Download epub or pdf e-books on the computer. There are many e-books in Baidu. Then upload them with itunes, connect the iPhone with the computer with a data cable, select View Book Classification on the left side of iTunes, and drag the PDF or ePub e-books you want to import to this blank area. iTunes will automatically load e-books. Finally, click the application in the lower right corner of iTunes and wait for iTunes to synchronize.
You can see the book you just imported on the shelf of ibooks ~ ~ ~
Of course, there are many reading softwares in the appstore, such as 9 1 Panda Reading, Palm Reading, QQ Reading, and countless books. Everything is fine. You can download books in the software.