The Books app on your Amazon Fire phone is an excellent portal for browsing, purchasing, reading, and organizing books.
Whispersync offers a great way for you to keep your place while reading books across multiple devices, but in one circumstance, you may want to consider de-synchronizing your devices: if you and a family member are reading the same book, using different devices on the same account. You start and stop at different locations, so syncing to the furthest page won“t work for everyone. This could also be an issue in a classroom setting where multiple students are reading the same book on the same account. If you need to turn off Whispersync, you can go to Amazon.com to manage your device settings and switch Device Synchronization to OFF.