| User agent | Platforms | Browser |
|---|---|---|
| Mozilla/5.0 (Linux; Android 4.4.3; KFAPWI) AppleWebKit/537.36 (KHTML, like Gecko) Silk/81.2.16 like Chrome/81.0.4044.138 Safari/537.36 | Fire OS 4 | Mobile Silk 81 |
| Mozilla/5.0 (Linux; U; Android 6.4.3; en-us; KFAPWI Build/KTU84M) AppleWebKit/537.36 (KHTML, like Gecko) Silk/3.68 like Chrome/39.0.2171.93 Safari/537.36 | Fire OS | Mobile Silk 3 |