Cell phone networks collapsedI was shocked by the Great East Japan Earthquake. These days I carry a Geiger counter wherever I go and I was surprised when I went to the Kansai area last week and the device registered double digits like I had seen in Tokyo. Radiation now spreads beyond Tohoku and Kanto to the west as well. One thing that I, as an operator of a cell phone business, was reminded from this earthquake and tsunami is that although cell phones are wireless, stations are wired with optical fiber cables, and when these are broken or power fails, cell phones do not work at all. When we lose electricity and the network is crippled, cell phones are completely out of service. SoftBank phones also lacked sufficient functioning for receiving earthquake early warnings, so I have decided to equip nearly every phone in ... ... [Read more]