I would like to install a filter onto my kyocera duraxv extreme that will block installing new apps (but won't block uninstalling apps like adb does), and will filter the content of some appps which have built in browsers. The problem is that even though the filter has device admin permission, you can still easily disable it in settings. On other phones that I've seen, the filter blocks you from disabling it once you give it device admin permission, but for some reason, its not blocked on the duraxv extreme. Does anybody know why this is, and if there's any way of blocking access to device admin permissions in settings?