This happens every time.
Samsung Galaxy S2, Android 4.1.2
When sending a NEW text message to someone that i'm not already in a conversation with, the message greys out in the message window after clicking send, the envelope flashes, and i see a "no entry" symbol when i hover over the message text window.
Closing messages and reopening messages fixes the lock.
A check on my phone shows that the message has been sent.
Samsung Galaxy S2, Android 4.1.2
When sending a NEW text message to someone that i'm not already in a conversation with, the message greys out in the message window after clicking send, the envelope flashes, and i see a "no entry" symbol when i hover over the message text window.
Closing messages and reopening messages fixes the lock.
A check on my phone shows that the message has been sent.