Using Hotspot with smart tv

Please see the pic below to make it clearer that Hotspot is enabled by a Carrier on one SIM and not by the other Carrier in the same iPhone (Dual SIM).

Use these steps first

Restart the iPhone or iPad that provides Personal Hotspot and the other device that needs to connect to Personal Hotspot. Make sure that you have the latest version of iOS. On the iPhone or iPad that provides Personal Hotspot, go to Settings > General > Reset, then tap Reset Network Settings.

If Personal Hotspot is not working on your iPhone or iPad (Wi-Fi

Also, check the following

1. Network coverage and stability
2. Data Balance
3. On your windows (See if WiFi Auto Joins is enabled)
4. Also, check if you have any stronger WiFi signal around your computer.

Ask the Carrier to change the SIM if nothing works.

If your TV does not have an option for using mobile data, it means that it lacks the necessary built-in functionality to directly connect to the internet using cellular data. As a result, you may encounter limitations when attempting to utilize the hotspot feature from your iPhone.

The hotspot feature on an iPhone allows you to share your mobile data connection with other devices, such as a TV, that can connect to the internet. However, this process typically requires the TV to support specific wireless connectivity options, such as Wi-Fi or Bluetooth, which enable it to establish a connection with the iPhone's hotspot.

In the absence of a mobile data option on your TV, the TV's connectivity capabilities might be limited to traditional methods, such as wired connections (e.g., Ethernet) or connecting to a Wi-Fi network.