Whenever I try to open a PDF file it opens with Edge browser and not with Reader . For doing so I have to open Reader and have to locate them manually. Is there any way to open them directly? I have recently upgraded from WP8.1 to W10M and my phone is 535 DS running W10M (14393.693).This problem I face only for (.pdf) format not with others as when I try to open a C language program it gives me a screen to choose the app. See the screenshot
Currently there is now way to choose default apps for file types in windows 10. But in build 14393 it was fixed and now when you are to open a pdf file from File Explorer with Adobe Acrobat Reader installed in your phone, you will see this screen where you can select the Adobe reader to open the pdf file.