Like I said in the other thread. If there was the slightest proof that cell phones could impact the safety of the airplane, every cell phone would be confiscated at security just like they do with scissors nowadays. The fact is that many people leave their cell phones on during each flight and the planes somehow manage to avoid collisions and stay in the sky.

However, since this is a Bluetooth thread, I will mention that there are three Bluetooth transmission schemes. The common scheme only goes a few meters. But Bluetooth transmitters can go up to (and perhaps beyond) 100 meters. And Bluetooth is a frequency hopper hopping 600 times per second through the 2.4 GHz range. It can and will interfere with other 2.4 GHz devices. But again, somehow the airplanes keep from crashing when Bluetooth devices are operating on airplanes.