I have the above phone. Whenever i send a text message it sends as a Chat message. If i go onto options for whoever i am texting, the slider next to 'send as chat message' is always slid to on. If i slide it to off and send a message it sends as a text message, but the next time i try to send a message it reverts back to chat message with the slider on. How can i stop this automatically changing as it is driving me mad. Every thing i have read either doesn't seem to work or i haven't got the option to change what it's telling me to change.