If you're wondering why your messages aren't coming in on iOS devices or computers, it's not just you.

Twitter is quickly filling up with messages of frustrated iMessage users. The service appears to be down across all platforms, and with no official acknowledgement as of yet, there is no indication of when it may come back.

This isn't the first time as of late that iMessage has gone down, and typically it doesn't take too long for it to return. It is definitely annoying and inconvenient, however.