Organizing pdf pages acrobat

If I undrerstood this question correctly, I don't think  the mobile app provides a capability to auto-arrange pages. But you can use the "Organize Pages" tool in your mobile app, which will will open up the PDF document in thumbnail view.

While in thumbnail view, you can manually long-press on a desired page page, and be able to drag and release it  in a new position. The pages number(s) will (or should ) adjust accordingly when you make these changes.

As far as I'm concerned, this feature works great while you're on the go and have to work with only a few pages at a time. For a PDF with anything more than 15 pages long I think it too convenient since I personally haven't discovered how to select more than one page and how to  drag them together to another position.