If you are opening the PDF in Adone Acrobat Reader application, you can use the Share icon to save the PDF to Google Drvie or OneDrive.
Open the PDF and click on Share icon provided at the top right corner on the screen.
Then click on the Share a copy button provided at the bottom of the screen. Now select OneDrive or Google Drive from the list of the options appears.
Please ensure that both the applications are installed on the device.
If you still experience the issue, share t...