does vpn cover firestick and tablet

The built-in VPN in desktop Firefox and more recently in Firefox for Android only works in the Firefox web browser. It routes browser traffic through proxy servers. https://support.mozilla.org/en-US/kb/built-in-vpn https://support.mozilla.org/en-US/kb/mobile-android-vpn You need a VPN app as it will cover the whole device as Mozilla has the subscription based Mozilla VPN https://vpn.mozilla.org However this is only available for Windows 10, 11 (64-bit), MacOS 10.13 or later, Linux and on iOS/iPadOS and Android. There is no version for Amazon tablets or Fire sticks.