It has functionality. For example, you can use it as a remote for taking pictures and videos, or if you're using Samsung notes it can be used to toggle between the eraser and different pens (just to name a few things) go to advanced features in your settings app and hit "S Pen" if you tap "air actions" it'll show you the different actions you can do or if you scroll down on the spen page there will be "tips for using your spen"
@Anonymous It is an aid in removing the S Pen from the S22. If that bit didn't click out, you wouldn't be able to remove the S Pen.
[Edit] I originally thought you meant the button on the end of S Pen. Are you referring to the button built into the S Pen about 2/3 of the way down? That is certainly functional. You can find many of the functions mentioned in phone settings -> Advanced -> S Pen
It has functionality. For example, you can use it as a remote for taking pictures and videos, or if you're using Samsung notes it can be used to toggle between the eraser and different pens (just to name a few things) go to advanced features in your settings app and hit "S Pen" if you tap "air actions" it'll show you the different actions you can do or if you scroll down on the spen page there will be "tips for using your spen"
