Perhaps you’re already familiar to watching TV on your mobile phone? If you’re not as up-to-date yet, you better join, because the number of Mobile TV users has reached 20 million globally and will balloon to over two billion by 2013, according to Telecom Trends International.

A new report shows that the vast majority of users currently access free-to-air mobile TV, but pay-TV will catch on as high-quality made-for-TV programming becomes widely available on subscription-based channels.

Just as mobile voice is becoming the primary means of voice communication, mobile TV will eventually become the primary means of accessing television.

The momentum generated by mobile TV has surprised many industry observers. Despite the multiplicity of standards and lack of uniform frequency allocation, mobile TV is making a tremendous impact on the marketplace.

According to the report, the market is seeing the evolution of multi-network architecture with the same device supporting more than one standard. However, Digital Video Broadcasting - Handheld (DVB-H) has emerged as the de facto mobile TV standard globally.

The market is seeing the convergence of out-of-band broadcast and in-band multicast technologies into one seamless network architecture. Besides providing high-quality television reception, such architecture enables interactivity that will give a significant boost to mobile commerce.