Latest Mobile Silk 76 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; Android 7.1.2; KFMUWI) AppleWebKit/537.36 (KHTML, like Gecko) Silk/76.3.6 like Chrome/76.0.3809.132 Safari/537.36 Fire OS 6 Fire 7" (2019)
Mozilla/5.0 (Linux; Android 7.1.2; KFKAWI) AppleWebKit/537.36 (KHTML, like Gecko) Silk/76.3.6 like Chrome/76.0.3809.132 Safari/537.36 Fire OS 6 Fire HD 8 (2018)
Mozilla/5.0 (Linux; Android 7.1.2; KFKAWI) AppleWebKit/537.36 (KHTML, like Gecko) Silk/76.2.1 like Chrome/76.0.3809.111 Safari/537.36 Fire OS 6 Fire HD 8 (2018)
Mozilla/5.0 (Linux; Android 5.1.1; KFTBWI) AppleWebKit/537.36 (KHTML, like Gecko) Silk/76.3.6 like Chrome/76.0.3809.132 Safari/537.36 Fire OS 5 Fire HD 10
Mozilla/5.0 (Linux; Android 5.1.1; KFTBWI) AppleWebKit/537.36 (KHTML, like Gecko) Silk/76.2.1 like Chrome/76.0.3809.111 Safari/537.36 Fire OS 5 Fire HD 10
Mozilla/5.0 (Linux; Android 5.1.1; KFSUWI) AppleWebKit/537.36 (KHTML, like Gecko) Silk/76.3.6 like Chrome/76.0.3809.132 Safari/537.36 Fire OS 5 Fire HD 10 (2017)
Mozilla/5.0 (Linux; Android 5.1.1; KFSUWI) AppleWebKit/537.36 (KHTML, like Gecko) Silk/76.2.1 like Chrome/76.0.3809.111 Safari/537.36 Fire OS 5 Fire HD 10 (2017)
Mozilla/5.0 (Linux; Android 5.1.1; KFMEWI) AppleWebKit/537.36 (KHTML, like Gecko) Silk/76.3.6 like Chrome/76.0.3809.132 Safari/537.36 Fire OS 5 Fire HD 8 (2015)
Mozilla/5.0 (Linux; Android 5.1.1; KFMEWI) AppleWebKit/537.36 (KHTML, like Gecko) Silk/76.2.1 like Chrome/76.0.3809.111 Safari/537.36 Fire OS 5 Fire HD 8 (2015)
Mozilla/5.0 (Linux; Android 5.1.1; KFGIWI) AppleWebKit/537.36 (KHTML, like Gecko) Silk/76.3.6 like Chrome/76.0.3809.132 Safari/537.36 Fire OS 5 Fire HD 8 (2016)
Mozilla/5.0 (Linux; Android 5.1.1; KFGIWI) AppleWebKit/537.36 (KHTML, like Gecko) Silk/76.2.1 like Chrome/76.0.3809.111 Safari/537.36 Fire OS 5 Fire HD 8 (2016)
Mozilla/5.0 (Linux; Android 5.1.1; KFFOWI) AppleWebKit/537.36 (KHTML, like Gecko) Silk/76.3.6 like Chrome/76.0.3809.132 Safari/537.36 Fire OS 5 Fire 7"
Mozilla/5.0 (Linux; Android 5.1.1; KFFOWI) AppleWebKit/537.36 (KHTML, like Gecko) Silk/76.2.1 like Chrome/76.0.3809.111 Safari/537.36 Fire OS 5 Fire 7"
Mozilla/5.0 (Linux; Android 5.1.1; KFDOWI) AppleWebKit/537.36 (KHTML, like Gecko) Silk/76.3.6 like Chrome/76.0.3809.132 Safari/537.36 Fire OS 5 Fire HD 8 (2017)
Mozilla/5.0 (Linux; Android 5.1.1; KFDOWI) AppleWebKit/537.36 (KHTML, like Gecko) Silk/76.2.1 like Chrome/76.0.3809.111 Safari/537.36 Fire OS 5 Fire HD 8 (2017)
Mozilla/5.0 (Linux; Android 5.1.1; KFAUWI) AppleWebKit/537.36 (KHTML, like Gecko) Silk/76.3.6 like Chrome/76.0.3809.132 Safari/537.36 Fire OS 5 Fire HD 7 (2017)
Mozilla/5.0 (Linux; Android 5.1.1; KFAUWI) AppleWebKit/537.36 (KHTML, like Gecko) Silk/76.2.1 like Chrome/76.0.3809.111 Safari/537.36 Fire OS 5 Fire HD 7 (2017)
Mozilla/5.0 (Linux; Android 5.1.1; KFASWI) AppleWebKit/537.36 (KHTML, like Gecko) Silk/76.3.6 like Chrome/76.0.3809.132 Safari/537.36 Fire OS 5 Fire HD 7
Mozilla/5.0 (Linux; Android 5.1.1; KFASWI) AppleWebKit/537.36 (KHTML, like Gecko) Silk/76.2.1 like Chrome/76.0.3809.111 Safari/537.36 Fire OS 5 Fire HD 7
Mozilla/5.0 (Linux; Android 5.1.1; KFARWI) AppleWebKit/537.36 (KHTML, like Gecko) Silk/76.3.6 like Chrome/76.0.3809.132 Safari/537.36 Fire OS 5 Fire HD 6