On the Kindle Android app and Fire tablets: Go to Settings > Device Options > Advanced Options > Whispersync for Books > Enable. Meanwhile, you can also update your purchased kindle books to the latest version. You can also check the 'Whispersync for Books' settings on your Kindles. Once activated we can go to the furthest page as well as any bookmarks, highlights and notes. This means you don't have to do anything to get it up and running on your Kindles. And 'Whispersync for Books' is enabled on Kindle Fire, Kindle devices and apps by default.

This setting will help sync our books automatically. Set ' Whispersync Device Synchronization' to ON under Device Synchronization (Whispersync Settings). Visit Amazon official site and log in with your own kindle account, then go to 'Manage Your Content and Devices' and select the 'Settings' tab. To keep our kindle library in sync, we must turn the ''whispersync for books' service on. How to Turn on Whispersync Settings for Kindle Step 1: Enable Whispersync Device Synchronization on Amazon account. The official guide to sync non-amazon books across Kindle devics and apps How to turn on whispersync settings for Kindle

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