How to get rid of the paid MMS and SMS functions that come with those mobile phones?

1. Changing the number of SMS center to empty or wrong can solve the problem of SMS charging, but there is a problem that you can't send messages, and you must change it to the correct number to send them.

2. Modify some properties of mobile Internet access, so that mobile phones can't access the Internet. If you don't turn on the internet function, just use the first one.

Many cottage phones have this situation. Of course, some domestic mobile phones also have this trap, so consider it more when buying a mobile phone. It's best not to show it to friends alone.