The market for television and other media on mobile phones is poised for an explosion and could be a hot area for investment, advertising and media executives at the Reuters Advertising and Media Summit said. Wireless telephone operators around the world are all looking at providing services such as mobile TV, music downloads, and Web surfing to expand their revenue beyond conventional phone calls. In the United States operators such as Verizon Wireless, Vodafone, and Sprint Nextel are already providing video clips such as news and entertainment to cell phones.