You should be able to connect a streaming device to the hotspot on a phone. Be aware that when viewing anything it will use up a fair amount of bandwidth that can get costly if you don't have a phone account with unlimited data.
You've already got a tv with Roku built in - THAT should connect to a hotspot too.
Roku Community Streaming Expert I am not a Roku employee, only a user like you. Streaming Stick+ 3810 | TCL Roku TV 43S245/C107X | Streaming Stick 3600
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