Ishikawa Tsutsumu

Journalist specializing in the cellphone and smartphone market. Born in 1975. After graduating from Chūō University, worked as an editor at Nikkei Trendy before going freelance in 2003. Published works include Gūguru vs. Appuru kētai sekai taisen (The Global Cellphone Battle Between Google and Apple) and Mirai IT zukai: Kore kara no 5G bijinesu (The Future of IT, Illustrated: The 5G Business of Tomorrow).