A MOBI file is an eBook file format developed by Mobipocket, which was later acquired by Amazon. MOBI files are primarily used for eBooks and are compatible with various devices, including Amazon Kindle e-readers and Kindle apps.

To open a MOBI file, you have several options:

  1. Amazon Kindle devices: MOBI files are natively supported by Kindle e-readers, such as Kindle Paperwhite, Kindle Oasis, and Kindle Voyage. Simply transfer the MOBI file to your Kindle device using USB or send it to your Kindle email address to have it delivered wirelessly.
  2. Kindle reading apps: Amazon provides free Kindle reading apps for various platforms, including Windows, macOS, iOS, Android, and more. Install the appropriate Kindle app for your device, sign in with your Amazon account, and you can open and read MOBI files within the app. You can transfer MOBI files to the app through USB or email them to your Kindle email address.
  3. E-book management software: There are several e-book management applications that support MOBI files. Calibre is a popular choice, which allows you to organize, convert, and read e-books in various formats, including MOBI. You can download Calibre from its official website, import your MOBI file into the library, and read it within the application.
  4. MOBI file reader apps: There are also dedicated MOBI reader apps available for mobile devices and desktops. Examples include FBReader, Cool Reader, and Icecream Ebook Reader. These apps specialize in opening and reading various e-book formats, including MOBI.
  5. Online e-book readers: Some websites offer online e-book reading services that support MOBI files. You can upload your MOBI file to these platforms and read it directly in your web browser.

It’s worth noting that while MOBI is a widely supported format, the newer Amazon Kindle devices and apps also support the more modern ePub format. If you have an ePub file, it’s often preferable to convert it to MOBI or use the ePub directly on Kindle devices or apps.

Remember to respect copyright laws when opening and reading MOBI files, ensuring that you have the necessary rights to access and view the content within the file.