It’s not just you: iMessage is down. We’re not sure why or when it will be fixed, but the internet is exploding with more than enough news about the event. iMessage, Apple’s messaging client for iOS and Mac allows what would normally be text messages to be sent via the service and for messages to show up on iPads and Macs. While iPhones will send text messages via iMessage, it does fall back to normal SMS delivery over your cellular network if iMessage isn’t available. Long story short, you should still be able to receive SMS messages on your iPhone, just don’t expect to see them pop up on your Mac or iPad until this problem is fixed.