HTC G 1 1 What's the problem if you can't send short messages!

Try another card, preferably one from the same carrier. If it can't be sent, it's a cell phone problem. If you can send it, it's a card problem. If it's a card problem, go to the service desk to reissue it. If it's a machine problem, can you check whether there is a short message service center? If not, you can directly call the operator's customer service and ask them to guide you in setting up.