On Android. Sometimes I accidentally hit the download book button. Anybody know what that actually does? My phone doesn't notify me of any downloads. The download time is only a couple seconds regardless of how long the book is. I've downloaded the same book repeatedly. I suppose it could be related to offline reading but there's that download time issue that doesn't make it seems like it downloaded a whole book. Can't find any reference to this function in the FAQ stuff.
What does download button do on mobile?