When they tell you it’s ok to use small electronic devices and they turn on the plane’s wi-fi it’s ok to use Poly as a hotspot. It is limited to 10m. Your computer or tablet has much stronger radiation and you transmit when you stream, send e-mail, or surf. Wi-fi is not prohibited on US flights, at least according to the flight crew on the last flight. 6.5 hr flight test about to start—boarded. Will report.