1. Go to the main menu sidebar from the homepage.
2. Tap on “Document” and you will see the file manager page.
3. Tap and hold on the PDF file you want to remove for 2 seconds and it will be selected.
4. Tap on the "More" icon button (shown as three vertical dots) in the top right corner and tap "Move."
5. Then click into the target folder and tap "Move".
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