Just a few handy things I find really useful that others may not know.
With the s pen you can take it out of the phone while it's locked and your lock screen becomes a blank canvas, you can immediately write any note on or reminder using the pen and as soon as you put the pen back in it saves it to your notes.
Very swift and on the fly feature and with the s pen becoming more advanced now its like writing on a note pad.
Pin to screen / my favourite most under rated feature.
In the side panel there is a pin /insert option, you can use the rectangle to highlight any part of your screen and pin it.
The beauty of the way Samsung do it is you can close whatever you want and it still stays on the screen, so if you want to make a phone call and have some utility bill information on the screen for instance or invoice etc so you can quickly read from it while on a call its very useful.
Astrophotography mode / didn't know this but in the camera settings if you go to more then look for expert raw mode, if you press that it then installs an additional Samsung raw camera app mode, within that is an astrophotography feature that you can then access via the normal camera app if you add expert raw mode to your quick access section.
These are possibly on other Samsung models too but can't be for sure.
Thanks