According to Instat, the number of mobile television networks will grow to 13 in 2007 from nine in 2006. There would be more television networks but the biggest problem is the unavailability of spectrum, particularly in Europe. Another issue - surprise, surprise - is the lack of handsets that can handle wireless TV broadcasts. Over the next four years, Instat expects the number of mobile TV subscribers will grow to 125 million. That may seem like a bullish number but a research report by ABI Research last year said there would be 514 million mobile TV subscribers by 2011 compared with 6.4 million at the end of 2005.