I called to check the phone bill today, and then I checked the detailed account online and found that I didn't send a text message. Why does the bill show that I sent it? Expert guidance

Tell you bad news, your mobile phone card may have been cloned by others, which means that calls and messages made by other people's cloned cards are charged on your card. You can try to turn off your cell phone and dial your own number with another phone to see if you can get through. If you get through, change the number quickly!