I'm a mobile card, and I send text messages automatically when I get a chance. Show "Sending"

It is possible that you have subscribed to any business. Check online whether your mobile phone number has subscribed to any malicious business.

Or a virus. If the mobile phone has a virus, it will sometimes send messages indiscriminately. My friend used to send me inexplicable messages, which were sent by his mobile phone.

The best way is to go to the mobile business hall for consultation in person, which is the best policy!