PDF files can not be read on iPhone, iPad, Sony, Samsung and other devices, but if you can save them as .epub files you can read them freely. Here I will show you how to turn PDF eBooks into epub files to enjoy on any devices.
Wondershare PDF Converter
> Turn PDF eBooks into Word, Excel, EPUB, images and iWork Pages
> Save Word, Excel, PowerPoint, Text files and more as PDF format
> Support converting encrypted & image based PDF eBooks
> Read PDF eBooks on iPad, iPhone, Sony, Samsung and more