Samsung G600 Text error?

All night I've been sending my friends texts then suddenly just now it goes error everytime I try to send them. I haven't ran out of money. How do I solve this?

---

› See More: Samsung G600 Text error?

Check your outbox in the phones messaging center. If there are any in there, delete the first couple of messages and try sending them again.
I've had phones where if a message fails to send, it will sit in the outbox and prevent further messages from being sent.