What to do when your Galaxy S21 Ultra does not recognize s pen input on certain screen areas 

Last Update date : Oct 15. 2021

Some users may think an error has occurred if the Galaxy S21 Ultra does not recognize S Pen input and does not respond. Here are some useful tips to the common issues that may arise with S Pen and how to troubleshoot these problems.

Please Note: This guide is designed for Australian variant Galaxy devices, if you have an international device and require further support click here to get in touch with your Samsung Subsidiary. This setting available may vary depending on your Galaxy device and Android OS Version.

Before you try the recommendations below, be sure to check if your device's software and related apps are updated to the latest version. Please check the following steps for how to update your mobile device's software.

Step 1. Go to Settings > Software update.

Step 2. Tap on Download and install.

Step 3. Follow the on-screen instructions.

Check 1. Attached cases or covers with magnetic material to a device

Any third-party cases with magnetic closures or clasps can cause interference with S Pen recognition. If a magnetic case or cover is attached to the device, it is recommended to remove the attached case or cover and try again. 

magnetic meterial

Check 2. S Pen may not work due to a magnetic force

If you use the S Pen in certain affected by magnetic force, the S Pen may not work.

Check 3. Screen protector can cause the S Pen issue

Screen protectors can cause inconsistent motion and pressure when using the S Pen. If the screen protector on your Galaxy S21 Ultra has the following issues, it is recommended to remove the screen protector.

  • Too hard or rubbery surface for writing.
  • An uneven surface, which affects consistency.
  • The thickness of a screen protector can affect the screen sensitivity.
  • A dirty or old screen protector can affect performance.

To learn more about how to use S Pen with Galaxy S21 Ultra, check out the content ‘Enjoy S Pen Writing Experience with Galaxy S21 Ultra’ with Samsung Support.


  • If you use the S Pen at sharp angles anywhere on the screen, the device may not recognize the S Pen actions.
  • Device screenshots and menus may vary depending on the device model and software version.

If you require further assistance, please consult the user manual from our Manuals & Downloads page or contact our Samsung Care Australia experts on 1300 362 603 (Toll Free in Australia). You can also contact our Chat Support team or reach us through Samsung Members Community.

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