Inexplicably, SMS charges appear. This machine doesn't send text messages to anyone. How can it send messages to others? If it's not my operation, can the SMS fee not be returned?

Several situations: At present, some cottage phones on the market are very cheap, but the software is hidden inside. After inserting the card, they will continue to send paid text messages. In some cases, you only waste a few dollars a month but keep deducting them. In other cases, it costs hundreds of dollars to make some expensive service calls each time. It is also possible that the mobile phone is infected with a virus due to imperfect security measures when surfing the Internet or connecting to a computer. Some viruses will steal your address book, text messages and other information, and will control your mobile phone to spread illegal or bad information or malicious advertisements to friends. It is also possible that you have been hacked into your mobile phone by some experts with Bluetooth. You just need to pay attention to turning off Bluetooth at any time. If you want to inquire, you can call 10086. There is a phone bill inquiry in the phone bill inquiry option. You can choose to receive short messages or listen to the computer online to tell you. Then ask the attendant of the human service. I hope I can help you.