How to make mobile phones unable to send short messages?

Hello, the best way is to get root permission, so you can delete the system software. If the SMS function of the system is deleted, it will be difficult to send SMS ~ If you want to restore SMS function in the future, just swipe your mobile phone. Other methods, such as calling customer service to turn off the SMS function, are unrealistic, because it is usually a package, including talk time, SMS and traffic, so it is not good to turn off the SMS function alone or turn off the package, even if you turn off the package.