Why didn't I send a message to Unicom, but I automatically sent a message? It's CXLL

If the mobile phone sends text messages automatically, you can do the test of changing the phone and card, and try putting the mobile phone card in another mobile phone. If other mobile phones don't happen, it's usually a mobile phone problem. It is possible that there is a virus in the mobile phone or that the mobile phone has downloaded some software to send text messages automatically. You can consult the after-sales service of mobile phones. If this is not the case, there is something wrong with the mobile phone card. It may be a data problem, or it may be a problem with the mobile phone card itself. You can consult customer service, check the data after passing or go to the local business hall to test the mobile phone card.