According to the reply to my comment in Google Play Store, I am opening this thread.
In specific PDF files, no text are displayed in the Acrobat DC for Android. I have the latest non-beta version. And this is exists in all previous versions of Acrobat for Mobile. Other 3rd party readers can display the text btw.
The files that I am mentioning are my credit card bill statement.
If a person provide me a private way I can share this file for testing.
We have received the problematic PDF. We will examine the document and try to determine the problem.
Adobe Acrobat Reader Team