I had the problem where hovering would interact with the screen as if I was touching it. I saw online that flicking it repeatedly could be a fix, but that didn't work. I put it in a bottle of rubbing alcohol and shook it for a bit then let it sit. Make sure to turn off the s pen by clicking it until it disconnects from your phone before putting it in the rubbing alcohol. After taking it out I put in under a hair dryer for a bit. At first it didn't work, so I kept flicking it and throwing it at my dresser. It didn't work, so I put it in my phone and left it for a day then I took it out and it worked fine. I don't know what did it.
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SOLUTION? Go to 2nd paragraph for solution. The first one is how I thought I broke it.
I had the same problem. I used it in the shower, I got shampoo on it so that I wouldn't get shampoo or water on my phone screen. I rinsed it off and when I got out of the shower it started randomly pausing and playing my YouTube video when it was in my in my phone. I thought I had water damaged it or something, so I did the obvious (obvious to a tech enthusiast). I used rubbing alcohol to hope to vaporize any water left in the pen. What I failed to do was turn it off because there is no off button for the s pen. After doing that I realized my mistake and realized I could have just ran the capacitor (battery) down by pressing the button 200 times. After I did the rubbing alcohol it would not connect to my phone wirelessly. It still worked as if the "S pen remote" option was off. I did try restarting the phone with the s pen out of the phone, but it didn't work.
I switched my mom's pen with my own and both worked fine. So I switched them back and they both worked fine. I know not everyone has another Note 9 available but for now stores will have them on display, so you could try that or ask their desk person of you can try that. I'm thinking of Best Buy because they have the display and the geek squad/ nerd herd (Yes a Chuck reference it i s a great show).
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