Yesterday my S4's send button stopped working. While in the messaging app, I type a message, and go to hit send, and it doesnt register a touch. All other apps work fine; the facebook messenger for example. The phone WILL send messages, but only if I hit "back" after typing my message. It also will send if I turn the phone 90 degrees to landscape. But it will nOtherwise, when I hit the "send" button it doesnt even register. However, it will register any other touch such as attachments or touching a contact face or message all work.
I am CERTAIN the screen is okay; because the screen retains functionality in all other apps on that part of the screen.
I have done a force stop/clear all data with the messaging app and restarted the phone. I dont know what to do, messaging is already frustrating enough with an S4, but now I have to hit back every time I want to send a text, too?