When you write with the stylus, the system automatically converts your handwriting into text or display your own handwritten script, you can follow these steps to switch digital text input mode or handwriting mode:
a) Open the Notes app, tap on the "+" icon with your finger in the lower-right corner to create a new note. By default, it is in digital text input mode (the stylus stroke appears blue during writing). After you finish writing and lift the stylus, the input will be displayed as standardized digital text.

In digital text input mode, the device can automatically recognize handwritten punctuation marks.

b) To switch to handwriting mode, tap the stylus toggle button in the lower-left corner. In this mode, the stylus stroke appears black, and handwritten script is displayed as shown below.

c) If you open the Notes app, tap the "+" icon with the stylus in the lower-right corner to create a new note, it is in handwriting mode by default, tap the small keyboard icon in the lower-left corner to switch digital text input mode.