I have a Note 8 which has been fine until a couple of weeks ago when it started to be a pain to type because it would lag or not respond. The only way thay I could ensure it would work was to use the pen. It steadily got worse and the lag of locking up also affected apps. To fix I would have to turn the screen off and on to reset. Over the last couple of days it became even worse and then the notification screen started to randomly drop down while texting and apps opened themselves. I decided to do a factory reset and not load the apps in the event that was the problem. Although it seems better, I am still getting the notification dropdown problem when I type or use the phone. It has happened 3 times while typing this post. Oddly enough over the past couple of days my husband's Note 8 is experiencing the same problem. I think we just recently downloaded the latest update and I have to wonder if that is not part of the problem.
Dear Samsung Member,
Greetings from Samsung Customer Support!
We would like to inform you that as you have tried all the steps, we request you kindly visit the service center as your device needs physical inspection. To check for the nearest Samsung service center kindly click on the link : https://www.samsung.com/in/support/service-center/
Thank you for writing to Samsung.
Samsung Customer Support