How to Change Default PDF Viewer on OPPO Phone
Are you having trouble opening PDF files on your OPPO phone? Or are you looking to switch to a different PDF viewer for your Android device? If that sounds like you, then you have come to the right place! This article will assist you on how to change the default PDF viewer on your OPPO phone.
Change your default PDF viewer
For ColorOS 7 and above: Go to your OPPO phone's [File Manager] > [Documents] > Select the PDF file that you want to view > Choose an application you want to use as a default PDF viewer > Enable [Don't ask again].
Note: If you want to reset your default PDF viewer, go to your OPPO smartphone's [Settings] > [App management] > [App list] > Look for the application you chose as a default PDF file viewer > [Open by default] > [Clear defaults].For ColorOS 6.0 to 6.1: Go to your OPPO phone's [Settings] >[App Management] > [Default App] > Tap on the [PDF File] > Choose your preferred application > Tap [Change PDF file] to confirm.
For ColorOS 5.2: Go to your OPPO phone's [Settings] > [App Management] > [Default App] > Tap on the [PDF File] > Choose your preferred application.
ForColorOS 3.0: Go to [Settings] > [App Management] > [Default App] > [PDF file] and tap the preferred PDF file viewer to set as default. Tap [Change PDF file] to confirm.
In some devices: You may need to go to [Settings] > [Additional Settings] > [App Management] > [Default App] > [PDF file].
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* Pictures, settings, and paths might differ from those of your phone, but these won't affect the description in this article.