I started receiving the notification text messages not sent. I could not not find those so I deleted ALL text messages, power cycled the phone, and I am STILL getting the notification "2 Text Messages Not Sent" what gives? This is annoying.
try a battery pull ... battery out, wait at least one full minute, put back and restart. Might take care of the lingering message. Also, if it's in the notification panel, there is a "clear" button in the upper right corner. That will erase messages on the panel.
this was happening to me last night as well. I sent a message to a friend and the phone immediately said the message was not sent. So I tried again, and again, and again, until my friend texted me saying stop sending the same message over and over. So apparently though my phone said it didn't send, it actually did. I live in Maryland, and I am wondering if it was the phone, the service around here, or possibly (doubtfully) my friends phone/service as they are an ATT customer.