I'm on my 4th replacement S Pen and none of then ever connected , I tried everything sugested , connect it with the phone case off = Fail , Reset S Pen in settings = Fail , retry 10 times = FaIL . Are these pens programed into the phones at inception and no other pen can be programmed? Inquiring minds want to know .
Also, make sure they are official Samsung s-pens. Apparently there are some on Amazon that are NOT official, and do not have Bluetooth, so cannot be connected in this way. I purchased the Mystic Bronze s Pen for my black Note 20 Ultra, and the setup went easy as pie (once I found it at least). Just to make sure, you are resetting it via:
Settings | Advanced features | S Pen | Air Actions | 3 button menu top right | Reset S Pen
Or are you using a different method?
I got mine on amazon via:
Basically always make sure the sold by shows amazon.com. This listing shows different colors, except for green (which used to be there, but they are apparently out), so you can click on a different color if you dont want the copper one that the link is tied to.