To address the issue of unwanted text input and cursor movement with your S Pen, consider these potential solutions:
Disable "S Pen to text": Navigate to Settings > Advanced features > S Pen > S Pen to text and turn this feature off.
Check for magnetic interference: Remove any third-party magnetic cases or covers, as magnets can interfere with S Pen functionality, causing erratic behavior or unintended input.
Adjust or replace S Pen tip: If the tip is pushed in too far, damaged, or worn, it can affect pressure sensing and cause unwanted input. Try reinserting the tip or replacing it if necessary.
Check screen protector: Ensure your screen protector is clean, in good condition, and not interfering with S Pen sensitivity, as some protectors can cause inconsistent input.
Disable Stylus Handwriting in Developer Options (if applicable): Some users report finding an option called "Stylus Handwriting" under Input Method in Developer Options which, when disabled, resolved similar issues.
Reset S Pen: If other steps fail, consider resetting the S Pen. Go to Settings > Advanced features > S Pen > Air actions > More options (three vertical dots) > Reset S Pen.
Software Update: Ensure your tablet's software and S Pen firmware are up to date, as updates often include bug fixes and performance improvements.
If the problem persists after trying these steps, consider contacting Samsung Support for further assistance, as it might indicate a hardware issue.