For newer Fire OS iterations (4.0 or later), tap the Security menu. Select the Menu icon and enter Fire’s Settings. Anyway, this is how you enable the feature.
That said, it should also work on older Fires running the latest software. This has been tried and tested on the Kindle Fire HD 7, 8, and 10. The first thing to do is enable “Unknown Sources” to allow for the download and installation. The following article will guide you through the installation and set-up process, step by step. On the bright side, there is an option to override this installation lock and this is something you can do even if you’re not tech-savvy. But this involves more actions than you’d expect as the Fire prevents third-party software downloads and installations. Installing WhatsApp or any other messaging app turns your Kindle Fire into a great communication tool.
