Hello, can anybody help me? My Spotify App on my IPHONE SE always change to a device named "KFFOWI"?. Device detection for developers ! We help developers detect and work with tens of thousands of devices, and millions of device combinations. Compute Performance of Amazon Kindle Fire (5th Gen, KFFOWI). Had a friend ping me about a mysterious network device popping up for about 20 seconds in Windows 10 network gui. What is a kffowi device? KFFoWI is just the model number name for the Amazon Fire Tablet, if you look into the properties of the kffowi device,.