Latest Mobile Silk 84 user agents:

User Agent Platform Device
Mozilla/5.0(Linux;Android5.1.1;KFSUWI)AppleWebKit/537.36(KHTML,likeGecko)Silk/84.3.5likeChrome/84.0.4147.125Safari/537.36 Fire OS Fire HD 10 (2017)
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Silk/84.3.5 like Chrome/84.0.4147.125 Safari/537.36 GNU/Linux Unknown
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Silk/84.1.153 like Chrome/84.0.4147.111 Safari/537.36 GNU/Linux Unknown
Mozilla/5.0 (Linux; Android 9; KFTRWI) AppleWebKit/537.36 (KHTML, like Gecko) Silk/84.3.5 like Chrome/84.0.4147.125 Safari/537.36 Fire OS 7 Fire HD 10 (2021)
Mozilla/5.0 (Linux; Android 9; KFTRPWI) AppleWebKit/537.36 (KHTML, like Gecko) Silk/84.3.5 like Chrome/84.0.4147.125 Safari/537.36 Fire OS 7 Fire HD 10 Plus (2021)
Mozilla/5.0 (Linux; Android 9; KFONWI) AppleWebKit/537.36 (KHTML, like Gecko) Silk/84.3.5 like Chrome/84.0.4147.125 Safari/537.36 Fire OS 7 Fire HD 8 (2020)
Mozilla/5.0 (Linux; Android 9; KFONWI) AppleWebKit/537.36 (KHTML, like Gecko) Silk/84.1.153 like Chrome/84.0.4147.111 Safari/537.36 Fire OS 7 Fire HD 8 (2020)
Mozilla/5.0 (Linux; Android 9; KFMUWI) AppleWebKit/537.36 (KHTML, like Gecko) Silk/84.3.5 like Chrome/84.0.4147.125 Safari/537.36 Fire OS 7 Fire 7" (2019)
Mozilla/5.0 (Linux; Android 9; KFMUWI) AppleWebKit/537.36 (KHTML, like Gecko) Silk/84.1.153 like Chrome/84.0.4147.111 Safari/537.36 Fire OS 7 Fire 7" (2019)
Mozilla/5.0 (Linux; Android 9; KFMAWI) AppleWebKit/537.36 (KHTML, like Gecko) Silk/84.3.5 like Chrome/84.0.4147.125 Safari/537.36 Fire OS 7 Fire HD 10 (2019)
Mozilla/5.0 (Linux; Android 9; KFMAWI) AppleWebKit/537.36 (KHTML, like Gecko) Silk/84.1.153 like Chrome/84.0.4147.111 Safari/537.36 Fire OS 7 Fire HD 10 (2019)
Mozilla/5.0 (Linux; Android 9; KFKAWI) AppleWebKit/537.36 (KHTML, like Gecko) Silk/84.3.5 like Chrome/84.0.4147.125 Safari/537.36 Fire OS 7 Fire HD 8 (2018)
Mozilla/5.0 (Linux; Android 9; KFKAWI) AppleWebKit/537.36 (KHTML, like Gecko) Silk/84.1.153 like Chrome/84.0.4147.111 Safari/537.36 Fire OS 7 Fire HD 8 (2018)
Mozilla/5.0 (Linux; Android 9; KFGIWI) AppleWebKit/537.36 (KHTML, like Gecko) Silk/84.3.5 like Chrome/84.0.4147.125 Safari/537.36 Fire OS 7 Fire HD 8 (2016)
Mozilla/5.0 (Linux; Android 9; KFGIWI) AppleWebKit/537.36 (KHTML, like Gecko) Silk/84.1.153 like Chrome/84.0.4147.111 Safari/537.36 Fire OS 7 Fire HD 8 (2016)
Mozilla/5.0 (Linux; Android 9; AFTDCT31) AppleWebKit/537.36 (KHTML, like Gecko) Silk/84.3.5 like Chrome/84.0.4147.125 Safari/537.36 Fire OS 7 4K UHD (2020)
Mozilla/5.0 (Linux; Android 7.1.2; KFMUWI) AppleWebKit/537.36 (KHTML, like Gecko) Silk/84.3.5 like Chrome/84.0.4147.125 Safari/537.36 Fire OS 6 Fire 7" (2019)
Mozilla/5.0 (Linux; Android 7.1.2; KFMUWI) AppleWebKit/537.36 (KHTML, like Gecko) Silk/84.1.153 like Chrome/84.0.4147.111 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/84.1.153 like Chrome/84.0.4147.111 Safari/537.36 Fire OS 6 Fire HD 8 (2018)
Mozilla/5.0 (Linux; Android 7.1.2; AFTN) AppleWebKit/537.36 (KHTML, like Gecko) Silk/84.2.3 like Chrome/84.0.4147.111 Safari/537.36 Fire OS 6 Fire TV (Gen 3)