The Galaxy S21 Ultra supports the S Pen stylus, so you can draw and write on the screen. We tried it out and while it's good, it's no Note challenger.
Samsung S-Pen Troubleshooting - Everything You Should Know
Leak] Samsung Galaxy S21 Ultra Will Support S Pen, But It Is Not Included in the Box
Galaxy S21 Ultra Pen Replacement for Samsung Galaxy S21 Ultra 5G Touch Stylus S Pen +Replacement Tips/Nibs (Black) : Electronics
S Pen is not charging on my Galaxy phone or tablet
Samsung Galaxy S21 first impressions: Did we need another S Pen? - SoyaCincau
Samsung's One Step Away From Admitting No One Wants an S Pen
Reasons why Galaxy Note 9 users should buy or skip the Galaxy S21 Ultra - SamMobile
The Galaxy S21 Ultra Can Use an S Pen, But it's Not a Note
Enjoy S Pen Writing Experience with Galaxy S21 Ultra
The Galaxy S21 Ultra Can Use an S Pen, But it's Not a Note
Samsung S21 will work with the S Pen, but won't replace your Note yet
Samsung Galaxy S21 Ultra vs. Galaxy Note 20 Ultra: Which phone is best for you?
A-creator Galaxy S21 Ultra Silicone Case with S Pen Replacement for Samsung Galaxy S21 Ultra 5G (Black) : Cell Phones & Accessories