Why can't I open my downloaded book on my mobile?

[shaliniviji]

please help me why i cant open my download books in my mobile it show it could not opened

please help me why i cant open my download books in my mobile it show it could not opened

 

[belodion]

Re: please help me why i cant open my download books in my mobile it show it could not opened

Welcome.
What app are you using to download these books?