Mobile phones often send English text messages themselves for no reason.

This situation shows that your mobile phone should be a cottage phone. When assembling the mobile phone, the manufacturer reached an agreement with some similar companies to install these programs in the mobile phone you use, and he will automatically send text messages from time to time, just like your situation. There is a charge for this information.

I also learned about it by watching TV. There are two ways to deal with this situation. First of all, you can check whether there is a contact number in the short message you receive. If so, contact the company to close this service.

Second, call 10086 to ask or find the manufacturer who bought the mobile phone and ask him to help you close this service.

I learned it by watching TV occasionally, but I can't remember it clearly. I hope it helps you!