Hi, I recently posted (i cant find post): "Hello, I'm with o2 on pay as you go, and i can send texts to certain people, and other people the send bar goes to about 90% then stops and shortly after a red explaination mark comes up and says "Message send failure" And when i click the exclaimation mark it says: "Your message was not send. Tap try again to send this message." Any ideas? " and i checked the network settings, and it was on this: Please Register or Log in to view images it seems to be when i turn mobile data on and keep 3g off, i can send texts to anyone, but this will cost me internet browsing money! a fix?