How to view incoming text messages?

[AC Question]

When I tap the Messaging button my phone goes to a screen that invites me to SEND a message. Usually I can view incoming messages by tapping the "go back" icon. Sometimes that has no effect. How can I see the incoming messages when the phone doesn't want to let me?

 

[B. Diddy]

It would help to know which phone and which messaging app you're using.