How can I change the default Google Drive PDF viewer on Android? I've been used to downloading PDFs on my phone and have them directly saved on my downloads folder. But just recently, whenever I download PDFs, Google Drive viewer shows up. I know there's a download option on Google Drive viewer. But when I open the file, it prompts that there's no app that can read it. I have Acrobat and Drive that I used to read PDFs with.

I think from some of the research I did, the update for Google Drive makes it the default for opening PDFs. I checked the defaults, it did not have one. I just uninstalled the update for Google Drive as a temporary solution.

I think I changed the defaults by accident (I did not assign one before). How do I change that, if ever?

My phone's a Samsung S5. I'm using Chrome for it.
I had the same problem using Firefox on Android - totally maddening - but fixed it.

After installing Google Drive all my links to pdfs would open with Google Drive PDF Viewer.

I fixed it by, in Firefox, going to about:config in the location bar, then finding "browser.download.preferred.application/pdf" and doing a Reset there.

The next time I clicked on a link to a pdf I got the choice to Download, or use Google Drive PDF Viewer.

Shouldn't it be there in Chrome, under the hood somewhere ?

Btw, that "browser.download.preferred.application/pdf" in Firefox only seems to show up after a choice has been made, in this case, forced by the install of Google Drive. Seems redolent of the old browsers wars.