EPUB files can be read on most smartphones and tablets, including iPhone, iPad, Amazon Kindle, and Android devices.
These files can also be read on laptop and desktop computers using a variety of free applications. Those on Apple computers can use their built-in Apple Books. PC users can find an application by searching the Microsoft Store (see Microsoft's recommended reading applications).
Use Amazon's Send to Kindle tool to send your EPUB to your Kindle Device: https://www.amazon.com/gp/sendtokindle
If you have a different device than one listed here, please check with the manufacturer to ensure it can read EPUB files.