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I'm having a problem with my text messages sending. Recently when I type a text message and hit send, I discover that not only does my message not send but it disappears.  Typically when you hit send, it says "sending", then "sent" and then "delivered". If it didn't go thru, it used to tell you there was an error but the message would still be there. I've tried restarting. Verizon just did an update to Messages. And there was recently a phone update and none of those things made a difference.  SO frustrating.  Help!!