Apple's walled garden of software and hardware products is what makes it extremely strenuous to try to enjoy devices and services out of this bubble. iMessage is a great example of a service that ...

Are you getting the iMessage is Signed Out pop-up whenever you open a thread in the Messages app on your iPhone?

If that doesn't help, we have a few more ideas This article helps you troubleshoot iMessage Activation errors. When you experience an iMessage activation error, you’ll typically find that ...