How can I simply copy/paste a formatted text from another app into a PDF?

Hi there

Hope you are doing well and thanks for reaching out.

++ Adding to the discussion, please try the steps as below and see if that helps:

1. Copy the Text:

• Open the app where your formatted text is.

• Select the text you'd like to copy, and tap Copy.

2. Open the PDF in Adobe Acrobat:

• Launch the Adobe Acrobat app on your mobile device.

• Open the PDF you want to paste the text into.

3. Enter Edit Mode:

• Tap the Edit (pencil) icon from the bottom toolbar.

• Choose Edit PDF (available with a subscription).

4. Paste the Text:

• Tap where you want to insert the text.

• Long-press in that area and tap Paste.

Also please go through the help article https://adobe.ly/4ihSfQY for more information.