To access downloaded books on your mobile, open the Google Play Books app, go to your library, and find the downloaded books listed there, or tap on the book to start reading.

Here's a more detailed breakdown:

Open Google Play Books: Launch the Google Play Books app on your Android phone or tablet.

Navigate to your Library: Tap on the "Library" icon or the "My Library" option.

Locate Downloaded Books: Your downloaded books will be listed in the library section.

Start Reading: Tap on the book you want to read to open it.

Explore Features: You can swipe to flip through pages, tap the center of the page for navigation, or tap "Contents" to jump to a chapter, bookmark, or note.