How to set the mobile phone number to only receive short messages and not send them?

Find the number center setting in your mobile phone settings or SMS settings, and then change the number center to 1 1 digit mobile phone number, so that you can only send and receive what you want. If you want to receive and send again, just find the setting and change it back to the number. Remember to change your password several times before. If it doesn't come down several times, you can just find a mobile phone number and see what its number center is.