which network subscriber supports Mobile TV feature for nokia X6 model?

I’m also thinking about the same, I have done proper research on it.

For kind information, your handset supports 3G & Video calls, unluckily it does not support high speed internet, so I would like to recommend you to improve to an HSPA handset that has video calling & supports at least 3.6Mbps to get 3G speeds.

So, it’s not possible to enjoy mobile TV on your Nokia X6, but I'll say that X6, as of now don't support mobile TV. If you want to watch a TV, consider getting an older phone like N73, N77, N92 and N93. They support mobile TV. I don't know why Nokia removed that on their phone market.

I hope this information will help you out.