A
Android Question
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On my Samsung Note 4 I found around 200 .pdf files in my Vault/Download folder. They are all password protected. I did not put them on there. The files are all named page0.pdf, page0(1).pdg, page1.pdf, etc. they all begin with page, then a number. What are these files? They seem to be taking a lot of room for something I don't know about.