If you're wondering how to block adult websites on your phone permanently, keep watching. If you want to prevent your Android phone from accessing pornographic content, use the save search feature. Open the Android devices settings menu and select the apps and notification option. Now select come from the list of browsers by tapping the default app button. Save browsing may be accessed by clicking the three dots menu in the upper right corner and selecting privacy. If you want to block adult's websites on your iPhone, use your iPhones in built content filters such as screen time, touristy access to pornographic material online. Select screen time from your iPhone settings menu. Toggle screen time to on if it isn't already. Select the option that reads content and privacy restrictions by tapping on it. If you're using for the first time, you can create a password. Choose content and privacy restrictions from the menu. Next, choose web content followed by content restrictions. On the next screen, select limit adult websites. When activated, your phone will prevent access to various adult content websites. In the never allow appeal, you can put the ear else of adult websites you never want to be able to access again.