Today I sideloaded TubiTV to my Smasung smartTV, if you live in a country where TubiTV is available you don´t need to do any of this, the instructions are only for people being geoblocked by TubiTV, as a side note, this should work for many other apps like LiveOne.
I will describe my hardaware because depending on hardware things might change, I am using a Samsung smartTV with an Android TV box, brand “Strong”, based in Austria but owned by a Chinese conglomerate, they are not one of the cheapest Android set up boxes out there but you know it won´t come loaded with malware as it is a well known brand within the Android set up boxes community, and more important, it runs Android 11, which makes it harder to install unauthorized software.

You will need an Android phone too, these are the instructions to sideload TubiTV to your smart TV.
- Download the app SendFilesToTV from the official Google play store to your smartphone and to your smartTV, the app must be installed in both devices.
- With your phone go to the alternative Google playstore UpToDown and download any app, for example TubiTV, this will be a .apk file.
- In your smartphone click on the Send Files To TV app, click the button that says “Send” browse your .apk file downloaded from UpToDown and select sending it to your set up Android box which will show up in the destination if you are in the same Wi-fi network, this only works if your smartphone and the Android set up box are both in the same network.
- Go to your smart TV open the Send Files to TV app, click on Receive and you will see the .apk file, click on it and pick install, you will be prompted to change one security setting to be able to install it, the instructions are very clear, read the screen and change the setting UpToDown tells you, after this you will have UpToDown installed in your smartTV.
- Open the alternative Google PlayStore you just installed in your smartTV, go to media and you will find TubiTV and thousands of other apps, now you can pick any app you want and install it without having to use any work around.
For security uninstall SendFilesToTV after leaving a review to the developer if everything has worked for you, the app is free at the very least you could leave a review right? You can use other alternative Google play stores like ApkMirror, a Chinese company but my favourite store is UpToDown for no other reason that I don´t trust the Chinese government when it comes to privacy and security.
Needless to say that you will still need a VPN to watch TubiTV, you can try WindScribe for free without payment asked and see if it works for you, they support streaming, or pick your own VPN. English speaking countries where TubiTV is known to work: United States, Canada, Australia, United Kingdom.