I updated to IOS 8 and now my messaging has a gray bar with 00:0 in it. How do I get d

this pops up because the phone thinks you are trying to send a i-voice message. go to a one of your contact that you can send a i-Messages too and hit the mic button like you were going to send a voice message then just cancel out of it. once you cancel out of it the gray bar will be gone

Same problem. Photo attached. Don't know what causes it, but I can still type (although typing appears under the gray box). Has happened a few times since update, but not always there. Can't find a way to cancel it

iPhone 6, iOS 9.0.2