New with Android 12 is a shortcut to the Samsung Members Diagnostics Center. They have made it easier to find the area just within settings.
Samsung Diagnostics is meant to help aid the user in finding out what may be causing a certain issue by checking the hardware and what may be at fault.
Notification shade, icon is located on top right
Battery and device care is the icon of 2 circles and a clockwise arrow
Very last option
Samsung Diagnostics Center
Pull down the notification area and tap the Settings Icon
Once you tap the icon, locate 'Battery and device care'
Inside device care scroll to the bottom, there is a Diagnostics setting at the bottom
Once there, you'll know you have done correctly when you have seen this screen
