How to turn off SMS reminders on Apple phones?

Your mobile phone number is mobile, right? This is a free service to detect harassing numbers in mobile phone numbers. There are too many harassing calls now, but marking such numbers as harassing numbers in many security software can't stop them from calling again. Now the three major operators are improving the problem of harassing calls and have all withdrawn from this reminder function. At the same time, they can also report in the APP, and mobile will turn off the calling function of this number.