Welcome to Vodafone Community
If you are intending to stream to your TV using a firestick, please remember the speed you will recevie from a mobile WiFi device will be limited and you need to be in an area with good 4G data coverage.
Also streaming can be highly data intensive and you would chew through quite a large allowance just streaming one small film in HD.
You would probably be better off using a home broadband connection for your streaming needs.
Please see the link below for help with adding credit to your WiFi device.