Samsung note3 mobile phone automatically sends short messages to 1658422, which is garbled and starts with BUB@ and so on. . What should I do? Why?

It is very likely that some free games you downloaded were secretly sent to the mobile, such as defending radish and escaping from the temple. You can download security software to monitor the permissions of applications, and set it as "Ask" in the permission to send short messages. When these applications send short messages, the security software will prompt you to know which applications sent them.

I have a similar situation. Some time ago, after installing a bunch of popular games, I found that the phone bill would be reduced by more than 1 yuan every month (the reason is that I didn't order it at all), and I also detected that I secretly sent this information. Although I am not sure that it has something to do with these applications, Mobile has cooperated with these game manufacturers to make money and free applications? Hehe, the ultimate beneficiary is not us.

if you don't want to use security software, just restore the factory settings.