How to change Kindle as default app for pdf files ...
Strange things though: My File Manager + does not show the PDF file in Downloads or Documents, but it's there somewhere (Google Books might file it away, hidden?) and the PDF opens clear, clean, darker text than it did in Kindle. AND, Kindle books under File Manager + shows 4 files, but in Kindle I have only 3 books which has always been the case.
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