Galaxy S7 Android 8.0.0 not rooted. From the settings>apps>app permissions menu it shows there are "3 of 8 apps allowed" under SMS permission. When I open the SMS permissions to to identify the apps there are only 2 of 7 possible apps listed as having that permission. When I go to "show system" from the menu it indicates an additional 3 system apps (5 total) of an additional 9 possible system apps (16 total) with SMS permission.