I've read up on this issue with the note 9 but just wondering if anyone is experiencing a seasons when writing notes with the s-pen. I've seen people say it could be the case. I bought the clear case by casemate from att. I also have a nuckee attached of which I've repositioned before using a credit card to unlatch it. Now I mention this because some posts say that cases or accessories with magnetic elements could cause the dead zone. My dead zone is right in the middle where the nuckee is attached. With the case off there is no dead zone. So it is my case, my nuckee (cheaper popsocket) or did the use if the credit card affect it? Thanks!
Pop sockets use adhesion to stick to phones, not magnetism. I have one on my N10+, and have no issues with several S Pens.
Also, the S Pen relies on resonance. Using cases with magnets probably interferes with the EM field.