Think about whether you have set anything before restarting. If not, call the human service to ask if the SMS signal is normal. If it is normal, only the factory settings can be restored. If the signal moves abnormally, I will call you and ask you to reissue the card in the local business hall, but it is free. Because there is something wrong with their card, my card also had the opposite problem with yours a few days ago, so I can't send text messages. Finally, I went to the mobile business hall to check that the card was a card failure.
I'm happy to answer your question.