I recently purchased a refurbished Samsung Galaxy S8. I have been having a major issue with the navigation bar at the bottom of the screen where it is extremely sensitive and will press the home, back, and tab buttons seemingly at random. I have attempted to adjust the sensitivity of the navigation bar but this does nothing to solve the issue. This occurs even when I am not touching the phone, as it will constantly turn on due to the home button being activating constantly. I have tried cleaning the screen and restarting the phone, and I am sure I have no malicious apps that could be causing this.