How to read EPUB on mobile
If you have a .epub file and a phone, you already have everything you need. This guide explains how to read EPUB on mobile devices, both Android and iPhone, using free tools.
Every method below handles DRM-free books. The only files no phone can open are DRM-locked purchases from stores such as Kindle or Kobo, which must stay in the store's own app.
The quickest way on any phone: read it in the browser
Both Android and iOS browsers can run EPUB Reader Online, which opens EPUB files without installing an app. It is the simplest choice for a one-off read, a shared phone or a work device with app restrictions.
- Open epubreaderonline.com in Chrome, Safari, Firefox or Samsung Internet.
- Tap Upload EPUB and choose the file from your downloads.
- Read with the table of contents, the on-screen arrows and the text-size buttons. The book is processed on your phone and is never sent anywhere.
Android: Google Play Books and free reader apps
Google Play Books is on most Android phones and can import your own EPUB files. In the app, open the menu, choose Upload files (or go to play.google.com/books/uploads on a computer) and pick the book. It then syncs to every device signed in to your Google account.
If you prefer a dedicated reader, free Android apps such as ReadEra, Moon+ Reader and Lithium scan your storage for EPUB files automatically. They add custom fonts, page-turn animations, night themes and text-to-speech.
Tapping an EPUB in the Files or Downloads app usually offers a list of installed apps that can open it. Choose one and optionally tick Always so future books open there directly.
iPhone and iPad: Apple Books
On iOS, Apple Books is built in and reads EPUB natively. Tap the file in the Files app, or use the Share sheet and choose Books. The book joins your library and syncs through iCloud.
For the full walkthrough and alternatives, see how to read EPUB on iPhone.
Kindle and Kobo apps
The Kindle app does not open EPUB files directly. Amazon's free Send to Kindle service converts EPUBs and delivers them to the app and to Kindle devices. Use the Send to Kindle website or share the file to the Kindle app from your phone.
The Kobo app reads EPUB on Kobo e-readers, but on phones its import support is limited. For mobile reading, Play Books, Apple Books or a browser reader is more reliable.
Tips for comfortable reading on a small screen
- Turn on the reader's dark or sepia theme at night to reduce glare.
- Increase the font size one step beyond what feels natural; it reduces eye strain on long sessions.
- Lock screen rotation so the page does not flip when you lie down.
- Most readers, including the browser option above, remember your position per book, so you can switch between titles without losing your place.
Frequently asked questions
Can I read an EPUB on my phone without downloading an app?
Yes. Open epubreaderonline.com in your phone's browser, tap Upload EPUB and pick the file. It works on Android and iPhone and the book never leaves your device.
What is the best free EPUB reader for Android?
Google Play Books is already installed on most phones and syncs across devices. ReadEra, Moon+ Reader and Lithium are popular free alternatives with more customisation.
Why will my EPUB not open on my phone?
Most often the file is DRM-protected, which no third-party reader can open. Less often the download was incomplete; try downloading it again or opening it in a browser reader to check whether the file itself is valid.