Above 10,000 feet in the air, cell phone signal bounces off multiple towers and sends out a stronger signal. This is something that might congest the networks on the ground. But, there has never been a case of a cell phone causing a plane to crash. It interferes with the airplane and causes more work for the pilots during critical phases of flight. When they take off and when they land, those are phases of flight that require a high level of concentration by the pilots.
That's bcoz I signals from mobile phone will interfere with signals of aircraft magnetic compass and other aircraft instruments. Which wil give incorrect reading to pilot
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Yes, you need to turn off all the electronic devices as it may interrupt with the flights system, and can lead to hazardous uncertainties during your take offs and landing. But, you can use Bluetooth on a plane. Airplane mode, which disables cellular and Wi-Fi connections, does not necessarily disable Bluetooth functionality. While some airlines may restrict Bluetooth usage during takeoff and landing, many allow its use once the plane reaches cruising altitude. It's important to consult the specific policies of the airline you're traveling with to ensure compliance. Bluetooth headphones are commonly used on planes, providing a wire-free audio experience. Bluetooth operates on a frequency that minimizes the risk of interference with the aircraft's communication systems. As a result, airlines have deemed Bluetooth safe for use during flights.