release in 2011 and how it contributed to Apple being in a sticky situation with the US government. iMessage is essentially a replacement for SMS that works between Apple devices. Like all great instant messaging platforms, it allows users to send and receive messages, stickers, emojis, images, and all sorts of attachments using WiFi, ethernet, or mobile data. In its current form, iMessage works any on iPhone, iPad, and iPod touch running iOS 5 and up or any Mac with OS X Mountain Lion and up. You can register your account to your phone number like SMS or to your email address