Managing your download settings
Go to 
> Settings > Change Download Rules to update your download settings.
Note: These settings aren't available for libbyapp.com users.
Download settings
The download settings control whether titles are downloaded automatically right after you borrow them. You can choose Everything, Titles Under..., or Nothing.
Choose Titles Under... to automatically download smaller titles (usually books) but exclude larger ones (like graphic novels and audiobooks).
Tap the underlined 20 MB to adjust the title size you'd like automatically downloaded. Most books are under 20 MB, many graphic novels and magazines are more than 100 MB, and most audiobooks are more than 300 MB.
"Download Only On Wi-Fi" setting
The "Download Only On Wi-Fi" setting prevents loans from downloading on a cellular data connection.
Watch a short video about managing downloads