Is there any mobile phone that can effectively block the "pornography" of text messages through technological means and protect the physical and mental health of teenagers from the root?

There is a children's mobile phone called OSUNK7, which is the one shown in "The Rice Show", which can completely eliminate the "porn poison" of mobile phones. In student mode, the OSUN K7 mobile phone automatically blocks all incoming calls and text messages except those with Internet access and SIM card numbers, cutting off "pornography" from the source, fundamentally eliminating the harm of "pornography" on mobile phones to teenagers, and protecting the body and mind of teenagers. healthy.