Install It If You Want to Try Galaxy S8 Features
If you want to try out one of the Samsung Galaxy S8's new software features you need to have Android 7.0 Nougat installed on your Galaxy S7.
Bixby is the Galaxy S8's new virtual assistant and it's one of the more impressive features on board Samsung's new flagship devices.
Samsung hasn't said if it plans to bring the feature to older Galaxy devices but Galaxy S7 users can try out the Siri competitor right now.
If you don't want to wait for Samsung to bring these changes to the Galaxy S7 in an official update (this isn't confirmed) you might want to download Nougat.