You can use an MDM solution/Apple Configurator. I do this so (among other things) my iPhone connects to my home network and won't connect to my young friend's

You can use an MDM solution/Apple Configurator. I do this so (among other things) my iPhone connects to my home network and won't connect to my young friend's wifi "pineapple" or even suggest it's an option when he thinks I haven't turned peoples internets upside down over twenty years ago...